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 TYP.@ 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