High Speed Buffer
CORPORATION
CLM4121 / CLM4321
FEATURES
GENERAL DESCRIPTION
The CLM4121 family are high speed unity gain buffers that
slew at 2000V/µs, having a small signal bandwidth of
180MHz, delivers 150mA, yet draws only 7mA supply current.
The fast slew rate, wide bandwidth, and high output drive
make the CLM4121 family the ideal choice for closed loop
buffer applications with wide band op amps.
These same characteristics are the excellent choices for open
loop applications such as driving coaxial and switched pair
cables.
ORDERING INFORMATION
Part
CLM4121 N
CLM4121 M
CLM4321 N
CLM4321 M
Package
Temperature Range
-40
o
C to 85
o
C
-40
o
C to 85
o
C
-25
o
C to 70
o
C
-25
o
C to 70
o
C
NO8A (Plastic P Dip 8 Lead)
MO8B (SOIC 8 Lead)
NO8A (Plastic P Dip 8 Lead)
MO8B (SOIC 8 Lead)
•
High Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . 2000V/µs
•
Wide Bandwidth. . . . . . . . . . . . . . . . . . . . . . . . . . 180MHz
Output Current
•
PeakSupply Current .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 300mA
Low
. 7mA
•
•
No Oscillations with Capacitive Loads
±15V
Operation Guaranteed
•
5V to Specified to Drive 50Ω Lines
•
Fully
•
Coaxial Cable Driver
•
Flash A/D Converter Driver
•
Video DAC Buffer
•
OP Amp Booster
Amplifier
•
VideoFrequency Filter
High
•
•
Wide Bandwidth Signal Conditioning
•
Radar
•
Sonar
CONNECTION DIAGRAMS
APPLICATIONS
Plastic DIP
*V-
V
IN
N/C
*V-
1
2
3
4
8
7
6
5
V-*
V
OUT
V+
V-*
Plastic SO
*V-
V
IN
N/C
*V-
1
2
3
4
8
7
6
5
V-*
V
OUT
V+
V-*
*Heat-sinking pins. Pin 1 and Pin 8
must be connected to the negative supply.
*Heat-sinking pins. Pin 1 and Pin 8
must be connected to the negative supply.
Package MO8B
Package NO8A
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
CLM4121 / CLM4321
CORPORATION
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±20
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±Vsupply
Storage Temperature Range . . . . . . . . . . . . -65
o
C to +150
o
C
Lead Temperature
(Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . 260
o
C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . (Note 4)
ESD Tolerance (Note 3). . . . . . . . . . . . . . . . . . . . . . .
±2000V
Thermal Resistance (θ
JA
) (Note 6)
N Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
o
C/W
M Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
o
C/W
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . 150
o
C
DC ELECTRICAL CHARACTERISTICS
The following specifications apply for Supply Voltage =
±15V,
V
CM
= 0, R
L
≥
100KΩ and R
S
= 50Ω unless otherwise noted.
Boldface
limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25
o
C.
CLM4121
SYMBOL
CHARACTERISTICS
TYP
Limit
(Note 5)
0.950
0.950
0.800
0.800
0.780
0.750
20
30
5
7
.2
CLM4321
Limit
(Note 5)
0.950
0.950
0.800
0.800
0.750
0.700
30
30
10
10
.2
mV Max
µA
Max
MΩ
pF
5
10
10
10
5
5
13.3
13
10
9
1.6
1.3
140
60
60
5
6
10
10
mA Max
I
S2
V
O1
V
O2
V
O3
I
OUT
PSSR
Supply Current 2
Output Swing 1
Output Swing 2
Output Swing 3
Output Current
Power Supply
Rejection Ratio
2.5
13.5
12.7
1.8
200
70
5
5
13.2
13
10
9
1.6
1.5
140
60
60
V
PP
Min
mA
dB Min
R
L
=
∞,
V
+
= 5V
R
L
= 1K
±V
Min
R
L
= 100Ω
R
L
= 50Ω, V
+
= 5V (Note 5)
V
IN
=
±13V
V
±
=
±5V
to
±15V
Ω
Max
I
OUT
=
±10mA
R
L
=
∞
V/V Min
UNITS
CONDITIONS
A
V1
A
V2
A
V3
V
OS
I
B
R
IN
C
IN
R
O
I
S1
Voltage Gain 1
Voltage Gain 2
Voltage Gain 3
Offset Voltage
Input Bias Current
Input Resistance
Input Capacitance
Output Resistance
Supply Current 1
0.970
0.900
0.840
15
1
0.5
3.5
3
7.5
R
L
= 1KΩ, V
IN
=
±10V
R
L
= 50Ω, V
IN
=
±6V
R
L
= 50Ω, V
+
= 5V
V
IN
= 2V
PP
R
L
= 1KΩ
R
L
= 1KΩ, R
S
= 10kΩ,
R
L
= 50Ω
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
CLM4121 / CLM4321
CORPORATION
AC ELECTRICAL CHARACTERISTICS
The following specifications apply for Supply Voltage =
±15V,
V
CM
= 0, R
L
≥
100KΩ and R
S
= 50Ω unless otherwise noted.
Boldface
limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25
o
C.
CLM4121
SYMBOL
CHARACTERISTICS
TYP
Limit (Note 5)
SR
1
SR
2
SS
BW
LS
BW
P
BW
t
r
, t
f
t
pd
O
S
Slew Rate 1
Slew Rate 2
Small Signal Bandwidth
Large Signal Bandwidth
Power Bandwidth
Rise Time
Fall Time
Propagation Delay Time
Overshoot
4000
2000
180
65
40
2.0
3.0
10
3500
1500
140
55
30
2.5
Limit (Note 5)
2500
V/µs
1000
100
40
20
3.5
ns
ns
%
MHz
V
IN
=
±11V,
R
L
= 1KΩ (Note 2)
V
IN
=
±5V,
R
L
= 50Ω (Note 2)
V
IN
=
±100mV
PP
, R
L
= 50Ω
C
L
≤
10pF
V
IN
=
±11V,
R
L
= 1K
C
L
≤
10pF
V
IN
=
±8V,
R
L
= 50Ω
C
L
≤
10pF
R
L
= 50Ω, C
L
≤
10pF
V
O
= 100mV
PP
R
L
= 50Ω, C
L
≤
10pF
V
O
= 100mV
PP
R
L
= 50Ω, C
L
≤
10pF
V
O
= 100mV
PP
CLM4321
UNITS
CONDITIONS
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:
Slew rate is measured with 50Ω source impedance at 25
o
C. For accurate measurements, the input slew rate should be at least
5000V/µs.
Note 3:
The test circuit consists of the human body model of 120pF in series with 1500Ω.
Note 4:
The maximum power dissipation is a function of T
J(max),
θ
JA
and T
A
. The maximum allowable power dissipation at any ambient
temperature is P
D
= (T
J(max)
- T
A
)/θ
JA
.
Note 5:
Limits are guaranteed by testing, correlation or periodic characterization.
Note 6:
For M & N package,
θ
JA
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 CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
CLM4121 / CLM4321
CORPORATION
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY RESPONSE
80
FREQUENCY RESPONSE
PHASE LAG (DEGREES)
PHASE LAG (DEGREES)
0
R
L
= 1K
V
IN
≤
100mV
C
L
≤
10pF
T
j
= 25˚C
GAIN (dB)
64
0
R
L
= 50Ω
V
IN
≤
100mV
C
L
≤
10pF
T
j
= 25˚C
GAIN (dB)
80
-2
48
-2
60
-4
32
-4
40
-6
16
-6
20
-8
1
2
5
10 20
0
50 100 200 400
-8
1
2
5
10 20
0
50 100 200 400
FREQUENCY (MHz)
FREQUENCY (MHz)
BANDWIDTH
(LARGE SIGNAL & POWER)
30
R
L
= 10K
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
2
4
SUPPLY VOLTAGE
vs BANDWIDTH
24
V
IN
(V
P-P
)
18
R
L
= 50Ω
-3dB BANDWIDTH (MHz)
R
L
= 1K
12
R
L
= 50Ω
6
0
1
2
5
10 20
50 100 200 400
FREQUENCY (MHz)
6
8 10 12 14 16 18 20
SUPPLY VOLTAGE (±V)
SUPPLY VOLTAGE
vs SUPPLY CURRENT
11
SUPPLY CURRENT (±mA)
INPUT VOLTAGE
vs SLEW RATE
4500
4000
SLEW RATE (V/µs)
10
9
8
7
6
5
4
3
2
1
0
1
3
5
7
9 11 13 15 17 19
SUPPLY VOLTAGE (±V)
3500
3000
2500
2000
1500
1000
500
0.0
2
6
R
L
= 1K
R
L
= 50Ω
10
14
18
22
V
IN
(V
P-P
)
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
CORPORATION
MO8B DIMENSIONS
8
7
6
5
.213
.205
(5.4)
(5.2)
(TOP VIEW)
1
2
3
4
MO8B-8 LEAD SOIC
.050
(1.27)
.020
(.50)
.013
(.33)
.210
.205
(5.32)
(5.19)
.074
.070
(1.87)
(1.77)
.318
.302
(8.10)
(7.64)
.010
.006
(.25)
(.15)
.010
(.25)
.004
(.10)
.023
(.58)
.019
(.48)
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
