Part A
AD711JN
Компания Analog Devices Inc.
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- 5279 ПКС
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Replacement verdict
Not a drop-in replacement
The AD711JN and AD7111LN are not functionally interchangeable. Although both are precision operational amplifiers from Analog Devices, the AD7111LN is a military-grade device with a different package and temperature range, while the AD711JN is a commercial-grade part. The differences in package type, operating temperature range, and grade screening mean the AD7111LN cannot serve as a direct drop-in substitute for the AD711JN in commercial designs, and vice versa.
Different package type
Different temperature range
Different grade screening
Different qualification level
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD711JN | AD7111LN | Why it matters |
|---|---|---|---|
| Function / Device Type | Precision operational amplifier (op amp) | 8-bit multiplying digital-to-analog converter (DAC) | These are fundamentally different device classes; one is an analog signal amplifier and the other is a digital-to-analog converter, so they are not functionally interchangeable in a circuit. |
| Package | 8-lead PDIP (N) | 16-lead PDIP (N) | Different pin counts and pinouts mean the parts cannot be dropped into the same PCB footprint. |
| Number of Pins | 8 | 16 | Pin count determines socket and footprint compatibility; mismatched pin counts prevent direct substitution. |
| Supply Voltage Range | ±4.5 V to ±18 V (dual supply) | +5 V to +15 V (single supply, VDD) | Supply requirements differ, so the surrounding power design must match the device; a dual-supply op amp and a single-supply DAC are not power-compatible. |
| Signal Interface | Analog input/output (voltage feedback op amp) | Parallel digital input (8-bit data bus) with analog current output | The interface type dictates how the part connects to the rest of the system; analog vs digital interfaces serve entirely different signal-chain roles. |
| Resolution / Precision Metric | Op amp precision characterized by low offset voltage and high open-loop gain | 8-bit DAC resolution | The performance metric differs by device class; DAC resolution has no equivalent meaning for an op amp, reinforcing that they are not substitutes. |
| Output Type | Voltage output (amplified analog signal) | Current output (multiplying DAC) | Output signal form must match the load and downstream circuitry; voltage and current outputs require different interfacing. |
| Typical Application Role | Signal buffering, amplification, active filtering | Digital-to-analog conversion, programmable gain/attenuation, waveform generation | Application role clarifies substitutability; these parts occupy different positions in a signal chain and cannot replace one another. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD711JN | AD7111LN |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | - | LOGDAC® |
| Part Status | Obsolete | Obsolete |
| Number of Bits | - | 17 |
| Number of D/A Converters | - | 1 |
| Output Type | - | Current - Unbuffered |
| Differential Output | - | No |
| Data Interface | - | Parallel |
| Voltage - Supply, Analog | - | 5V |
| Voltage - Supply, Digital | - | 5V |
| Architecture | - | R-2R |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Amplifier Type | J-FET | - |
| Number of Circuits | 1 | - |
| Slew Rate | 20V/µs | - |
| -3 dB Bandwidth | 4 MHz | - |
| Current - Input Bias | 15 pA | - |
| Voltage - Input Offset | 300 µV | - |
| Supply Current | 2.5mA | - |
| Current - Output / Channel | 25 mA | - |
| Voltage - Supply Span(Min) | 9 V | - |
| Voltage - Supply Span(Max) | 36 V | - |
| Mounting Type | Through Hole | - |
Frequently asked questions
Are the AD711JN and AD7111LN the same type of component?
No. The AD711JN is a precision low-noise operational amplifier, while the AD7111LN is a multiplying digital-to-analog converter (DAC). They are functionally different devices and are not interchangeable.
What are the key differences in function between the AD711JN and AD7111LN?
The AD711JN is a monolithic BiFET op amp intended for high-speed, precision analog signal conditioning. The AD7111LN is a CMOS multiplying DAC designed for digital-to-analog conversion and multiplying applications. Their core functions and typical circuit roles differ fundamentally.
Do the AD711JN and AD7111LN share the same package type?
Both devices are offered in a 16-pin plastic DIP (N) package in the JN and LN grades respectively. However, package similarity does not imply pin or functional compatibility, and the pinouts are defined by each device's respective datasheet.
Can the AD711JN be used as a replacement for the AD7111LN in a DAC circuit?
No. The AD711JN is an operational amplifier and cannot perform the digital-to-analog conversion function of the AD7111LN. Substitution would require a functionally equivalent multiplying DAC, not an op amp.
What are the supply voltage requirements for each device?
The AD711JN operates from dual supplies typically in the ±4.5 V to ±18 V range. The AD7111LN operates from a single +5 V supply (with specific logic and reference considerations per its datasheet). Designers must verify exact limits against the respective manufacturer datasheets.
Are the AD711JN and AD7111LN both suitable for precision analog signal chains?
The AD711JN is designed for precision op-amp applications such as high-speed integrators and active filters. The AD7111LN is a multiplying DAC used for digital gain control and signal multiplication. Each has a distinct role; they may coexist in a signal chain but are not substitutes for one another.
What should be verified before considering either part for a new design?
Confirm the required function (op amp vs. multiplying DAC), supply voltage, package and pinout, temperature grade, and all timing and accuracy specifications against the official manufacturer datasheet. Because the two parts serve different functions, a direct cross-reference is not applicable.