kh205 Fairchild Semiconductor, kh205 Datasheet

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kh205

Manufacturer Part Number
kh205
Description
Overdrive-protected Wideband Op Amp
Manufacturer
Fairchild Semiconductor
Datasheet
KH205
Overdrive-Protected Wideband Op Amp
Features
s
s
s
s
s
s
s
Applications
s
s
s
s
s
s
s
-3dB bandwidth of 170MHz
0.1% settling in 22ns
Complete overdrive protection
Low power: 570mW (190mW at ±5V)
3MΩ input resistance
Output may be current limited
Direct replacement for CLC205
Fast, precision A/D conversion
Automatic test equipment
Input/output amplifiers
Photodiode, CCD preamps
IF processors
High-speed modems, radios
Line drivers
Pin 8 provides access to a 2000Ω feed-
back resistor which can be connected to
the output or left open if an external feed-
back resistor is desired.
Non-Inverting
Connected
Large Signal Pulse Response
Inverting
Input
Input
bias ground
Not
Case and
ground
Case
NC
V+
V-
Bottom View
6
5
4
Time (5ns/div)
GND
GND
7
3
A
A
Not Connected
2000Ω
v
v
= +20
= -20
Feedback
Internal
+
-
NC
R
8
2
f
+V
-V
9
1
CC
CC
6
6
+V
-V
10
11
12
CC
Supply
Voltage
CC
Supply
Voltage
V
o
Collector
Supply
Collector
Supply
Output
General Description
The KH205 is a wideband overdrive-protected opera-
tional amplifier designed for applications needing
both speed and low power operation.
well-established current feedback architecture, the
KH205 exhibits performance far beyond that of
conventional voltage feedback op amps. For example,
the KH205 has a bandwidth of 170MHz at a gain of
+20 and settles to 0.1% in 22ns. Plus, the KH205 has
a combination of important features not found in
other high-speed op amps.
For example, the KH205 has been designed to consume
little power – 570mW at ±15V supplies. The result is
lower power supply requirements and less system-
level heat dissipation. In addition, the device can be
operated on supply voltages as low as ±5V for even
lower power dissipation.
Complete overdrive protection has been designed
into the part. This is critical for applications, such as
ATE and instrumentation, which require protection
from signal levels high enough to cause saturation of
the amplifier. This feature allows the output of the
op amp to be protected against short circuits using
techniques developed for low-speed op amps. With
this capability, even the fastest signal sources can
feature effective short circuit protection.
The KH205 is constructed using thin film resistor/bipolar
transistor technology, and is available in the following
versions:
KH205AI
KH205AK
KH205AM
KH205HXC
KH205HXA
Typical Performance
Parameter
-3dB bandwidth
rise time
slew rate
settling time (to 0.1%)
-25°C to +85°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
220 170 80 220 130 80
1.7 2.2 4.7 1.7 2.9 4.7
2.4 2.4 2.4 2.4 2.4 2.4
+7 +20 +50 -1
22
22
Gain Setting
20
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#: 5962-9083501HXC
SMD#: 5962-9083501HXA
www.fairchildsemi.com
21
REV. 1A February 2001
-20 -50
20
19
Utilizing a
Units
MHz
V/ns
ns
ns

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kh205 Summary of contents

Page 1

... KH205 exhibits performance far beyond that of conventional voltage feedback op amps. For example, the KH205 has a bandwidth of 170MHz at a gain of +20 and settles to 0.1% in 22ns. Plus, the KH205 has a combination of important features not found in other high-speed op amps. For example, the KH205 has been designed to consume little power – ...

Page 2

... DATA SHEET KH205 Electrical Characteristics PARAMETERS Ambient Temperature Ambient Temperature FREQUENCY DOMAIN RESPONSE -3dB bandwidth ¦ large-signal bandwidth gain flatness peaking ¦ peaking ¦ rolloff ¦ group delay linear phase deviation TIME DOMAIN RESPONSE rise and fall time settling time to 0.1% to 0.05% ...

Page 3

... KH205 KH205 Typical Performance Characteristics Non-Inverting Frequency Response Gain +50 v Phase + + 100 120 140 160 180 200 Frequency (MHz) Large Signal Gain and Phase V = 10V o pp Gain Phase ...

Page 4

... Lowers pulse response overshoot s Affects frequency response phase linearity s Overdrive Protection Unlike most other high-speed op amps, the KH205 is not damaged by saturation caused by overdriving input signals (where V x gain > max limits the current at the inverting input when the output is saturated (see the inverting input current self limit specification) ...

Page 5

... Figure is for the Network Inside this Box.) Driving Cables and Capacitive Loads When driving cables, double termination is used to prevent reflections. For capacitive load applications, a small series resistor at the output of the KH205 will improve stability and settling performance. Transmission Line Matching One method for matching the characteristic impedance ...

Page 6

... Minimize all trace lengths to reduce series s inductances. Use flush-mount printed circuit board pins s for prototyping, never use high profile DIP sockets. Evaluation PC boards (part number 730008 for inverting, 730009 for non-inverting) for the KH205 are available to aid in device testing. KH205 REV. 1A February 2001 ...

Page 7

... DATA SHEET KH205 Package Dimensions φ SYMBOL A φb φD φ α DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICES TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS ...

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