High Speed Buffer
CLM6121 / CLM6321
FEATURES
••Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 00V/µs
••Wi de Ba n dwi dt h. . . . . . . . . . . . . . . . . . . . . . . . . . 100M Hz
••Output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230mA
••High Input Impeda nce. . . . . . . . . . . . . . . . . . . . . . . . 2MΩ
••No Osc illat ions wi th Capac itive Lo ads
••5V to ±1 5V O per ation G ua r anteed
••Current and Thermal L im iting
••Full y S p e ci fi e d t o D r iv e 5 0Ω Line s
APPLICATIONS
••Line Driving
••Radar
••Sonar
GENERAL DESCRIPTIO N
The CLM6121 family are high speed uni ty gain buffers that slew
at 12 0 0V / µs, having a sma ll signal bandwidth of 100MHz, and
capabl e of providi ng a continuous output current of ±200mA.
They are monolithic ICs which are pin to pin compatible with
the LH0002H/ CH w ith the addition al featu re of cu rrent limiting.
The internal output short circuit current limiting feature has
been designed in the device such that when the junction
tem per at ur e reac hes 1 7 0oC, the current is limited to 100mA.
ORDERING INFORMATION
Part Package Temperature Range
CLM61 21 H Herm etic TO5 8 Lead -55oC to 125oC
CLM63 21 H Herm etic TO5 8 Lead -40oC to 85oC
CLM6121 N Plastic P Dip 8 Lead -40oC to 85oC
CLM6321 N Plastic P Dip 8 Lead -40oC to 85oC
CLM61 21 M SOIC 8 Lead -25oC to 70oC
CLM63 21 M SOIC 8 Lead -25oC to 70oC
CORPORATION
CALOGIC CORPORATION, 237 W hitney Place, F rem ont, Califor nia 94539, Teleph one: 510-65 6-2900, FAX: 510-6 51-1076
CONNECTION DIAGRAMS
1
2
3
45
6
7
8
Plastic SO
V
N/C
*V- V-*
V+
V
*Heat-sinking pins. Pin 1 and Pin 8
must be connected to the negative supply.
IN OUT
*V- V-*
1
2
3
45
6
7
8
Plastic DIP
*V-
N/C
V-*
V+
V-*
*V-
V
IN
V
OUT
*Heat-sinking pins. Pin 1 and Pin 8
must be connected to the negative supply.
1
2
345
6
7
8
N/C N/C
V
IN
V
OUT
V
Metal Can
Top View
1+
V
2+
V
1-
V
2-
Package NO8A Package HO8A Package MO8A
ABSOLUTE M AXIM UM R A T INGS ( Note 1)
If Military/Aerospace specified devices are required, please
contact the Calogic Sales Office for availability and
specifications.
Supply V o ltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18
Input Volt age . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±Vsupply
Short Circu it to GND (Not e 2) . . . . . . . . . . . . . . . . Cont inuous
Stor age Tem per atur e Ra nge. . . . . . . . . . . . -65oC to +150oC
Lead Te m peratur e
(Solder ing 10 se conds) . . . . . . . . . . . . . . . . . . . . . . 260oC
ESD Toleranc e (Not e 4). . . . . . . . . . . . . . . . . . . . . . . ±2000V
Therm al Resistance ( θJA) (Not e 7)
H Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125oC/W
N Packa ge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50oC/W
M Packa ge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60oC/W
Therm al Resistance ( θJC)
H Packa ge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15oC/W
CLM6121 / CLM6321
CORPORATION
CALOGIC CORPORATION, 237 W hitney Place, F rem ont, Califor nia 94539, Teleph one: 510-65 6-2900, FAX: 510- 6 51-1076
DC ELECTRICA L CHARACT ERISTICS
The f ollowing sp ecificat ions apply f or Supply V o ltage = ±15V, VCM = 0, RL ≥ 100kΩ and RS = 50 Ω un less otherwise no te d.
Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25oC.
SYMBOL CHARACTERISTICS TYP CLM6121 CLM6321 UNITS CONDITIONS
Limit
(Note 6) Limit
(Note 6)
AV1 Voltage Gain 1 0.990 0.980
0.970 0.970
0.950
V/V Min
RL = 1kΩ, VIN = ±10V
AV2 Voltage Gain 2 0.900 0.860
0.800 0.850
0.820 RL = 50Ω, VIN = ±10V
AV3 Voltage Gain 3 0.840 0.780
0.750 0.750
0.700 RL = 50Ω, V+ = 5V
VIN = 2VPP
VOS Offset Voltage 15 30
50 50
100 mV Max RL = 1kΩ
IBInput Bias Current 1 4
75
7µA Max RL = 1kΩ, RS = 10kΩ,
RIN Input Resistance 5 MΩRL = 50Ω
CIN Input Capacitance 3.5 pF
ROOutput Resistance 3 5
10 5
6Ω Max I OUT = ±10mA
IS1 Supply Current 1 15 18
20 20
22 mA Max RL = ∞
IS2 Supply Current 2 14 16
18 18
20 RL = ∞, V+ = 5 V
VO1 Output Swing 1 13.5 13.3
13 13.2
13
±V Min
RL = 1k
VO2 Output Swing 2 12.7 11.5
10 11
10 RL = 100Ω
VO3 Output Swing 3 12 11
910
9RL = 50Ω
VO4 Output Swing 4 1.8 1.6
1.3 1.6
1.5 VPP Min RL = 50Ω, V+ = 5V (Note 6)
PSSR Power Supply
Rejection Ratio 70 60
55 60
50 dB Min V± = ±5V to ±15V
CLM6121 / CLM6321
CORPORATION
CALOGIC CORPORATION, 237 W hitney Place, F rem ont, Califor nia 94539, Teleph one: 510-65 6-2900, FAX: 510- 6 51-1076
AC ELECTRICA L CHARACT ERISTICS
The f ollowing sp ecificat ions apply f or Supply V o ltage = ±15V, VCM = 0, RL ≥ 100kΩ and RS = 50 Ω un less otherwise no te d.
Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25oC.
SYMBOL CHARACTERISTICS TYP CLM6121 CLM6321 UNITS CONDITIONS
Limit (Note 6) Limit (Note 6)
SR1Slew Rate 1 1200 550 550 V/µsV
IN = ±11V, RL = 1kΩ
SR2Slew Rate 2 800 550 550 V/µsV
IN = ±5V, RL = 50Ω (Note 3)
SR3Slew Rate 3 650 550 550 V/µsVIN = 2 VPP, RL = 50Ω
V+ = 5V
BW -3 dB Bandwidth 50 30 30 MHz VIN = ±100 mVPP, R L = 50Ω
CL ≤ 10pF
tr, tfRise Time
Fall Ti me 7.0 ns RL = 50Ω, CL ≤ 10pF
VO = 100mVPP
tpd Propagation Delay Time 4.0 ns RL = 50Ω, CL ≤ 10pF
VO = 100mVPP
OSOvershoot 10 % RL = 50Ω, CL ≤ 10pF
VO = 100mVPP
Note 1: Absolut e M a ximum Rati ng s ind icate limit s b eyon d which damage to th e device may oc cur. DC an d AC elect rical speci ficati on s d o not
app ly whe n o pe rat ing th e device be yond its ra ted o pe rati ng co nditi on s.
Note 2: The CLM6121 series buffers contain current limit and thermal shutdown to protect against fault conditions.
Note 3: Slew rate is measured with a ±11V input pulse and 50Ω source i mpedanc e at 25oC. For accurate measurements, the input slew rate
should be at least 1700V/µs.
Note 4: Th e test circuit co nsists of the human b ody mo del of 120 pF in series with 1500Ω.
Note 5: Th e maximum po wer dissipation is a functio n of T J(max), θJA and TA. The maximum allowable power dissipation at any ambient
te mpe rature i s PD = (TJ(max) - TA)/θJA.
Note 6: Limits are guaranteed by testing, correlation or periodic characterization.
Note 7: For M & N package, θJA is measured by soldering the unit directly on a printed circuit board an d V - pins are connecte d to 2 square
inches of 2 oz copper.
CLM6121 / CLM6321
CORPORATION
CALOGIC CORPORATION, 237 W hitney Place, F rem ont, Califor nia 94539, Teleph one: 510-65 6-2900, FAX: 510- 6 51-1076
Slew Rate
vs Temperature
1250
1000
750
500
250
0-25 25 75 125
JUNCTION TEMPERATURE (˚C)
SLEW RATE (V/
µ
s)
= ±10V
IN
V
L
= 50Ω
R= ±5V
IN
V
S
V = ±15V
L
= 1kR
Output Resistance
vs Supply Voltage
50
40
30
20
10
0±5
SUPPLY VOLTAGE (±V)
±10 ±15 ±200
OUTPUT RESISTANCE (Ω)
T
J
= -55˚C
T
J
= +25˚C
T
J
= +125˚C
= 0
OUT DC
I= 1mA
OUT AC
I
Slew Rate
vs Capacitive Load
1250
1000
750
500
250
010 40 100 400
CAPACITIVE LOAD (pF)
SLEW RATE (V/
µ
s)
10002000
= ±10V
IN
V
T
J
= 25˚C
V = ±15V
S
L
= 50Ω
R= ±5V
IN
V
SR = 200mA
L
= 1kR
L
C
Output Impedance
vs Frequency
1000
100
10
11M
FREQUENCY (Hz)
10M 100M100k
OUTPUT IMPEDANCE (Ω)
S
= 100µA
OUT AC
I
V = ±15V
T
J
= 25˚C
R= 50Ω
S
R = 100k
S
Input Current
vs Supply Voltage
+50
+30
+10
-10
-30
-50 ±5
SUPPLY VOLTAGE (V)
±10 ±15 ±200
+40
+20
0
-20
-40
INPUT CURRENT (
µ
A)
T
J
= +25˚C
T
J
= +125˚C
= 0V
IN
V
T
J
= -55˚C
Supply Current
vs Supply Voltage
20
16
12
8
4
0±5
SUPPLY VOLTAGE (V)
±10 ±15 ±200
18
14
10
6
2
SUPPLY CURRENT (mA)
T
J
= -55˚C
T
J
= +25˚C
T
J
= +125˚C
= 0mA
OUT
I
PSSR
vs Frequency
+80
+70
+60
+50
+40
+30
+20
+10
0
100k 1M 10M 100M
FREQUENCY (Hz)
POWER SUPPLY REJECTION RATIO (dB)
POSITIVE
SUPPLY
NEGATIVE
SUPPLY
R
RIPPLE
V
S
V = ±15V
S
= R
L
= 50Ω
= 100mV
T
J
= 25˚C
Slew Rate
vs Supply Voltage
1250
1000
750
500
250
0±5
SUPPLY VOLTAGE (±V)
SLEW RATE (V/µs)
±10 ±15 ±200
T
J
= 25˚C
L
= 50Ω
R
L
= 1kR
Rise Time
vs Temperature
10
8
6
4
2
0-25 25 75 125
TEMPERATURE (˚C)
RISE TIME (ns)
175
L
= 1kR
S
V = ±5V
S
V = ±15V
S
V = ±5V
S
V = ±15V
L
= 50Ω
R
f = 1MHz
= 100mV
OUT
V
pp
CLM6121 / CLM6321
CORPORATION
Voltage Gain vs Frequency
50Ω Resistive Load -
Different Capacitive Loads
25
20
15
10
5
0
-5
-10
-15
-20
-251 4 10 40 100 200
FREQUENCY (MHz)
VOLTAGE GAIN (dB)
S
V
O
< 100mV
T
J
= 25˚C
L
= 50Ω
R
V = ±15V C
L
= 1000pF
C
L
= 500pF
C
L
= 100pF
C
L
= 0.01µF
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
100k 1M 10M 100M
FREQUENCY (Hz)
PHASE SHIFT (DEGREES)
Phase Shift vs Frequency
Different Source Resisters
S
V
O
< 100mV
T
J
= 25˚C
V = ±15V
R= 50Ω
L
R= 50Ω
S
R = 10k
S
R= 1k
S
0
-10
-20
-30
-40
-50
-60
-70
-80
-901 4 10 40 100 200
FREQUENCY (MHz)
PHASE SHIFT (DEGREES)
Phase Shift vs Frequency
Different Resistive Loads
S
V
O
< 100mV
T
J
= 25˚C
V = ±15V
R= 50Ω
S
L
= ∞
R
= 10Ω
R
L
R
L
= 50Ω
Small Signal Bandwidth
vs Supply Voltage
200
150
100
50
0±5
SUPPLY VOLTAGE (±V)
±10 ±15 ±200
-3 dB BANDWIDTH (MHz)
T
J
= -55˚C
T
J
= +25˚C
T
J
= +125˚C
R= 50Ω
S
= 50Ω
R
L
= 100mV
IN
V
Input Resistance
vs Temperature
100
40
20
10
4.0
2.0
1.0
0.4
0.2
-25 25 75 125
JUNCTION TEMPERATURE (˚C)
INPUT RESISTANCE (M
Ω
)
0.1 175
V = ±15V
S
= ±12V
IN
V= 100Ω
R
L
Voltage Gain vs Frequency
No Resistive Load -
Different Capacitive Loads
25
20
15
10
5
0
-5
-10
-15
-20
-251 4 10 40 100 200
FREQUENCY (MHz)
VOLTAGE GAIN (dB)
C
L
= 1000pF
C
L
= 500pF
C
L
= 0.01µF
S
V
O
< 100mV
T
J
= 25˚C
L
= 10MΩ
R
V = ±15V
C
L
= 100pF
Voltage Gain vs Frequency
Different Resistive Loads -
Fixed Capacitive Load
25
20
15
10
5
0
-5
-10
-15
-20
-251 4 10 40 100 200
FREQUENCY (MHz)
VOLTAGE GAIN (dB)
R= 100Ω
L
= 10Ω
R
L
R> 1k
L
R
L
= 50Ω
V = ±15V
S
V
O
= 100mV
T
J
= 25˚C
C
L
< 10pF
CALOGIC CORPORATION, 237 W hitney Place, F rem ont, Califor nia 94539, Teleph one: 510-65 6-2900, FAX: 510- 6 51-1076