High Speed Buffer
LLC
CLM6121 / CLM6321
FEATURES
GENERAL DESCRIPTION
• Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200V/µs
• Wide Bandwidth. . . . . . . . . . . . . . . . . . . . . . . . . . 100MHz
current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230mA
• Output
• High Input Impedance . . . . . . . . . . . . . . . . . . . . . . . . 2MΩ
• No Oscillations with Capacitive Loads
to ±15V Operation Guaranteed
• 5V
• Current and Thermal Limiting
• Fully Specified to Drive 50Ω Lines
The CLM6121 family are high speed unity gain buffers that slew
at 1200V/µs, having a small signal bandwidth of 100MHz, and
capable of providing a continuous output current of ±200mA.
They are monolithic ICs which are pin to pin compatible with
the LH0002H/CH with the additional feature of current limiting.
The internal output short circuit current limiting feature has
been designed in the device such that when the junction
temperature reaches 170oC, the current is limited to 100mA.
APPLICATIONS
ORDERING INFORMATION
Driving
• Line
• Radar
• Sonar
Part
Package
CLM6121 H
CLM6321 H
CLM6121 N
CLM6321 N
CLM6121 M
CLM6321 M
Hermetic TO5 8 Lead
Hermetic TO5 8 Lead
Plastic P Dip 8 Lead
Plastic P Dip 8 Lead
SOIC 8 Lead
SOIC 8 Lead
Temperature Range
CLM6321 S
SOIC 14 Lead
-55oC to 125oC
-40oC to 85oC
-40oC to 85oC
-40oC to 85oC
-25oC to 70oC
-25ooC to 70oC
-25 C to 70 oC
CONNECTION DIAGRAMS
Plastic DIP
*VVIN
N/C
*V-
Metal Can
1
8
2
7
3
6
4
5
VIN
V-*
VOUT
Plastic SO
V1+
V1-
8
1
VIN
7
V+
V-*
V2+ 2
6 V23
N/C
*Heat-sinking pins. Pin 1 and Pin 8
must be connected to the negative supply.
1
8
2
7
3
6
4
5
V-*
VOUT
V+
V-*
N/C
VOUT
Top View
Package NO8A
N/C
*V-
5
4
*V-
Package HO8A
*Heat-sinking pins. Pin 1 and Pin 8
must be connected to the negative supply.
Package MO8A
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT, CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX
DS034 REV B
CLM6121/CLM6321
New Package Release April 2004
Plastic SO-14
1
14
H/S **
H/S **
2
13
H/S **
H/S **
3
12 OUTPUT
4
11 V+
5
10 N/C
V-*
N/C
INPUT
6
9
H/S **
H/S **
7
H/S **
8
H/S **
*Pin 3 must be connected to the negative supply.
**Heat-sinking pins. See application section on heat sinking requirements.
These pins are at V - Potential.
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT, CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX
DS034 REV B
CLM6121 / CLM6321
LLC
ABSOLUTE MAXIMUM RATINGS (Note 1)
If Military/Aerospace specified devices are required, please
contact the Calogic Sales Office for availability and
specifications.
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±Vsupply
Short Circuit to GND (Note 2) . . . . . . . . . . . . . . . . Continuous
Storage Temperature Range . . . . . . . . . . . . -65oC to +150oC
Lead Temperature
(Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . 260oC
ESD Tolerance (Note 4). . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance (θJA) (Note 7)
H Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
M Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance (θJC)
H Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±2000V
125oC/W
50oC/W
60oC/W
15oC/W
DC ELECTRICAL CHARACTERISTICS
The following specifications apply for Supply Voltage = ±15V, VCM = 0, RL ≥ 100kΩ and RS = 50Ω unless otherwise noted.
Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25oC.
SYMBOL
CHARACTERISTICS
TYP
CLM6121
CLM6321
Limit
(Note 6)
Limit
(Note 6)
UNITS
CONDITIONS
AV1
Voltage Gain 1
0.990
0.980
0.970
0.970
0.950
AV2
Voltage Gain 2
0.900
0.860
0.800
0.850
0.820
AV3
Voltage Gain 3
0.840
0.780
0.750
0.750
0.700
VOS
Offset Voltage
15
30
50
50
100
mV Max
RL = 1kΩ
IB
Input Bias Current
1
4
7
5
7
µA Max
RL = 1kΩ, RS = 10kΩ,
RIN
Input Resistance
5
MΩ
CIN
Input Capacitance
3.5
pF
RO
Output Resistance
3
5
10
5
6
IS1
Supply Current 1
15
18
20
20
22
RL = 1kΩ, VIN = ±10V
V/V Min
RL = 50Ω, VIN = ±10V
RL = 50Ω, V+ = 5V
VIN = 2VPP
Ω Max
RL = 50Ω
IOUT = ±10mA
RL = ∞
mA Max
14
16
18
18
20
Output Swing 1
13.5
13.3
13
13.2
13
VO2
Output Swing 2
12.7
11.5
10
11
10
VO3
Output Swing 3
12
11
9
10
9
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
IS2
Supply Current 2
VO1
RL = ∞, V+ = 5V
RL = 1k
±V Min
RL = 100Ω
RL = 50Ω
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT, CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX
DS034 REV B
CLM6121 / CLM6321
LLC
AC ELECTRICAL CHARACTERISTICS
The following specifications apply for Supply Voltage = ±15V, VCM = 0, RL ≥ 100kΩ and RS = 50Ω unless otherwise noted.
Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25oC.
CLM6121
SYMBOL
CHARACTERISTICS
CLM6321
TYP
UNITS
CONDITIONS
Limit (Note 6) Limit (Note 6)
SR1
Slew Rate 1
1200
550
550
V/µs
VIN = ±11V, RL = 1kΩ
SR2
Slew Rate 2
800
550
550
V/µs
VIN = ±5V, RL = 50Ω (Note 3)
SR3
Slew Rate 3
650
550
550
V/µs
VIN = 2 VPP, RL = 50Ω
V+ = 5V
BW
-3 dB Bandwidth
50
30
30
MHz
VIN = ±100 mVPP, RL = 50Ω
CL ≤ 10pF
t r, t f
Rise Time
Fall Time
7.0
ns
RL = 50Ω, CL ≤ 10pF
VO = 100mVPP
t pd
Propagation Delay Time
4.0
ns
RL = 50Ω, CL ≤ 10pF
VO = 100mVPP
OS
Overshoot
10
%
RL = 50Ω, CL ≤ 10pF
VO = 100mVPP
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not
apply when operating the device beyond its rated operating conditions.
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 impedance at 25 oC. For accurate measurements, the input slew rate
should be at least 1700V/µs.
Note 4: The test circuit consists of the human body model of 120pF in series with 1500Ω.
Note 5: The maximum power dissipation is a function of T J(max), θJA and TA. The maximum allowable power dissipation at any ambient
temperature is PD = (T J(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 and V - pins are connected to 2 square
inches of 2 oz copper.
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT, CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX
DS034 REV B
CLM6121 / CLM6321
PSSR
vs Frequency
Rise Time
vs Temperature
10
+60
VS = ±15V
VRIPPLE = 100mV
R S = R L = 50Ω
+50
TJ = 25˚C
+70
POSITIVE
SUPPLY
+40
NEGATIVE
SUPPLY
4
2
0
1M
VS = ±5V
10M
VS = ±15V
f = 1MHz
100M
-25
500
R L = 50Ω
0
25
75
125
175
0
±5
±10
±15
FREQUENCY (Hz)
TEMPERATURE (˚C)
SUPPLY VOLTAGE (±V)
Slew Rate
vs Temperature
Slew Rate
vs Capacitive Load
Output Resistance
vs Supply Voltage
R L = 1k
VIN = ±10V
SLEW RATE (V/µs)
R L = 50Ω
VIN = ±5V
500
250
750
500
R L = 50Ω
VIN = ±5V
250
-25
VS = ±15V
TJ = 25˚C
R L = 1k
VIN = ±10V
SR =
VS = ±15V
0
25
75
0
10
125
200mA
CL
IOUT AC = 1mA
IOUT DC = 0
40
30
TJ = +125˚C
20
TJ = +25˚C
10
TJ = -55˚C
0
40
400 1000 2000
100
0
±5
±10
±15
JUNCTION TEMPERATURE (˚C)
CAPACITIVE LOAD (pF)
SUPPLY VOLTAGE (±V)
Output Impedance
vs Frequency
Supply Current
vs Supply Voltage
Input Current
vs Supply Voltage
1000
20
VS = ±15V
TJ = 25˚C
IOUT AC = 100µA
10
R S = 50Ω
SUPPLY CURRENT (mA)
R S = 100k
14
TJ = -55˚C
12
10
8
TJ = +25˚C
6
4
TJ = +125˚C
10M
100M
+30
+20
TJ = +125˚C
+10
0
-10
TJ = +25˚C
-20
-30
-40
0
1M
VIN = 0V
+40
16
2
FREQUENCY (Hz)
±20
+50
IOUT = 0mA
18
100
±20
50
1000
750
1
100k
R L = 1k
750
250
VOUT = 100mVpp
1250
1000
SLEW RATE (V/µs)
6
0
1250
OUTPUT IMPEDANCE (Ω)
1000
R L = 50Ω
R L = 1k
+10
100k
TJ = 25˚C
OUTPUT RESISTANCE (Ω)
+20
1250
VS = ±5V
VS = ±15V
INPUT CURRENT (µA)
+30
8
Slew Rate
vs Supply Voltage
SLEW RATE (V/µs)
+80
RISE TIME (ns)
POWER SUPPLY REJECTION RATIO (dB)
LLC
TJ = -55˚C
-50
0
±5
±10
±15
SUPPLY VOLTAGE (V)
±20
0
±5
±10
±15
±20
SUPPLY VOLTAGE (V)
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT,CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX
DS034 REV B
CLM6121 / CLM6321
LLC
Voltage Gain vs Frequency
Input Resistance
vs Temperature
25
VS = ±15V
VIN = ±12V
R L = 100Ω
VOLTAGE GAIN (dB)
INPUT RESISTANCE (MΩ)
20
10
4.0
2.0
1.0
0.4
15
10
0.1
R L > 1k
0
-5
-10
R L = 50Ω
R L = 10Ω
-20
-25
-25
25
75
125
175
1
4
JUNCTION TEMPERATURE (˚C)
Voltage Gain vs Frequency
50Ω Resistive Load Different Capacitive Loads
10
40
10
CL = 1000pF
CL = 500pF
CL = 100pF
0
-5
-10
-15
CL = 0.01µF
10
40
-10 VS = ±15V
-15 R L = 10MΩ
T = 25˚C
-20 J
VO < 100mV
-25
1
4
R L = 10Ω
R L = 50Ω
-50
VS = ±15V
R S = 50Ω
TJ = 25˚C
VO < 100mV
-60
-70
1
100 200
4
FREQUENCY (MHz)
100 200
-20
-30
40
100 200
FREQUENCY (MHz)
R S = 1k
-40
R S = 10k
-50
-60
-70
-80
10
R S = 50Ω
-10
-20
-40
40
Different Source Resisters
-10
-30
10
0
-90
4
0
-5
Phase Shift vs Frequency
RL = ∞
-80
-25
1
5
Phase Shift vs Frequency
0
5
-20
CL = 1000pF
10
FREQUENCY (MHz)
PHASE SHIFT (DEGREES)
15
15
Different Resistive Loads
PHASE SHIFT (DEGREES)
VOLTAGE GAIN (dB)
20
100 200
CL = 100pF
CL = 500pF
FREQUENCY (MHz)
25
VS = ±15V
R L = 50Ω
TJ = 25˚C
VO < 100mV
CL = 0.01µF
20
5
-15
0.2
R L = 100Ω
VS = ±15V
CL < 10pF
TJ = 25˚C
VO = 100mV
20
No Resistive Load Different Capacitive Loads
25
VOLTAGE GAIN (dB)
100
40
Voltage Gain vs Frequency
Different Resistive Loads Fixed Capacitive Load
VS = ±15V
R L = 50Ω
TJ = 25˚C
VO < 100mV
-90
100k
1M
10M
100M
FREQUENCY (Hz)
Small Signal Bandwidth
vs Supply Voltage
-3 dB BANDWIDTH (MHz)
200
150
VIN = 100mV
R L = 50Ω
R S = 50Ω
TJ = -55˚C
TJ = +25˚C
100
TJ = +125˚C
50
0
0
±5
±10
±15
±20
SUPPLY VOLTAGE (±V)
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT, CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX
DS034 REV B