THIS PAGE INTENTIONALLY LEFT BLANK
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
1
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
Functional Diagram
Typical Applications Features
General Description
The HMC708LP5(E) is ideal for:
• Cellular Infrastructure
• WiBro, WiMAX and LTE/ 4G
• Microwave Radio & VSAT
• Test Equipment and Sensors
-2.5 to +29 dB Gain Control in 0.5 dB Steps
Power-up State Selection
High Output IP3: +37 dBm
Low Noise Figure: 1 dB
TTL/CMOS Compatible
Serial, Parallel, or Latched Parallel Control
±0.25 dB Typical Step Error
Single +3V and +5V Supply
32 Lead 5x5mm SMT Package: 25mm2
The HMC708LP5(E) is a digitally controlled variable
gain ampliî› er which operates from 1700 MHz and
2200 GHz, and can be programmed to provide
between 2.5 dB attenuation and +29 dB of gain, in
0.5 dB steps. The HMC708LP5(E) delivers noise
î› gure of 1 dB in its maximum gain state, with output
IP3 of up to +37 dBm. The dual mode gain control
interface accepts either three wire serial input or
6 bit parallel word. The HMC708LP5(E) also features
a user selectable power up state and a serial
output for cascading other Hittite serially controlled
components. For 900 MHz applications please refer
to the HMC707LP5(E) data sheet.
Electrical Specications, TA = +25° C
Rbias = 270 Ohms for Vdd = +5V, Rbias = 10 kOhms for Vdd = +3V, Vdd = Vdd1 = Vdd2 = Vdd3
Parameter Min. Typ. Max. Min. Typ. Max. Units
Vdd = +3V Vdd = +5V
Frequency Range 1.7 - 2.2 1.7 - 2.2 GHz
Gain (Maximum Gain State) 23 27 25 30 dB
Gain Control Range 31.5 31.5 dB
Input Return Loss 16.5 20.5 dB
Output Return Loss 10.5 13.5 dB
Attenuation Accuracy: (Referenced to Maximum Gain State) ±(0.2 + 5%) of Attenuation Setting ±(0.2 + 5%) of Attenuation Setting dB
Output Power for 1 dB Compression 13 16 18 21.5 dBm
Output Third Order Intercept Point
(Two-Tone Input Power= -10 dBm Each Tone) 32.5 37. 5 dBm
Noise Figure 1.1 1dB
Switching Characteristics
tRISE, tFALL (50% CTL to 90% RF)
tRISE
tFALL
-
-
140
270
ns
ns
Current Ampliî› er 1 30 47 65 80 97 135 mA
Current Ampliî› er 2 130 155 190 130 155 190 mA
[1] Two-tone output power @ -10 dBm [2] Two-tone output power @ -5 dBm
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
2
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
20
24
28
32
36
40
1.5 1.7 1.9 2.1 2.3 2.5
+25C
+85C
-40C
FREQUENCY (GHz)
GAIN (dB)
Vdd=5V
Vdd=3V
-40
-30
-20
-10
0
1.5 1.7 1.9 2.1 2.3 2.5
Vdd=3V
Vdd=5V
FREQUENCY (GHz)
RETURN LOSS (dB)
24
28
32
36
40
44
48
1.7 1.8 1.9 2 2.1 2.2
Pout=-15dBm
Pout=-10dBm
Pout= -5dBm
Pout= 0dBm
FREQUENCY (GHz)
IP3 (dBm)
Vdd=5V
Vdd=3V
-20
-15
-10
-5
0
1.5 1.7 1.9 2.1 2.3 2.5
Vdd=3V
Vdd=5V
FREQUENCY (GHz)
RETURN LOSS (dB)
-35
-30
-25
-20
-15
-10
-5
0
1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5
Vdd=3V
Vdd=5V
FREQUENCY (GHz)
NORMALIZED ATTENUATION (dB)
Output IP3 vs. Tone Power [1]
Normalized Attenuation
(Only Major States are Shown)
Maximum Gain vs. Frequency [1]
Input Return Loss
(Only Major States are Shown)
Output IP3 vs. Attenuation @ 1900 MHz
Output Return Loss
(Only Major States are Shown)
0
10
20
30
40
0 4 8 12 16 20 24 28 32
Vdd=3V
Vdd=5V
ATTENUATION STATE (dB)
IP3 (dBm)
Power Out = -10dBm
[1] Maximum gain state with digital attenuator set to minimum attenuation
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
3
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
-30
-20
-10
0
10
20
30
1.5 1.7 1.9 2.1 2.3 2.5
Vdd=3V
Vdd=5V
FREQUENCY (GHz)
RELATIVE PHASE (deg)
Normal Relative Phase vs. Frequency
(Only Major States are Shown)
Bit Error vs. Frequency @ +3V
(Only Major States are Shown)
Bit Error vs. Frequency @ +5V
(Only Major States are Shown)
Bit Error vs. Attenuation State @ +3V Bit Error vs. Attenuation State @ +5V
-2
-1
0
1
2
1.5 1.7 1.9 2.1 2.3 2.5
FREQUENCY (GHz)
BIT ERROR (dB)
Vdd = 3V
-2
-1
0
1
2
1.5 1.7 1.9 2.1 2.3 2.5
FREQUENCY (GHz)
BIT ERROR (dB)
Vdd = 5V
-1
-0.5
0
0.5
1
1.5
2
0 4 8 12 16 20 24 28 32
ATTENUATION STATE (dB)
BIT ERROR (dB)
Vdd=3V (1.7, 1.8, 1.9, 2.0, 2.1, 2.2) GHz
-1
-0.5
0
0.5
1
1.5
2
0 4 8 12 16 20 24 28 32
ATTENUATION STATE (dB)
BIT ERROR (dB)
Vdd=5V (1.7, 1.8, 1.9, 2.0, 2.1, 2.2) GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
4
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
0
4
8
12
16
20
0 4 8 12 16 20 24 28 32
Vdd=3V
Vdd=5V
ATTENUATION (dBm)
NOISE FIGURE (dB)
0
0.4
0.8
1.2
1.6
2
1.5 1.7 1.9 2.1 2.3 2.5
Vdd=3V
Vdd=5V
FREQUENCY (GHz)
NOISE FIGURE (dB)
Noise Figure vs. Frequency Noise Figure vs. Attenuation @ 1900 MHz
Step Error vs. Frequency @ +3V
(Only Major States are Shown)
Step Error vs. Frequency @ +5V
(Only Major States are Shown)
-2
-1
0
1
2
1.5 1.7 1.9 2.1 2.3 2.5
FREQUENCY (GHz)
STEP ERROR (dB)
Vdd = 3V
-2
-1
0
1
2
1.5 1.7 1.9 2.1 2.3 2.5
FREQUENCY (GHz)
STEP ERROR (dB)
Vdd = 5V
5
15
25
35
45
100
200
300
400
500
1 10 100 1000 10000
Vdd=3V
Vdd=5V
IP3 (dBm)
DC CURRENT (mA)
Rbias (Ohms)
28
32
36
40
44
100
150
200
250
300
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
IP3 @1.9GHz
Idd
IP3 (dBm)
Idd (mA)
VOLTAGE SUPPLY (V)
Output IP3 & Supply Current vs.
Rbias @ 1900 MHz
Output IP3 & Supply Current vs.
Supply Voltage @ 1900 MHz
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
5
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
-30
-20
-10
0
10
20
30
1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5
Vdd=3V
Vdd=5V
FREQUENCY (GHz)
RESPONSE (dB)
S11
S21
S22
0
0.4
0.8
1.2
1.6
2
1.5 1.7 1.9 2.1 2.3 2.5
Vdd=3V
Vdd=5V
FREQUENCY (GHz)
NOISE FIGURE (dB)
-20
-10
0
10
20
30
0 4 8 12 16 20 24 28 32
Vdd=3V
Vdd=5V
ATTENUATION STATE (dB)
IP3 (dBm)
Power Out = -20dBm
[1] See Application Circuit [2] Maximum gain state with digital attenuator set to minimum attenuation
Gain & Return Loss [1] [2]
Output IP3 vs. Attenuation @ 1900 MHz [1]
Noise Figure vs. Frequency [1] [2]
Option 1 [1] : Amp1 + 6-Bit DAT only
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
6
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
Serial Control Interface
20
24
28
32
36
40
44
0 4 8 12 16 20 24 28 32
Vdd=3V
Vdd=5V
ATTENUATION STATE (dB)
IP3 (dBm)
Pout=-5dBm
Pout=0dBm
Setup limit
Gain & Return Loss [1] [2] Output IP3 vs. Attenuation @ 1900 MHz [1]
-20
-15
-10
-5
0
5
10
15
20
1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5
Vdd=3V
Vdd=5V
FREQUENCY (GHz)
RESPONSE (dB)
S22
S21
S11
The HMC708LP5(E) contains a 3-wire SPI compatible digital interface (SERIN, CLK, LE). It is activated when P/S
is kept high. The 6-bit serial word must be loaded MSB î› rst. The positive-edge sensitive CLK and LE requires
clean transitions. Standard logic families work well. If mechanical switches were used, sufficient debouncing should
be provided. When LE is high, 6-bit data in the serial input register is transferred to the attenuator. When LE is high
CLK is masked to prevent data transition during output loading.
When P/S is low, 3-wire SPI interface inputs (SERIN, CLK, LE) are disabled and serial input register is loaded
asynchronously with parallel digital inputs (D0-D5). When LE is high, 6-bit parallel data is transferred to the attenuator.
For all modes of operations, attenuation state will stay constant while LE is kept low.
[1] See Application Circuit [2] Maximum gain state with digital attenuator set to minimum attenuation
Option 2 [1] : 6-Bit DAT + Amp2 only
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
7
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
PUP Truth Table
Parameter Typ.
Min. serial period, tSCK 100 ns
Control set-up time, tCS 20 ns
Control hold-time, tCH 20 ns
LE setup-time, tLN 10 ns
Min. LE pulse width, tLEW 10 ns
Min LE pulse spacing, tLES 630 ns
Serial clock hold-time from LE, tCKN 10 ns
Hold Time, tPH. 0 ns
Latch Enable Minimum Width, tLEN 10 ns
Setup Time, tPS 2 ns
Truth Table
Parallel Mode (Direct Parallel Mode & Latched Parallel Mode)
Note: The parallel mode is enabled when P/S is set to low.
Direct Parallel Mode - The attenuation state is changed by the Control Voltage Inputs directly. The LE (Latch Enable)
must be at a logic high to control the attenuator in this manner.
Latched Parallel Mode - The attenuation state is selected using the Control Voltage Inputs and set while the LE is in
the Low state. The attenuator will not change state while LE is Low. Once all Control Voltage Inputs are at the desired
states the LE is pulsed. See timing diagram above for reference.
Timing Diagram (Latched Parallel Mode)
Power-Up States
LE PUP1 PUP2 Gain Relative to Maximum
Gain
000 -31.5
010 -24
001 -16
011 Insertion Loss
1X X 0 to -31.5 dB
Note: The logic state of D0 - D5 determines the
power-up state per truth table shown below when LE
is high at power-up.
Control Voltage Input Gain
Relative to
Maximum
Gain
D5 D4 D3 D2 D1 D0
High High High High High High 0 dB
High High High High High Low -0.5 dB
High High High High Low High -1 dB
High High High Low High High -2 dB
High High Low High High High -4 dB
High Low High High High High -8 dB
Low High High High High High -16 dB
Low Low Low Low Low Low -31.5 dB
Any combination of the above states will provide a reduction in
gain approximately equal to the sum of the bits selected.
If LE is set to logic LOW at power-up, the logic state of
PUP1 and PUP2 determines the power-up state of the
part per PUP truth table. If the LE is set to logic HIGH
at power-up, the logic state of D0-D5 determines the
power-up state of the part per truth table. The DVGA
latches in the desired power-up state approximately
200 ms after power-up.
Power-On Sequence
The ideal power-up sequence is: GND, Vdd, digital
inputs, RF inputs. The relative order of the digital
inputs are not important as long as they are powered
after Vdd / GND
Control Voltage Table
State Vdd = +3V Vdd = +5V
Low 0 to 0.5V @ <1 µA 0 to 0.8V @ <1 µA
High 2 to 3V @ <1 µA 2 to 5V @ <1 µA
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
8
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
Absolute Maximum Ratings
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Absolute Bias Resistor Range & Recommended Bias Resistor Values for Idd
Vdd Rbias Ω Total Idd (mA)
Min. Max. Recommended
3V 1K [1] Open Circuit
2.2k 195
4.7k 201
10k 206
5V 0Open Circuit
0231
120 243
270 252
[1] Operation with Vdd= 3V and Rbias < 1K Ohm may result in the part becoming conditionally stable which is not recommended.
Typical Supply Current vs. Vdd (Rbias =
270Ω for Vdd= 5V, Rbias= 10kΩ for Vdd= 3V)
Vdd (V) Total Idd (mA)
2.7 191
3.0 206
3.3 220
4.5 230
5.0 252
5.5 271
Note: Amplier will operate over full voltage ranges shown above.
Drain Bias Voltage (Vdd) 5.5 V
RF Input Power (RFIN)
(Vdd = +5 Vdc)
-5 dBm + Attenuation State
(do not exceed +10 dBm)
Channel Temperature 150 °C
Digital Inputs (Reset, Shift Clock,
Latch Enable, Serial Input) -0.5 to Vdd +0.5V
Continuous Pdiss (T= 85 °C)
(derate 28 mW/°C above 85 °C) 1.8 W
Thermal Resistance
(channel to ground paddle) 36.2 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
9
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
Pin Descriptions
Pin Number Function Description Interface Schematic
1RFIN RF input to the î› rst ampliî› er (AMP1) This pin is DC coupled
and matched to 50 Ohms.
2, 3, 21, 30 N/C No connection necessary. These pins may be connected to
RF/DC ground without affecting performance.
4RES This pin is used to set the DC current of the î› rst ampliî› er by
selection of external bias resistor. See application circuit.
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC708LP5 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H708
XXXX
HMC708LP5E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H708
XXXX
[1] Max peak reow temperature of 235 °C
[2] Max peak reow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
10
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
Pin Number Function Description Interface Schematic
5SEROUT Serial input data delayed by 6 clock cycles.
6, 7
9 - 14
PUP1, PUP2
D0 - D5
See truth table, control voltage
table and timing diagram.
8Vdd1 Supply voltage
15 P/S
See truth table, control voltage
table and timing diagram.
16 CLK
17 SERIN
18 LE
19, 23, 25,
26, 28 GND These pins and package bottom
must be connected to RF/DC ground.
20 RFOUT RF Output and DC BIAS for the second ampliî› er (AMP2).
See Application Circuit for off-chip components.
22 RFIN3
RF input for the second ampliî› er (AMP2).
This pin is DC coupled. An off-chip
DC blocking capacitor is required.
27 RFIN2 Input and output of the 6-bit digital attenuator (6-Bit DAT).
These pins are DC coupled and matched to 50 Ohms.
Blocking capacitors are required. Select value based
on lowest frequency of operation.
24 RFOUT2
29 RFOUT1 RF output for the î› rst ampliî› er (AMP1)
This pin is matched to 50 Ohms.
31, 32 Vdd2, Vdd3 Power Supply Voltage for the î› rst ampliî› er. External bypass
capacitors are required. See application circuit.
Pin Descriptions (Continued)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
11
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
Evaluation PCB
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package ground
leads and exposed paddle should be connected
directly to the ground plane similar to that shown.
A sufficient number of via holes should be used to
connect the top and bottom ground planes. The
evaluation circuit board shown is available from Hit-
tite upon request.
List of Materials for Evaluation PCB 120493 [1]
Item Description
J1 - J4 PCB Mount SMA Connector
J5 2mm Vertical Molex 28pos Connector
C1, C8, C10, C12, C18 220 pF Capacitor, 0402 Pkg.
C3 10 nF Capacitor, 0402 Pkg.
C6, C13, C15 1000 pF Capacitor, 0603 Pkg.
C7, C14 10 nF Capacitor, 0603 Pkg.
C16 27 pF Capacitor, 0603 Pkg.
C17 4.7 uF Capacitor, 0805 Pkg.
L2 15 nH Inductor, 0402 Pkg.
L3 6.8 nH Inductor, 0603 Pkg.
L4 47 nH Inductor, 0603 Pkg.
L5 5.1 nH Inductor, 0402
R1 (Rbias) 270 Ohm Resistor, 0402 Pkg.
R2 - R10 39K Ohm Resistor, 0402 Pkg.
Item Description
R12, R13 0 Ohm Resistor, 0402 Pkg.
U1 HMC708LP5(E) Variable Gain Ampliî› er
PCB [2] 120491 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR or Roger 4350
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12
HMC708LP5 / 708LP5E
v04.0112
0.5 dB LSB 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz
Application Circuit
Note 1:
For option 1 (Amp1 + 6-bit DAT only) remove L4. Move 220pF capacitor (0402 Pkg.) from location C10 to C11.
Note 2:
For option 2 (6-Bit DAT + Amp2 only) remove R13, L2, L3 and L5. Move 220pF capacitor (0402 Pkg.) from location
C8 to C9.
