AM-500 Series

AM-500 Series
Ultra-Fast Operational Amplifiers
PRODUCT OVERVIEW
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 106, 30 megohm input impedance, 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
FEATURES
„ 200 Nanoseconds settling to 0.01%
„ 100V/Microsecond slew rate
„ 100 MHz Minimum gain-bandwidth
„ 106 Open loop gain
„ 1 Microvolt/°C drift
„ ±50 mA Output current
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.
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.
FUNCTIONAL BLOCK DIAGRAM
NC
NC
NC
-IN
+IN
-VS
NC
1
2
3
4
5
6
7
–
+
14
13
12
11
10
9
8
NC
NC
NC
+VS
OUT
NC
COM.
Figure 1. Functional Block Diagram
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
26 Jun 2015
MDA_AM-500.B03 Page 1 of 4
AM-500 Series
Ultra-Fast Operational Amplifiers
FUNCTIONAL SPECIFICATIONS
(Typical at +25°C, ±15V dc supply, unless otherwise noted.)
INPUT CHARACTERISTICS
Common Mode Voltage Range ➀
Maximum Input Voltage, no damage
Differential Input Impedance
Input Bias Current
Input Offset Current
Input Offset Voltage
OUTPUT CHARACTERISTICS
Output Voltage
Output Current, S.C. protected
Stable Capacitative Load
Output Impedance
PERFORMANCE
DC Open Loop Gain
Input Offset Voltage Drift
0°C to + 70°C
-55°C to +125°C
Input Bias Current Drift
0°C to + 70°C
-55°C to +125°C
Input Voltage Noise ➁
0.01 Hz to 1 Hz
100 Hz to 10 kHz
1 Hz to 10 MHz
Input Current Noise ➃
0.01Hz to 10Hz
100Hz to 10kHz
10Hz to 1MHz
Power Supply Rejection Ratio
DYNAMIC CHARACTERISTICS
Gain Bandwidth Product
Slew Rate, positive going
Slew Rate, negative going
Full Power Frequency
(20V peak-to-peak)
Settling Time
10V step to 1%3
10VsteptoO.1%3
10VsteptoO.01%3
Overload Recovery Time
POWER REQUIREMENTS
Voltage, rated performance
Voltage, operating
Quiescent Current
MIN.
—
—
3
—
—
—
TYP.
±5
±18
30
1
0.5
0.5
MAX.
—
—
—
4
8
3
UNITS
Volts
Volts
Meg
nA
nA
mV
±10
±25
—
—
—
±50
100
25
—
—
—
—
Volts
mA
pF
Ω
106
—
V/V
1
5
5
10
μV/°C
μV/°C
—
—
—
-20
—
doubles every 10°C
pA/°C
PHYSICAL/ENVIRONMENTAL
Operating Temp. Range
AM-500GC
AM-500MC
AM-500MM, MM-QL
Storage Temp. Range
Package Type
Pins
Weight
MIN.
0
0
–55
–55
TYP.
MAX.
—
+70
—
+70
—
+125
—
+125
14-pin ceramic
0.010xO.018˝ Kovar
0.09 ounces (2.5 grams)
UNITS
°C
°C
°C
°C
TECHNICAL NOTES
1. The circuit design shows the connection of the AM-500 series for fast
settling operation with a closed loop gain of -1. It can be used for fast
settling at closed loop gains up to -10. The equivalent resistance seen
by the summing junction should be 500 ohms or less. For gains larger
than - 1 use an input resistor of 500 ohms and pick a feedback resistor
for the required closed loop gain (1k for -2, 1.5k for -3, etc.).
2. A small feedback capacitor should be used across the feedback resistor.
Determine C in nanofarads from the following formula:
—
—
—
15
1.6
5.2
—
—
—
μVp-p
μVrms
μVrms
—
—
—
80
5
1
20
—
25
5
100
—
μVrms
μVrms
μVrms
dB
100
—
—
130
1000
1800
—
—
—
MHz
V/μs
V/μs
—
16
—
MHz
—
—
—
—
70
100
—
10
—
—
200
—
ns
ns
ns
μs
—
± 10
—
±15
—
22
—
± 18
37
Vdc
Vdc
mA
where G is closed loop gain and Rf is in kilohms.
1 + |G|
C=
0.816Rf
3. Summing point leads must be kept as short as possible. Input and
feedback resistors should be soldered close to the body of the resistor
directly to the summing point (pin 4). Summing point capacitance to
ground must be kept very low.
4. Low output impedance power supplies should be used with 1 μF
tantalum bypassing capacitors at the amplifier supply terminals. There
are internal 0.03 μF ceramic capacitors in the amplifier.
5. Although these amplifiers are inverting mode only, a dc voltage in the
range of ± 5V may be applied to the positive input terminal for offsetting
the amplifier.
6. For interrupted power applications, apply power to the AM-500 three (3)
seconds before operating the device.
Footnotes:
➀ dc only
➁ - 3 dB Single-pole bandwidth
➂ 1k Input and feedback resistors, 2.4 pF feedback capacitor
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
26 Jun 2015
MDA_AM-500.B03 Page 2 of 4
AM-500 Series
Ultra-Fast Operational Amplifiers
+15V dc
C
KEEP THESE
LEADS AS SHORT
AS POSSIBLE
2.4pF
1K (Rf)
RFEEDBACK
1μF TANTALUM
+
1K
4
11
–
INPUT
RIN
10
+15V
AM-500
5
+
OUTPUT
6
750K
ZERO
ADJ.
(±10 mV)
1μF TANTALUM
+
20K
500
-15V dc
-15V
Figure 2. Connection for Fast Settling with Gain of -1
BIAS CURRENT (TYPICAL)
100 nA
10 nA
−20pA/°C
1 nA [email protected]
25°C
DOUBLES
EVERY 10°C
1 nA
+CURRENT
−CURRENT
100 pA
-50
-25
0
+25
+50
+75
+100
+125
TEMPERATURE (°C)
Figure 3. Input Bias Current vs. Temperature
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
26 Jun 2015
MDA_AM-500.B03 Page 3 of 4
AM-500 Series
Ultra-Fast Operational Amplifiers
MECHANICAL DIMENSIONS - INCHES (mm)
0.500 MAX.
(12.7)
0.200 (5.1) MAX.
0.150 MIN.
(3.8)
0.010 X 0.018 KOVAR
7
8
BOTTOM
VIEW
DOT ON TOP
REFERENCES
PIN 1
1
0.700
6 SPACES
AT 0.100 EA.
(2.5)
0.805 MAX.
(20.3)
0.100
14
0
0.300
(7.6)
0.100
(2.5)
NOTE: PINS HAVE 0.025 INCH STANDOFF FROM CASE
ORDERING INFORMATION
MODEL NUMBER
OPERATING
TEMP. RANGE
PACKAGE SEAL
AM-500GC
0 TO +70°C
Epoxy
ROHS
No
AM-500MC
0 TO +70°C
Hermetic
No
AM-500MM
-55 TO +125°C
Hermetic
No
AM-500MM-QL
-55 TO +125°C
Hermetic
No
AM-500MC-C
0 TO +70°C
Hermetic
Yes
AM-500MM-C
-55 TO +125°C
Hermetic
Yes
AM-500MM-QL-C
-55 TO +125°C
Hermetic
Yes
For devices compliant to MIL-STD-883, consult the factory.
DATEL is a registered trademark of DATEL, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
DATEL, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information
contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of
licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice.
ITAR and ISO 9001/14001 REGISTERED
© 2015 DATEL, Inc.
www.datel.com • e-mail: [email protected]
26 Jun 2015
MDA_AM-500.B03 Page 4 of 4