HA-2420 Datasheet, PDF (1/12 Pages) Intersil Corporation – 3.2μs Sample and Hold Amplifiers

®
Data Sheet
HA-2420, HA-2425
November 19, 2004
FN2856.6
3.2µs Sample and Hold Amplifiers
The HA-2420 and HA-2425 is a monolithic circuit consisting
of a high performance operational amplifier with its output in
series with an ultra-low leakage analog switch and JFET
input unity gain amplifier.
With an external hold capacitor connected to the switch
output, a versatile, high performance sample-and-hold or
track-and-hold circuit is formed. When the switch is closed,
the device behaves as an operational amplifier, and any of
the standard op amp feedback networks may be connected
around the device to control gain, frequency response, etc.
When the switch is opened the output will remain at its last
level.
Performance as a sample-and-hold compares very favorably
with other monolithic, hybrid, modular, and discrete circuits.
Accuracy to better than 0.01% is achievable over the
temperature range. Fast acquisition is coupled with superior
droop characteristics, even at high temperatures. High slew
rate, wide bandwidth, and low acquisition time produce
excellent dynamic characteristics. The ability to operate at
gains greater than 1 frequently eliminates the need for
external scaling amplifiers.
The device may also be used as a versatile operational
amplifier with a gated output for applications such as analog
switches, peak holding circuits, etc. For more information,
please see Application Note AN517..
Ordering Information
PART NUMBER
HA1-2420-2
HA3-2425-5
TEMP.
RANGE (^oC)
PACKAGE
-55 to 125 14 Ld CERDIP
0 to 75 14 Ld PDIP
PKG.
DWG. #
F14.3
E14.3
Features
• Maximum Acquisition Time
- 10V Step to 0.1% . . . . . . . . . . . . . . . . . . . . . 4µs (Max)
- 10V Step to 0.01% . . . . . . . . . . . . . . . . . . . . 6µs (Max)
• Low Droop Rate (C_H = 1000pF). . . . . . . . . . 5µV/ms (Typ)
• Gain Bandwidth Product . . . . . . . . . . . . . . . 2.5MHz (Typ)
• Low Effective Aperture Delay Time . . . . . . . . . 30ns (Typ)
• TTL Compatible Control Input
• ±12V to ±15V Operation
Applications
• 12-Bit Data Acquisition
• Digital to Analog Deglitcher
• Auto Zero Systems
• Peak Detector
• Gated Operational Amplifier
Pinout
HA-2420 (CERDIP)
HA-2425 (PDIP)
TOP VIEW
-IN 1
+IN 2
OFFSET ADJ. 3
OFFSET ADJ. 4
V- 5
NC 6
OUTPUT 7
14 S/H CONTROL
13 GND
12 NC
11 HOLD CAP.
10 NC
9 V+
8 NC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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