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參數(shù)資料
| 型號(hào)： | 5962-8959401HXC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 緩沖放大器 |
| 英文描述： | BUFFER AMPLIFIER, MBCY12 |
| 封裝： | TO-8, 12 PIN |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 106K |
| 代理商： | 5962-8959401HXC |
Features
s
165MHz closed-loop – -3dB bandwidth
s
15ns settling to 0.05%
s
1mV input offset voltage, 10
V/°C drift
s
100mA output current
s
Excellent AC and DC linearity
s
Direct replacement for CLC231
Applications
s
Driving flash A/D converters
s
Precision line driving
(a gain of 2 cancels matched-line losses)
s
DAC current-to-voltage conversion
s Low-power, high-speed applications (50mW @ ±5V)
General Description
The KH231 Buffer/Amplifier is a wideband operational
amplifier designed specifically for high-speed, low-
gain applications. The KH231 is based on a current
feedback op amp topology-a unique design that both
eliminates the gain-bandwidth tradeoff and permits
unprecedented high-speed performance. (See table below.)
The KH231 Buffer/Amplifier is the ideal design alter-
native to low precision open-loop buffers and oscillation-
prone conventional op amps. The KH231 offers precise
gains from ±1.000 to ±-5.000 and linearity that is a
true 0.1%-even for demanding 50
loads. Open-loop
buffers, on the other hand, offer a nominal gain of
0.95 ±0.03 and a linearity of only 3% for typical loads.
A buffer’s settling time may look impressive but it is
usually specified at unrealistically large load resis-
tances or when the effects of thermal tail are not
included; the KH231 Buffer/Amplifier settles to 0.05%
in 15ns-while driving a 100
load.
Offsets and drifts, usually a low priority in conven-
tional high-speed op amp designs, were not ignored
in the KH231; the input offset voltage is typically 1mV
and input offset voltage drift is only 10
V/°C. The
KH231 is stable and oscillation-free across the entire
gain range and since it’s internally compensated, the
user is saved the trouble of designing external com-
pensation networks and having to “tweak” them in
production. The absence of a gain-bandwidth trade-
off in the KH231 allows performance to be predicted
easily; the table below shows how the bandwidth is
affected very little by changing the gain setting.
The KH231 is constructed using thin film resistor/bipolar
transistor technology, and is available in the following
versions:
The KH231 is constructed using thin film resistor/bipolar
transistor technology, and available in these versions:
KH231AI
-25°C to +85°C
12-pin TO-8 can
KH231AK
-55°C to +125°C
12-pin TO-8 can, features
burn-in & hermetic testing
KH231AM
-55°C to +125°C
12-pin TO-8 can,
environmentally
screened and electrically
tested to MIL-STD-883
KH231HXC
-55°C to +125°C
SMD#: 5962-8959401HXC
KH231HXA
-55°C to +125°C
SMD#: 5962-8959401HXA
KH231
Fast Settling, Wideband Buffer/Amplifier (Av = ±1 to ±5)
www.fairchildsemi.com
REV. 1A February 2001
Small Signal Pulse Response
Output
Voltage
(400mV/div)
Time (5ns/div)
Av = -2
Av = 2
Supply
Voltage
8
Adjust
7
GND
9
-V
CC
2
Adjust
3
GND
1
+V
CC
6
V+
5
V-
4
NC
10
-V
CC
V
o
+V
CC
11
12
4
Collector
Supply
Output
Collector
Supply
Voltage
ICC Adjust
Case
ground
Non-Inverting
Input
Inverting
Input
Not
Connected
Case
ground
+
-
Bottom View
Pins 2 and 8 are used to adjust the supply current or to adjust the off-
set voltage (see text). These pins are normally left unconnected.
Typical Performance
Gain Setting
Parameter
12
5
-1
-2
-5
Units
-3dB bandwidth
180 165 130 165 150 115
MHz
rise time (2V)
1.8
2.0
2.5 2.0
2.2 2.9
ns
slew rate
2.5
3.0
3.0 3.0
V/ns
settling time (to 0.1%)
12
15
ns
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