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AD9631AR-REEL7
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Product Detailed Parameters
- Description：IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Bulk
- Amplifier Type：Voltage Feedback
- Number of Circuits：1
- Output Type：-
- Slew Rate：1300V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：2 µA
- Voltage - Input Offset：3 mV
- Current - Supply：17mA
- Current - Output / Channel：70 mA
- Voltage - Supply Span (Min)：6 V
- Voltage - Supply Span (Max)：12 V
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- -3db Bandwidth：320 MHz
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Overview
The AD9631AR-REEL7 is a wide bandwidth, voltage feedback operational amplifier from Analog Devices. It features a small-signal bandwidth of 320 MHz and a large-signal bandwidth of 175 MHz at a gain of +1. The device operates on ±3 V to ±5 V supplies with a quiescent current of 17 mA. Key performance metrics include a slew rate of 1300 V/µs, settling time of 16 ns to 0.01%, and ultralow distortion with an SFDR of −113 dBc at 1 MHz. It is unity gain stable and housed in an 8-lead SOIC package.
Feature Summary
- Voltage feedback architecture providing predictable design characteristics and high phase margin.
- Ultralow harmonic distortion and low spectral noise density for high-fidelity signal processing.
- High-speed transient response with fast settling times suitable for precision applications.
- Operates reliably within the industrial temperature range of -40°C to +85°C.
Applications
- ADC input driver
- Differential amplifiers
- IF/RF amplifiers
- Pulse amplifiers
- Professional video
Procurement Notes
Verify the specific ordering suffix REEL7 corresponds to tape-and-reel packaging when sourcing. Confirm the component grade matches the required industrial operating temperature range. Ensure the supply voltage limits and power dissipation constraints are respected during integration to maintain device reliability and prevent thermal overstress.
Selection Notes
Select this component for designs requiring high bandwidth and low distortion in a voltage feedback configuration. It serves as a direct performance upgrade over previous generations like the AD9621. Consider the 140 Ω recommended feedback resistor value for optimal dynamic performance at unity gain. Evaluate PCB layout requirements carefully due to the high-frequency operation capabilities.
Part Context
This part belongs to the AD9631/AD9632 family of ultralow distortion, wide bandwidth voltage feedback op amps. The AD9631 variant is specifically designed for unity gain stability, distinguishing it from the AD9632 which requires gains of 2 or greater. The series combines attributes of both current and voltage feedback amplifiers for superior pulse response.
Replacement Considerations
The AD9621 is documented as a predecessor model with improved performance in the AD9631 series. Verify pin compatibility and electrical specifications before substitution. No other official substitute part numbers are confirmed in the provided documentation.
FAQ
Is the AD9631AR-REEL7 stable at unity gain?
Yes, the AD9631 is explicitly specified as unity gain stable.
What is the recommended feedback resistor value for optimum performance?
For the AD9631 at a gain of +1, a feedback resistor (RF) of 140 Ω provides the best combination of wide bandwidth, low parasitic peaking, and fast settling time.
