HA-2420, HA-2425
November 1996
3.2碌s Sample and Hold Ampli鏗乪rs
Description
The HA-2420 and HA-2425 is a monolithic circuit consisting
of a high performance operational ampli鏗乪r with its output in
series with an ultra-low leakage analog switch and JFET
input unity gain ampli鏗乪r.
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 ampli鏗乪r, 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 ampli鏗乪rs.
PKG.
NO.
F14.3
F14.3
E14.3
N20.35
M14.15
Features
鈥?Maximum Acquisition Time
- 10V Step to 0.1%. . . . . . . . . . . . . . . . . . . . . 4碌s (Max)
- 10V Step to 0.01%. . . . . . . . . . . . . . . . . . . . 6碌s (Max)
鈥?Low Droop Rate (C
H
= 1000pF). . . . . . . . 5碌V/ms (Typ)
鈥?Gain Bandwidth Product . . . . . . . . . . . . . 2.5MHz (Typ)
鈥?Low Effective Aperture Delay Time . . . . . . . 30ns (Typ)
鈥?TTL Compatible Control Input
鈥?/div>
鹵12V
to
鹵15V
Operation
Applications
鈥?12-Bit Data Acquisition
鈥?Digital to Analog Deglitcher
鈥?Auto Zero Systems
鈥?Peak Detector
鈥?Gated Operational Ampli鏗乪r
Ordering Information
PART NUMBER
HA1-2420-2
HA1-2425-5
HA3-2425-5
HA4P2425-5
HA9P2425-5
TEMP.
RANGE (
o
C)
-55 to 125
0 to 75
0 to 75
0 to 75
0 to 75
PACKAGE
14 Ld CERDIP
14 Ld CERDIP
14 Ld PDIP
20 Ld PLCC
14 Ld SOIC
The device may also be used as a versatile operational
ampli鏗乪r with a gated output for applications such as analog
switches, peak holding circuits, etc. For more information,
please see Application Note AN517.
The MIL-STD-883 data sheet for this device is available on
request.
Pinouts
HA-2420 (CERDIP)
HA-2425 (CERDIP, PDIP, SOIC)
TOP VIEW
+IN
-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
OFFSET ADJ. 4
NC 5
OFFSET ADJ. 6
NC 7
V- 8
9
NC
10 11 12 13
OUT
NC
NC
V+
18 NC
17 NC
16 HOLD CAP.
15 NC
14 NC
HA-2425
(PLCC)
TOP VIEW
NC
GND
S/H
-IN
2
3
1
20 19
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright 漏 Intersil Corporation 1999
File Number
2856.2
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