
Figure 1. Functional Block Diagram
+
–
1
2
3
4
5
6
7
14
13
12
11
10
9
8
NC
NC
NC
-IN
+IN
-VS
NC
NC
NC
NC
+VS
OUT
NC
COM.
FEATURES
200 Nanoseconds settling to 0.01%
100V/Microsecond slew rate
100 MHz Minimum gain-bandwidth
10
6
Open loop gain
1 Microvolt/°C drift
±50 mA Output current
The AM-500 series amplifiers are ultra-fast
settling operational amplifiers for use in inverting
applications. A unique feedforward amplifier design
combines the characteristics of a low drift dc
amplifier with those of a very fast AC amplifier. For
optimum fast settling performance, this amplifier
has an open loop gain roll-off of 6 dB per octave
to beyond 100 MHz. Miniature thin-film hybrid
construction permits an optimum combination of
semiconductor devices and minimum lead lengths
to realize the amplifier circuitry. Applications
for the AM-500 Series include fast integrators,
sample-holds, fast waveform drivers, and fast D/A
converter output amplifiers.
Output settling time is 200 nanoseconds
maximum to 0.01% for a 10 dc volt step change.
Slew rate is 1000V/microsecond for positive output
transitions and 1800V/microsecond for negative
transitions. This high slew rate permits undistorted
reproduction of a full load, 20V peak-to-peak
sinewave out to 16 MHz. Gain bandwidth product is
100 MHz minimum.
AM-500 series dc characteristics include a dc
open loop gain of 10
6
, 30 megohm input imped-
ance, and 1 nanoampere bias current. Input offset
voltage is ±0.5 mV and input offset voltage drift
is 1 microvolt/°C. Although these amplifiers do
not operate differentially, a dc offset voltage in
the range of ±5V dc can be applied to the positive
input terminal.
Power supply requirement is ±15V dc at 22 mA
quiescent current. The amplifiers will operate over
a supply range of ±10V to ±18V dc. Output current
capability is ±50 mA with output short circuit
protection. Three basic versions are available:
AM-500GC and AM-500MC for 0°C to + 10°C, and
the AM-500MM for -55°C to +125°C. The device
package is a 14-pin ceramic DIP.
PRODUCT OVERVIEW
FUNCTIONAL BLOCK DIAGRAM
PIN FUNCTION
1
N.C.
2
N.C.
3
N.C.
4
-INPUT
5
+INPUT
6
-SUPPLY
7
N.C.
8
COMMON
9
N.C.
10 OUTPUT
11 + SUPPLY
12 N.C.
13 N.C.
14 N.C.
AM-500 Series
Ultra-Fast Operational Amplifiers
DATEL
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA Tel: (508) 339-3000 www.datel.com e-mail: help@datel.com
01 Apr 2011 MDA_AM-500.B02
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