PE4314
Document Category: Product Specification
UltraCMOS® RF Digital Step Attenuator, 1 MHz–2.5 GHz
©2015–2016, Peregrine Semiconductor Corporation. All rights reserved. • Headquarters: 9380 Carroll Park Drive, San Diego, CA, 92121
Product Specification DOC-81718-1 – (02/2017)
www.psemi.com
Features
• Attenuation step of 0.5 dB up to 31.5 dB
• Glitch-less attenuation state transitions
• Low distortion for CATV and multi-carrier applica-
tions
• Extended +105 °C operating temperature
• Parallel and Serial programming interfaces
• Packaging – 20-lead 4 × 4 × 0.85 mm QFN
Applications
• DOCSIS 3.1/0 customer premises equipment
(CPE) and infrastructure
• Satellite CPE and infrastructure
• Fiber CPE and infrastructure
Product Description
The PE4314 is a 75Ω HaRP™ technology-enhanced, 6-bit RF digital step attenuator (DSA) that supports a
frequency range from 1 MHz to 2.5 GHz. It features glitch-less attenuation state transitions and supports 1.8V
control voltage and an extended operating temperature range up to +105 °C, making this device ideal for
multiple wired broadband applications.
The PE4314 is a pin-compatible upgraded version of the PE4304, PE4307, PE4308 and PE43404. An
integrated digital control interface supports both Serial and Parallel programming of the attenuation, including
the capability to program an initial attenuation state at power up.
The PE4314 covers a 31.5 dB attenuation range in a 0.5 dB step. It is capable of maintaining 0.5 dB monoto-
nicity through 2.5 GHz. In addition, no external blocking capacitors are required if 0 VDC is present on the RF
ports.
The PE4314 is manufactured on Peregrine’s UltraCMOS® process, a patented variation of silicon-on-insulator
(SOI) technology on a sapphire substrate.
Figure 1 • PE4314 Functional Diagram
6-bit
RF
Input
RF
Output
Control Logic Interface
Switched Attenuator Array
Parallel
Control
3-bit
Serial
Control
2-bit
Power-up
Control
P/S V
SS_EXT
(optional)
PE4314
RF Digital Step Attenuator
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Peregrine’ s HaRP tech nology enhancements d eliver high linea rity and excellent ha rmonics performance. It is an
innovative feature of the UltraCMOS process, offering the performance of GaAs with the economy and
integration of conventional CMOS.
Optional External VSS
For proper operation, the V SS_EXT pin must be grounded or tied to the VSS voltage specified in Table 2. When the
VSS_EXT pin is grounded, FETs in the switch are biased with an internal negative voltage generator. For applica-
tions that require the lowest possible spur performance, VSS_EXT can be applied externally to bypass the internal
negative voltage generator.
Absolute Maximum Ratings
Exceeding absolute maximum ratings listed in Table 1 may cause permanent damage. Operation should be
restricted to the limits in Table 2. Operation between operating range maximum and absolute maximum for
extended periods may reduce reliability.
ESD Precautions
When handling this UltraCMOS device, observe the same precautions as with any other ESD-sensitive devices.
Although this device contains circuitry to protect it from damage due to ESD, precautions should be taken to
avoid exceeding the rating specified in Table 1.
Latch-up Immunity
Unlike conventional CMOS devices, UltraCMOS devices are immune to latch-up.
Table 1 • Absolute Maximum Ratings for PE4314
Parameter/Condition Min Max Unit
Supply voltage, VDD –0.3 5.5 V
Digital input voltage –0.3 3.6 V
RF input power, 75Ω
1–30 MHz
≥30 MHz–2.5 GHz See Fig. 5
+30 dBm
dBm
Storage temperature range –65 +150 °C
ESD voltage HBM(1), all pins 1500 V
ESD voltage CDM(2), all pins 1000 V
Notes:
1) Human body mo de l (MIL -STD 883 Me th od 30 15 ).
2) Charged device mo de l ( JEDE C JESD 22-C 10 1).
DOC-81718-1 – (02/2017) Page 3
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PE4314
RF Digital Step Attenuator
Recommended Operating Conditions
Table 2 lists the recommended operating conditions for the PE4314. Devices should not be ope rated outside the
recommended operating conditions listed below.
Table 2 • Recommended Operating Conditions for PE4314
Parameter Min Typ Max Unit
Normal mode, VSS_EXT = 0V(1)
Supply voltage, VDD 2.3 3.3 5.5 V
Supply current, IDD 130 200 µA
Bypass mode, VSS_EXT = –3.4V(2)
Supply voltage, VDD (Table 3 spec compliance applies for VDD ≥ 3.4V.) 2.7 3.4 5.5 V
Supply current, IDD 50 80 µA
Negative supply voltage, VSS_EXT –3.6 –3.2 V
Negative supply current, ISS –40 –16 µA
Normal or bypass mode
Digital input high 1.17 3.6 V
Digital input low –0.3 0.6 V
Digital input current(3) 20 µA
RF input power, CW(4)
1–30 MHz
≥30 MHz–2.5 GHz Fig. 5
+24 dBm
dBm
RF input power, pulsed(5)
1–30 MHz
≥30 MHz–2.5 GHz Fig. 5
+27 dBm
dBm
Operating temperature range –40 +25 +105 °C
Notes:
1) Normal mode: con nect V SS_EXT (pin 12) to GN D (V SS_EXT = 0V ) to en ab le in tern al n eg ative voltag e g en er ator.
2) Bypass mode: use VSS_EXT (pin 12) to bypass and disable inte rnal negat ive voltage ge nera tor.
3) Applies to all pins except pins 1, 5, 7 and 20. Pins 1, 7 and 20 have an internal 1 MΩ pull-down resistor to ground and pin 5 has an internal 2 MΩ
pull-up resistor to in te rn al V DD.
4) 100% duty cycle, all bands, 75Ω.
5) Pulsed, 5% duty cycle of 4620 µs period, 75Ω.
PE4314
RF Digital Step Attenuator
Page 4 DOC-81718-1 – (02/2017)
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Electrical Specifications
Table 3 provides the PE4314 key electrical specifications @ +25 °C, ZS = ZL = 75Ω, unless otherwise specified.
Normal mode(1) is @ VDD = 3.3V and VSS_EXT = 0V. Bypass mode(2) is @ VDD = 3.4V and VSS_EXT = –3.4V.
Table 3 • PE4314 Electrical Specifications
Parameter Condition Frequency Min Typ Max Unit
Operating frequency 1 MHz 2.5 GHz As
shown
Attenuation range 0.5 dB step 0–31.5 dB
Insertion loss Reference state
1–204 MHz
204–870 MHz
870–1218 MHz
1218–2500 MHz
1.0
1.2
1.3
1.5
1.25
1.50
1.80
1.90
dB
dB
dB
dB
Attenuation error Any bit or bit combination
1–204 MHz
204–1218 MHz
1218–1794 MHz
1794–2500 MHz
See Fig. 13–
Fig. 17
±(0.15 + 2% of
attenuation setting)
±(0.15 + 3% of
attenuation setting)
±(0.15 + 4% of
attenuation setting)
± (0.15 + 8% of
attenuation setting)
dB
dB
dB
dB
Return loss Input and output ports, refer-
ence state
1–204 MHz
204–870 MHz
870–1794 MHz
1794–2500 MHz
19
17
16
19
dB
dB
dB
dB
Relative phase All states 870 MHz
1000 MHz
1218 MHz
9
11
14
deg
deg
deg
Input 0.1dB compression
point(3) 30–2500 MHz 30 dBm
Input IP2
Two tones at +15 dBm
10 kHz spacing
0 dB and 31.5 dB attenua-
tion states
5 MHz
10 MHz
17 MHz
35 MHz
500 MHz
1000 MHz
1900 MHz
2500 MHz
0 dB 31.5 dB
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
70
76
80
88
104
106
98
110
100
101
104
105
110
113
102
99
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PE4314
RF Digital Step Attenuator
Input IP3
Two tones at +15 dBm
10 kHz spacing
0 dB and 31.5 dB attenua-
tion states
5 MHz
10 MHz
17 MHz
35 MHz
500 MHz
1000 MHz
1900 MHz
2500 MHz
0 dB 31.5 dB
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
57
69
63
62
62
59
60
58
62
61
62
61
62
55
55
57
Video feed-through DC measurement 7 mVPP
Settling time 50% CTRL to 0.05 dB of
final value 1.8 µs
Settling time 50% CTRL to 0.5 dB of final
value 0.4 µs
Switching time 50% CTRL to 90% or 10%
RF 370 700 ns
Attenuation transient
(envelope) 250 MHz 0.5 dB
Notes:
1) Normal mode: con nect V SS_EXT (pin 12) to GN D (V SS_EXT = 0V ) to en ab le in tern al n eg ative voltag e g en er ator.
2) Bypass mode: use VSS_EXT (pin 12) to bypass and disable inte rnal negat ive voltage ge nera tor.
3) The input 0.1 dB com pression point is a lin earity figu r e of mer it. R efer to Table 2 for the operating RF input power (75Ω).
Table 3 • PE4314 Electrical Specifications (Cont.)
Parameter Condition Frequency Min Typ Max Unit
PE4314
RF Digital Step Attenuator
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Switching Frequency
The PE4314 has a maximum 25 kHz switching
frequency in normal mode (pin 12 tied to ground). A
faster switching frequency is available in bypass
mode (pin 12 tied to VSS_EXT). The rate at which the
PE4314 can be switched is then limited to the
switching time as specified in Table 3.
Switching frequency is defined to be the speed at
which the DSA can be toggled across attenuation
states. Switching time is the time duration between
the point the control signal reached 50% of the final
value and the point the output signal reaches within
10% or 90% of its target value.
Spur-Free Performance
The typical spurious performance of the PE4314 in
normal mode is –158 dBm/Hz (pin 12 tied to ground).
The spur fundamental occurs around 2.6 MHz and it
has a bandwidth of 100 kHz. This results in a CATV
band typical spurious level for frequencies above
5 MHz of –154 dBm. If spur-free performance is
desired, the internal negative voltage generator can
be disabled by applying a negative voltage to VSS_EXT
(pin 12).
Glitch-less Attenuation State Transitions
The PE4314 features a novel architecture to provide
the best-in-class glitch-less transition behavior when
changing attenuation states. When RF input power is
applied, the output power spikes are greatly reduced
(0.5 dB) during attenuation state changes when
comparing to previous generations of DSAs.
Thermal Data
Psi-JT (JT), junction top-of-package, is a thermal
metric to estimate junction temperature of a device on
the customer application PCB (JEDEC JESD51-2).
JT = (TJ – TT)/P
where
JT = junction-to-top of package characterization
parameter, °C/W
TJ = die junction temperature, °C
TT = package temperature (top surface, in the
center), °C
P = power dissipated by device, Watts
Truth Tables
Table 5 and Table 6 provide the truth tables for the
PE4314.
Table 4 • Thermal Data for PE4314
Parameter Typ Unit
Maximum junction temperature, TJMAX
(RF input power , CW = 24 dBm, +105 °C ambient) 124 °C
JT 25 °C/W
θJA, junction-to-ambient thermal resistance 74 °C/W
Table 5 • Parallel Truth Table for PE4314(*)
P/S C16 C8 C4 C2 C1 C0.5 Attenuation
Setting
RF1–RF2
0000000Reference IL
0000001 0.5 dB
0000010 1 dB
0000100 2 dB
0001000 4 dB
0010000 8 dB
0100000 16 dB
0111111 31.5 dB
Note: * Not all 64 possible combinations of C0.5–C16 are shown.
Table 6 • Parallel Power-up Truth Table for PE4314(*)
P/S LE PUP1 PUP2 Attenuation Setting
RF1–RF2
0000 Reference IL
0001 8 dB
0010 16 dB
0011 31.5 dB
0 1 X X Defined by C0.5–C16
Note: * Power up with LE = 1 provides normal parallel operation with
C0.5–C16, and PUP1 and PUP2 are not active.
DOC-81718-1 – (02/2017) Page 7
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PE4314
RF Digital Step Attenuator
Programming Options
Parallel/Serial Selection
Either a Parallel or Serial interface can be used to
control the PE4314. The P/S bit pr ovides thi s
selection, with P/S = LOW selecting the Parallel
interface and P/S = HIGH selecting the Serial
interface.
Parallel Mode Interface
The Parallel interface consists of six CMOS-
compatible control lines that select the desired attenu-
ation state, as shown in Table 5.
The Parallel interface timing requirements are defined
by Figure 3, Table 8 and switching time in Table 3.
For Latched Parallel programming, the latched enable
(LE) should be held LOW while changing attenuation
state control values, then pulsed LE HIGH to LOW
(per Figure 3) to latch new attenuation state into the
device.
For Direct Parallel programming, the LE line should
be pulled HIGH. Changing attenuation state control
values will change device state to new attenuation.
Direct mode is ideal for manual control of the device
(using hardwire, switches or jumpers).
In Parallel mode, DATA and CLOCK (CLK) pins are
“don’t care” and may be tied to logic LOW or logic
HIGH.
Serial Interface
The Serial interface is a 6-bit Serial-in, Parallel-out
shift register buffered by a transparent latch. It is
controlled by using three CMOS-compatible signals:
DATA, CLK and LE. The DATA and CLK inputs allow
data to be serially entered into the shift register, a
process that is independent of the state of the LE
input. Serial data is clocked in MSB first.
The LE input controls th e latch. When LE is HIGH, the
latch is transparent and the contents of the Serial shift
register control the attenuator. When LE is brought
LOW, data in the shift register is latched.
The shift register must be loaded while LE is held
LOW to prevent the attenuator value from changing
as data is entered. The LE input should then be
toggled HIGH and brought LOW again, latching the
new data into the DSA. The Serial timing for the
operation is defined by Figure 2 and Table 7.
Power-up Control Settings
The PE4314 always assumes a specifiable attenu-
ation setting on power up. This feature exists for both
the Serial and Parallel modes of operatio n, and allows
a known attenuation state to be established before an
initial Serial or Parallel control word is provided.
When the attenuator powers up in Serial mode
(P/S = 1), the six control bits are set to whatever data
is present on the six Parallel data inputs (C0.5–C16).
This allows any one of the 64 attenuation settings to
be specified as the power-up state.
When the attenuator powers up in Parallel mode
(P/S = 0) with LE = 0, the control bits are automati-
cally set to one of four possible values. These four
values are selected by the two power-up (PUP)
control bits, PUP1 and PUP2, as shown in Table 6.
Figure 2 • Serial Interface Timing Diagram
Figure 3 • Parallel Interface Timing Diagram
tSDHLD
tLESUP
tLEPW
tSDSUP
LE
Clock
Data MSB LSB
t
PDSUP
t
PDHLD
t
LEPW
LE
Parallel Data
C16:C0.5
PE4314
RF Digital Step Attenuator
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Serial Register Map
Figure 4 provides the Serial programming register map for the PE4314.
Figure 4 • Serial Register Map(*)
Note: * For backward compatibility, the same programming scheme
can be used.
LSB (last in) MSB (first in)
B5 B4 B3 B2 B1 B0
C16 C8 C4 C2 C1 C0.5
Table 7 • Serial Interface AC Characteristics(1)
Parameter Min Max Unit
Serial data clock frequency, fCLK(2) 10 MHz
Serial clock HIGH time, tCLKH 30 ns
Serial clock LOW time, tCLKL 30 ns
LE set-up time after last clock rising edge, tLESUP 10 ns
LE minimum pulse width, tLEPW 30 ns
Serial data set-up time before clock rising edge, tSDSUP 10 ns
Serial data hold time after clock rising edge, tSDHLD 10 ns
Notes:
1) VDD = 3.3V or 5.0V, –40 °C < TA < +105 ° C, u nless other wise sp ecifie d.
2) fCLK is verified during t he fu nctio na l pa tt ern test . S erial p r ogra mmin g se ctions o f t he funct iona l p att ern ar e clocked a t 1 0 MHz to verify fCLK
specification.
Table 8 • Parallel Interface AC Characteristics(*)
Parameter Min Max Unit
LE minimum pulse width, tLEPW 10 ns
Data set-up time before rising edge of LE, tPDSUP 10 ns
Data hold time after falling edge of LE, tPDHLD 10 ns
Note: * VDD = 3.3V or 5.0V, –40 °C < TA < +105 °C, unless otherwise specified.
DOC-81718-1 – (02/2017) Page 9
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PE4314
RF Digital Step Attenuator
Figure 5 • Power De-rating Curve, 1 MHz–2.5 GHz, –40 to +105 °C Ambient, 75Ω
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
1.0 10.0 100.0 1000.0
Input Power (dBm)
Frequency (MHz)
P0.1 dB Compression (≥ 30 MHz) Pulsed (≥ 30 MHz)
CW & Pulsed (< 30 MHz) CW (≥ 30 MHz)
PE4314
RF Digital Step Attenuator
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Typical Performance Data
Figure 6–Figure 27 show the typical performance data at +25 °C, VDD = 3.3V, ZS = ZL = 75Ω, u nless ot herwise
specified.
Figure 6 • Insertion Loss vs Temperature
-6
-5
-4
-3
-2
-1
0
0 0.5 1 1.5 2 2.5 3
Insertion Loss (dB)
Frequency (GHz)
-40°C +25°C +85°C +105°C
DOC-81718-1 – (02/2017) Page 11
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PE4314
RF Digital Step Attenuator
Figure 7 • Input Return Loss vs Attenuation Setting
-60
-50
-40
-30
-20
-10
0
00.511.522.53
Return Loss (dB)
Frequency (GHz)
0 dB 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB
Figure 8 • Output Return Loss vs Attenuation Setting
-70
-60
-50
-40
-30
-20
-10
0
00.511.522.53
Return Loss (dB)
Frequency (GHz)
0 dB 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB
PE4314
RF Digital Step Attenuator
Page 12 DOC-81718-1 – (02/2017)
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Figure 9 • Input Return Loss for 16 dB Attenuation Setting vs Temperature
Figure 10 • Output Return Loss for 16 dB Attenuation Setting vs Temperature
DOC-81718-1 – (02/2017) Page 13
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PE4314
RF Digital Step Attenuator
Figure 11 • Relative Phase Error vs Attenuation Setting
-10
-5
0
5
10
15
20
25
30
0 0.5 1 1.5 2 2.5
Relative Phase Error (deg)
Frequency (GHz)
0 dB 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB
Figure 12 • Relative Phase Error for 31.5 dB Attenuation Setting vs Frequency
0
2
4
6
8
10
12
14
16
18
-40 25 85 105
Relative Phase Error (deg)
Temperature (°C)
0.2 GHz 0.9 GHz 1.8 GHz 2.5 GHz
PE4314
RF Digital Step Attenuator
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Figure 13 • Attenuation Error @ 200 MHz vs Temperature(*)
Note: * Attenuation error limit @ ±(0.15 + 2% of attenuation setting).
Figure 14 • Attenuation Error @870 MHz vs Temperature(*)
Note: * Attenuation error limit @ ±(0.15 + 3% of attenuation setting).
DOC-81718-1 – (02/2017) Page 15
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PE4314
RF Digital Step Attenuator
Figure 15 • Attenuation Error @ 1218 MHz vs Temperature(*)
Note: * Attenuation error limit @ ±(0.15 + 3% of attenuation setting).
-1.5
-1
-0.5
0
0.5
1
1.5
0 4 8 121620242832
Attenuation Error (dB)
Attenuation Setting (dB)
-40°C +25°C +85°C +105°C
Upper Atten. Error Limit Lower Atten. Error Limit
Figure 16 • Attenuation Error @ 1790 MHz vs Temperature(*)
Note: * Attenuation error limit @ ±(0.15 + 4% of attenuation setting).
-1.5
-1
-0.5
0
0.5
1
1.5
0 4 8 121620242832
Attenu ation Error (dB)
Attenuation Setting (dB)
-40°C +25°C +85°C +105°C
Upper Atten. Error Limit Lower Atten. Error Limit
PE4314
RF Digital Step Attenuator
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Figure 17 • Attenuation Error @ 2500 MHz vs Temperature(*)
Note: * Attenuation error limit @ ±(0.15 + 8% of attenuation setting).
Figure 18 • IIP3 vs Attenuation Setting (Low Frequencies)
55.00
60.00
65.00
70.00
75.00
5101735
Input IP3 (dBm)
Frequency (MHz)
0 dB 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB
DOC-81718-1 – (02/2017) Page 17
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PE4314
RF Digital Step Attenuator
Figure 19 • IIP3 vs Attenuation Setting (High Frequencies)
50.00
55.00
60.00
65.00
70.00
500 1000 1900 2500
Input IP3 (dBm)
Frequency (MHz)
0 dB 0.5 dB 1 dB 2 dB 3.5 dB 31.5 dB
Figure 20 • IIP2 vs Attenuation Setting (Low Frequencies)
65.00
70.00
75.00
80.00
85.00
90.00
95.00
100.00
105.00
110.00
5101735
Input IP2 (dBm)
Frequency (MHz)
0 dB 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB
PE4314
RF Digital Step Attenuator
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Figure 21 • IIP2 vs Attenuation Setting (High Frequencies)
Figure 22 • 0.5 dB Step Error vs Frequency(*)
Note: * Monotonicity is held so long as step error does not cross below –0.5 dB.
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PE4314
RF Digital Step Attenuator
Figure 23 • 0.5 dB Step, Actual vs Frequency
0
4
8
12
16
20
24
28
32
0 4 8 121620242832
Actual Attenuation (dB)
Ideal Attenuation (dB)
200 MHz 870 MHz 1218 MHz 1790 MHz 2500 MHz
Figure 24 • 0.5 dB Major State Bit Error vs Attenuation Setting
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
00.511.522.5
Attenuation Error (dB)
Frequency (GHz)
0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB
PE4314
RF Digital Step Attenuator
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Figure 25 • 0.5 dB Attenuation Error vs Frequency
Figure 26 • Attenuation Transient (15.5–16 dB), Typical Switching Time = 370 ns
-14
-13.6
-13.2
-12.8
-12.4
-12
0 100020003000400050006000700080009000
Envelop e Power (dBm)
Time (ns)
Power (dBm)
Trigger
starts ~
4230 ns
Glitch =
0.28 dB
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PE4314
RF Digital Step Attenuator
Figure 27 • Attenuation Transient (16–15.5 dB), Typical Switching Time = 370 ns
-14
-13.6
-13.2
-12.8
-12.4
-12
0 1000 2000 3000 4000 5000 6000 7000 8000 9000
Envelop e Power (dBm)
Time (ns)
Power (dBm)
Trigger
starts ~
4230 ns
Glitch =
0.05 dB
PE4314
RF Digital Step Attenuator
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Evaluation Kit
The digital step attenuator evaluation board (EVB)
was designed to ease customer evaluation of the
PE4314 digital step attenuator. The PE4314 EVB
supports Direct Parallel, Latched Parallel and Serial
modes.
Evaluation Kit Setup
Connect the EVB with the USB d ongle board and USB
cable as shown in Figure 28.
Direct Parallel Programming Procedure
Direct Parallel programming is suitable for manual
operation without software programming. For manual
Direct Parallel programming, position the Parallel/
Serial (P/S) select switch to the Parallel position. The
LE switch must be switched to HIGH position.
Switches D1–D6 are SP3T switches that enable the
user to ma nually pr ogram the par allel bi ts. When D1 –
D6 are toggled to the HIGH position, logic high is
presented to the parallel input. When toggled to the
LOW position, logic low is presented to the parallel
input. Setting LE and D1–D6 to the EXTERNAL
position presents as OPEN, which is set for software
programming of Latched Parallel and Serial modes.
Table 5 depicts the Parallel truth table.
Latched Parallel Programming Procedure
For automated Latched Parallel programming,
connect the USB dongle board and cable that is
provided with the evaluation kit (EVK) from the USB
port of the PC to the J1 header of the PE4314 EVB,
and set the LE and D1–D6 SP3T switches to the
EXTERNAL position. Position the Parallel/Serial (P/S)
select switch to the Parallel position. The evaluation
software is written to operate the DSA in Parallel
mode. Ensure that the software GUI is set to Latched
Parallel mode. Use the software GUI to enable the
desired attenuation state. The software GUI automati-
cally programs the DSA each time an attenuation
state is enabled.
Serial Programming Procedure
For automated Serial programming, connect the USB
dongle board and cable that is provided with the EVK
from the USB port of the PC to the J1 header of the
PE4314 EVB, and set the LE and D1–D6 SP3T
switches to the EXTERNAL position. Position the
Parallel/Serial (P/S) select switch to the Serial
position. The software GUI is written to operate the
DSA in Serial mode. Use the software GUI to enable
each setting to the desired attenuation state. The
software GUI automatically programs the DSA each
time an attenuation state is enabled.
Figure 28 • Evaluation Kit for PE4314
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PE4314
RF Digital Step Attenuator
Figure 29 • Evaluation Kit Layout for PE4314
PE4314
RF Digital Step Attenuator
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Pin Information
This section provides pinout information for the
PE4314. Figure 30 shows the pin map of this device
for the available package. Table 9 provides a
description for each pin.
Figure 30 • Pin Configuration (Top View)
Exposed
Ground Pad
C16
RF1
DATA
CLK
LE
C8
RF2
P/S
VSS_EXT
GND
C0.5
C1
GND
C2
C4
VDD
PUP1
PUP2
VDD
GND
1
3
2
4
5
15
13
14
12
11
6
7
8
9
10
20
19
18
17
16
Pin 1 Dot
Marking
Table 9 • Pin Descriptions for PE4314
Pin No. Pin
Name Description
1C16(1)(2) Parallel control bit, 16 dB
2RF1(3) RF1 port
3 DATA Serial interface data in put
4 CLK Serial interface clock input
5LE(4) Serial interface latch enable input
6, 9 VDD Supply voltage
7PUP1(1)(2) Power-up control bit, MSB
8PUP2(1) Power-up control bit, LSB
10, 11, 18 GND Ground
12 VSS_EXT(5) External VSS negative control voltage
13 P/S Parallel/Serial mode select
14 RF2(3) RF2 port
15 C8(1) Parallel control bit, 8 dB
16 C4(1) Parallel control bit, 4 dB
17 C2(1) Parallel control bit, 2 dB
19 C1(1) Parallel control bit, 1 dB
20 C0.5(1)(2) Parallel control bit, 0.5 dB
Pad GND Expo sed pad: ground for proper oper-
ation
Notes:
1) Ground PUP1, PUP2, C0. 5, C1, C 2, C 4, C8 and C1 6 if no t in use .
2) C0.5, C16 and PUP1 have an int erna l 1 MΩ pull-down resisto r to
ground.
3) RF pins 2 and 14 must be at 0 VDC. The RF pins do not require
DC blocking ca pa citors for p r ope r op er at ion if the 0 VD C re qu ire -
ment is met.
4) LE (pin 5) has an int erna l 2 M Ω pull-up resist or t o in tern al VDD.
5) Use VSS_EXT (pin 1 2) t o b ypa ss an d disabl e inte rnal neg at ive
voltage generator . Connect VSS_EXT (pin 12) to GND (VSS_EXT =
0V) to enab le in te rn al neg at ive vo ltage ge ner a tor.
DOC-81718-1 – (02/2017) Page 25
www.psemi.com
PE4314
RF Digital Step Attenuator
Packaging Information
This section provides packaging data including the moisture sensitivity level, package drawing, package
marking and tape-and-reel information.
Moisture Sensitivity Level
The moisture sensitivity level rating for the PE4314 in the 20-lead 4 × 4 × 0.85 mm QFN package is MSL1.
Package Drawing
Top-Marking Specification
Figure 31 • Package Mechanical Drawing for 20-lead 4 × 4 × 0.85 mm QFN
Figure 32 • Package Marking Specifications for PE4314
TOP VIEW BOTTOM VIEW
SIDE VIEW
4.00
4.00
0.85±0.05
Pin #1 Corner
RECOMMENDED LAND PATTERN
0.50
2.15±0.05
0.55±0.05
(x20)
2.15±0.05
0.18
0.435 SQ
REF
0.28
(x20)
0.75
(x20)
0.50
4.40
4.40
2.20
2.20
A
0.10 C
(2X)
C
0.10 C
0.05 C
SEATING PLANE
B
0.10 C
(2X)
0.10 CA B
0.05 C
ALL FEATURES
0.05
0.203
0.23±0.05
(x20)
2.00
0.18
1
5
6
10
11 15
16
20
=
YY =
WW =
ZZZZZZ =
Pin 1 indicator
Last two digits of assembly year
Assembly work week
Assembly lot code (maximum six characters)
4314
YYWW
ZZZZZZ
PE4314
RF Digital Step Attenuator
Page 26 DOC-81718-1 – (02/2017)
www.psemi.com
Tape and Reel Specification
Figure 33 • Tape and Reel Specifications for 20-lead 4 × 4 × 0.85 mm QFN
Device Orientation in Tape
Pin 1
T
K0 A0
B0
P0
P1
D1
A
Section A-A
A
Direction of Feed
D0
E
W0
P2
see note 3
see
note 1
F
see note 3
A0
B0
K0
D0
D1
E
F
P0
P1
P2
T
W0
4.35
4.35
1.10
1.50 + 0.10/ -0.00
1.50 min
1.75 ± 0.10
5.50 ± 0.05
4.00
8.00
2.00 ± 0.05
0.30 ± 0.05
12.00 ± 0.30
Notes:
1. 10 Sprocket hole pitch cumulative tolerance ±0.2
2. Camber in compliance with EIA 481
3. Pocket position relative to sprocket hole measured
as true position of pocket, not pocket hole
PE4314 RF Digital Step Attenuator
Product Specification www.psemi.com DOC-81718-1 – (02/2017)
Document Categories
Advance Information
The product is in a formative or design stage. The datasheet contains design target specifications for product development. Specifications and
features may change in any manner without notice.
Preliminary Specification
The datasheet contains preliminary data. Additional data may be added at a later date. Peregrine reserves the right to change specifications at any
time without notice in order to supply the best possible product.
Product Specification
The datasheet contains final data. In the event Peregrine decides to change the specifications, Peregrine will notify customers of the intended
changes by issuing a CNF (Customer Notification Form).
Sales Contact
For additional information, contact Sales at sales@psemi.com.
Disclaimers
The information in this document is believed to be reliable. However, Peregrine assumes no liability for the use of this information. Use shall be
entirely at the user’s own risk. No patent rights or licenses to any circuits described in this document are implied or granted to any third party.
Peregrine’s products are not designed or intended for use in devices or systems intended for surgical implant, or in other applications intended to
support or sustain life, or in any application in which the failure of the Peregrine product could create a situation in which personal injury or death
might occur. Peregrine assumes no liability for damages, including consequential or incidental damages, arising out of the use of its products in
such applications.
Patent Statement
Peregrine products are protected under one or more of the following U.S. patents: patents.psemi.com
Copyright and Trademark
©2015–2016, Peregrine Semiconductor Corporation. All rights reserved. The Peregrine name, logo, UTSi and UltraCMOS are registered trade-
marks and HaRP, MultiSwitch and DuNE are trademarks of Peregrine Semiconductor Corp.
Ordering Information
Table 10 lists the available ordering codes for the PE4314 as well as available shipping methods.
Table 10 • Order Codes for PE4314
Order Codes Description Packaging Shipping Method
PE4314B–Z PE4314 digital step attenuator Green 20-lead 4 × 4 mm QFN 3000 Units/T&R
EK4314–02 PE4314 evaluation kit Evaluation kit 1/Box