AM-1435 Ultra-Fast, Wideband Operational Amplifiers PRODUCT OVERVIEW FEATURES 70 nanosecond settling to ±0.01% 1GHz gain bandwidth product 100dB open loop gain DATEL ’s AM-1435 is an ultrafast settling, wideband operational amplifier. Utilizing precision thin-film hybrid construction and differential input operational amplifier design techniques, the AM-1435 achieves a settling time of only 70 nanoseconds for a 10V step to ±0.01% accuracy. High-speed performance is optimized with high open-loop gain, flat frequency response beyond 10kHz, and a roll-off of 6dB/octave to beyond 100MHz. Typically, gain bandwidth product is 1GHz, and slew rate is ±300V/microsecond. AM-1435’s dc characteristics include a dc open loop gain of 100dB, 1MΩ input impedance, and an initial input offset voltage of only ±2mV. Input offset voltage drift is typically ±5μV/°C. Also featured is a minimum common mode rejection ratio of 80dB and full power frequency of 8MHz. The AM-1435 is designed specifically for applications requiring high accuracy in the amplification of complex wideband waveforms. Such applications include radar and sonar signal processing, video instrumentation, ultrafast A/D and D/A converters and sample-hold amplifiers. Power supply requirements are ±15V at 30mA maximum quiescent current. Models are specified for operation over the commercial (0 to +70°C), –40 to +100°C and military (–55 to +125°C) temperature ranges. A high-reliability version manufactured and screened to DATEL ’s QL screening program is also available. The package is a 14-pin ceramic DIP. PIN FUNCTION 1 OPTIONAL BYPASS CAPACITOR 2 OUTPUT 3 COMPENSATION CAPACITOR 4 +15V SUPPLY (+VS) 5 OFFSET ADJUST 6 OFFSET ADJUST 7 –INPUT 8 +INPUT 9 N.C. 10 N.C. 11 N.C. 80dB minimum CMRR 12 –15V SUPPLY (–VS) –55 to +125°C operation 13 OUTPUT CURRENT SINK Industry standard 14 COMMON FUNCTIONAL BLOCK DIAGRAM OFFSET ADJUST COMPENSATION CAPACITOR 5 6 3 +15V SUPPLY 4 1 OPTIONAL BYPASS CAPACITOR –INPUT 7 +INPUT 8 2 OUTPUT + @14mA 13 OUTPUT CURRENT SINK 14 COMMON 12 –15V SUPPLY 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] MDA_AM-1435.C02 Page 1 of 4 AM-1435 Ultra-Fast, Wideband Operational Amplifiers FUNCTIONAL SPECIFICATIONS (Typical at +25°C and ±15V supplies, unless otherwise noted.) INPUT Differential Between Inputs Common Mode Voltage Range ➀ Common Mode Rejection Ratio 1MHz DC Input Impedance Common Mode Differential Mode Input Bias Current Input Offset Current Input Offset Voltage ➁ PERFORMANCE DC Open Loop Gain ➂ Input Offset Voltage Drift Input Bias Current Drift Input Offset Current Drift Input Voltage Noise 0.01Hz to 10Hz 100Hz to 10kHz 10Hz to 1MHz Input Current Noise ➃ 0.01Hz to 10Hz 100Hz to 10kHz 10Hz to 1MHz Power Supply Rejection Ratio DYNAMIC CHARACTERISTICS Gain Bandwidth Product Unity Gain Bandwidth Full Power Frequency ➄ Settling Time 10V to ±0.025% ➅ 10V to ±0.01% ➅ 5V to ±1.0% 5V to ±0.1% 1V to ±1.0% 1V to ±0.1% Slew Rate ➄ Overshoot Propagation Delay Rise Time (10V step) Overload Recovery Time OUTPUT Output Voltage ➂ Output Current ➂ Stable Capacitative Load ➆ POWER REQUIREMENTS Rated Supply Voltages Quiescent Current PHYSICAL/ENVIRONMENTAL Operating Temp. Range, Case AM-1435MC AM-1435ME AM-1435MM, MM-QL ➇ Storage Temp. Range Package Type MIN. TYP. MAX. UNITS MIN. — ±7 TYP. — ±8.5 MAX. ±4 — UNITS Volts Volts — 73 70 100 — — dB dB — — — — — 1 ❘❘ 2 2.5 ❘❘ 2 ±20 ±0.3 ±2 — — 40 — ±5 MΩ ❘❘ pF kΩ ❘❘ pF μA μA mV 88 — — — 100 ±5 ±50 ±2 — ±25 ±100 — dB μV/°C nA/°C nA/°C — — — 15 1.6 5.2 — — — μVp-p μVrms μVrms — — — — 2.5 2.5 3.5 ±0.15 — — — — nAp-p nArms nArms mV/V 700 — 8 1000 150 10 — — — MHz MHz MHz 4. A 1μF bypass capacitor (C4) connected from OPTIONAL BYPASS CAPACITOR (pin 1) to COMMON (pin 14) may be required to inhibit output oscillation when driving capacitive loads. — — — — — — ±250 — — — — 60 70 25 40 10 20 ±300 1 5 40 50 — — — 60 — — — — — — — ns ns ns ns ns ns V/μs % ns ns ns 5. To ensure stable operation when the noise gain is less than 10, a 2pF compensation capacitor (C1) must be connected between pins 3 and 7. The value of the compensation capacitor may be application sensitive. ±5 ±10 — ±7 ±14 1000 — — — Volts mA pF ±12 — ±15 ±22 ±16 ±30 Volts mA Footnotes: ➀ Specified for dc linear operation. Common mode voltage range prior to fault condition is ±10V maximum. 0 — +70 °C –40 — +100 °C –55 — +125 °C –65 — +150 °C 14-pin, metal-sealed, ceramic DIP TECHNICAL NOTES 1. The use of good high-frequency circuit board layout techniques is required for rated performance. The extensive use of a ground plane for all common connections is recommended. Lead lengths should be kept to a minimum with point-to-point connections wired directly to the amplifier pins. 1μF tantalum bypass capacitors should be used at the ±15V supply pins. 2. Operation of the AM-1435MM and MM-QL over the +85 to +125°C temperature range requires additional thermal dissipation to achieve rated performance. Use of an 18°C/W heat sink is recommended. 3. No input protection is provided so as to maximize frequency response. As a result, several precautions must be observed. Do not apply the positive supply voltage before the negative supply. Do not apply signals to either input prior to power-up. If frequency response is not critical, installation of an external input-protection circuit is recommended. 6. The AM-1435 is a prime choice as a current-to-voltage converter due to its excellent EOS and IOS temperature coefficient ratings. Input bias currents are easily compensated by adding a resistor from pin 8 to ground, which is equal to the parallel combination of the feedback resistor and input impedance. ABSOLUTE MAXIMUM RATINGS, ALL MODELS Positive Supply, Pin 4 +18V Negative Supply, Pin 12 –18V Lead Temperature (soldering, 10s) 300°C ➁ Adjustable to zero. ➂ RL = 500Ω. ➃ Referred to input. ➄ C1 = 0.5pF. ➅ C1 = 1pF. ➆ C1 = 3pF, noise gain >2. ➇ Requires 18°C/W heat sink above +85°C. DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: [email protected] MDA_AM-1435.C02 Page 2 of 4 AM-1435 Ultra-Fast, Wideband Operational Amplifiers +15V R4 1kW + C2 1µF R3 2pF 4 1kW C1 R1 5 3 – INPUT 6 7 1kW OFFSET ADJUST (OPT.) 2 AM-1435 OUTPUT 13 R2 1 + 8 500W 14 + C4 (OPT.) 1µF 12 + C3 1µF –15V Figure 2. Typical Connection Diagram TYPICAL CONNECTION AND COMPENSATION The typical connection diagram (above) shows the AM-1435 in a unitygain inverting configuration. When used in any conventional operationalamplifier configuration, the AM-1435 (as a non-inverting amplifier) requires a noise gain of at least two (noise gain = 1 + R4/R1). capacitive loads to prevent oscillation of the output stage. Operation of the AM-1435 at low impedances requires careful attention to include the feedback resistor as a part of the total output load. The 2pF compensation capacitor, C1, at pin 3 is required for stable operation when the noise gain is less than 10. Compensation for bias current is provided by R2 and its value is determined by the formula: (R1) x (R4) R2 = R4compensation capacitor C4 The offset adjust potentiometer R3 R1 and+the are optional. Note, however, that C4 should be implemented when driving 100 0° 40° GAIN 60 60° 40 100° PHASE ANGLE 20 140° 0 180° -20 GAIN 100 180° 80 140° 60 100° 40 60° 20 20° 0 PHASE ANGLE (DEGREES) 80 OPEN LOOP VOLTAGE GAIN (dB) 120 PHASE ANGLE (DEGREES) OPEN LOOP VOLTAGE GAIN (dB) 120 0° PHASE ANGLE -20 100 200 500 1k 10k 100k 1M 10M 100M 100 200 500 1k 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz) Figure 3. Gain and Phase vs. Frequency (Uncompensated) Figure 4. Gain and Phase vs. Frequency (Compensated 2pF) DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • 100M e-mail: [email protected] MDA_AM-1435.C02 Page 3 of 4 AM-1435 Ultra-Fast, Wideband Operational Amplifiers PERFORMANCE CHARTS 100 120 110 90 100 80 PSRR (dB) CMRR (dB) 90 80 70 60 70 60 50 40 50 30 40 20 1k 2k 5k 10k 100k 1M 10M 10 100M 20 50 100 1k 10k 100k 1M FREQUENCY (Hz) FREQUENCY (Hz) Figure 5. CMRR vs. Frequency Figure 6. PSRR vs. Frequency MECHANICAL DIMENSIONS - INCHES (mm) 14-PIN DIP 0.805 MAX. (20.45) 14 8 1 7 0.500 MAX. (12.70) Dimension Tolerances (unless otherwise indicated): 2 place decimal (.XX) ±0.010 (±0.254) 3 place decimal (.XXX) ±0.005 (±0.127) Lead Material: Kovar alloy Lead Finish: 50 microinches (minimum) gold plating over 100 microinches (nominal) nickel plating 0.100 TYP. (2.540) 0.195 MAX. (4.953) 0.600 ±0.005 (15.240) 0.200 MAX. (5.080) 0.010 ±0.002 (0.254) 0.160 MAX. (4.064) SEATING PLANE 0.025 ±0.010 (0.635) 0.100 (2.540) 0.100 (2.540) 0.300 ±0.010 (7.620) 0.018 ±0.002 (0.457) ORDERING INFORMATION: NON-ROHS MODELS ORDERING INFORMATION: ROHS MODELS OPERATING TEMP. RANGE MODEL NUMBER AM-1435MC 0 to +70°C AM-1435MC-C 0 to +70°C AM-1435ME –40 to +100°C AM-1435ME-C –40 to +100°C AM-1435MM –55 to +125°C AM-1435MM-C –55 to +125°C AM-1435MM-QL –55 to +125°C AM-1435MM-QL-C –55 to +125°C MODEL NUMBER DATEL is a registered trademark of DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA OPERATING TEMP. RANGE 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] MDA_AM-1435.C02 Page 4 of 4