www.fairchildsemi.com
KH232
Low Distortion Wideband Op Amp
Features
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General Description
The KH232 is a wideband low distortion operational
amplifier designed specifically for high speed, low gain
applications requiring wide dynamic range. Utilizing a
current feedback architecture, the KH232 offers high
speed performance while maintaining DC precision.
The KH232 offers precise gains from 鹵1 to 鹵5 with a
true 0.1% linearity and provides stable, oscillation-
free operation across the entire gain range without
external compensation. The KH232, a pin compatible
enhanced version of the KH231, reduces 2nd and 3rd
harmonic distortion to an extremely low -69dBc at
20MHz (2V
pp
, R
L
= 100鈩?. Additional features provided
by the KH232 include a small signal bandwidth of
270MHz, a large signal bandwidth of 95MHz and a
3000V/碌s slew rate. The input offset voltage is typically
1mV with an input offset drift of 10碌V/擄C.
The KH232 combines these high performance features
with its 0.05% settling time of 15ns and its 100mA
drive capability to provide high speed, high resolution
A/D and D/A converter systems with an attractive
solution for driving and buffering. Wide dynamic
range systems such as radar and communication
receivers requiring low harmonic distortion and low
noise will find the KH232 to be an excellent choice. As
a line driver, the KH232 set at a gain of 2 cancels
matched line losses.
The KH232 is constructed using thin film resistor/bipolar
transistor technology, and is available in the following
versions:
Supply
Voltage
-69dBc 2nd and 3rd harmonics at 20MHz
-3dB bandwidth of 270MHz
0.05% settling in 15ns
3000V/碌s slew rate
1mV input offset voltage, 10碌V/擄C drift
鹵10V, 100mA max output
Direct replacement for CLC232
Applications
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Flash A/D drivers
DAC current-to-voltage conversion
Wide dynamic range IF amps
VCO drivers
DDS postamps
Radar/communication receivers
Precision line drivers
Bottom View
I
CC
Adjust
Case
ground
GND
7
Adjust -V
CC
8
9
-V
CC
V+ 6
10
Collector
Supply
Output
KH232AI
KH232AK
KH232AM
-25擄C to +85擄C
-55擄C to +125擄C
-55擄C to +125擄C
Non-Inverting
Input
Inverting
Input
Not
Connected
+
V- 5
NC 4
3
Case
ground
GND
2
4
4
-
11 V
o
12
+V
CC
Collector
Supply
1
Supply
Voltage
KH232HXC
KH232HXA
-55擄C to +125擄C
-55擄C to +125擄C
12-pin TO-8 can
12-pin TO-8 can, features
burn-in & hermetic testing
12-pin TO-8 can,
environmentally
screened and electrically
tested to MIL-STD-883
SMD#: 5962-9166501HXC
SMD#: 5962-9166501HXA
Adjust +V
CC
I
CC
Adjust
Typical Performance
Gain Setting
Parameter
1
2
5
-1
-2
-5
Units
MHz
ns
V/ns
ns
-3dB bandwidth
430 270 135 220 175 110
rise time (2V)
1.8 2.0 2.5 2.0 2.2 2.9
slew rate
2.5 3.0 3.0 3.0 3.0 3.0
settling time (to 0.1%) 12 12 12 12 12 15
Pins 2 and 8 are used to adjust the sup-
ply current or to adjust the offset voltage
(see text). These pins are normally left
unconnected.
REV. 1A February 2001
1
2
3
4
5
6
