Part A
AD711JN
Компания Analog Devices Inc.
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Replacement verdict
Not a drop-in replacement
The AD711JN and AD7111ACN are not functionally interchangeable: the AD711JN is a precision BiFET operational amplifier, while the AD7111ACN is a CMOS multiplying digital-to-analog converter. Their core functions, pin configurations, and electrical characteristics differ fundamentally, so substitution requires a complete circuit redesign rather than a direct swap.
Different device function
Different pin configuration
Different supply requirements
Different signal interface
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 | AD7111ACN | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices | Analog Devices | Same manufacturer ensures consistent quality and documentation, but the two parts belong to different product families. |
| Function / Category | Operational amplifier (op amp) | Multiplying digital-to-analog converter (DAC) | These are fundamentally different device types, so they are not functionally substitutable in a circuit. |
| Package | 8-pin PDIP (N) | 16-pin PDIP (N) | Different pin counts and footprints prevent direct board-level interchange. |
| Supply Voltage | ±4.5 V to ±18 V (dual supply) | +5 V single supply (TTL/CMOS compatible) | Supply requirements differ greatly; the DAC operates on a single 5 V rail while the op amp needs a bipolar supply. |
| Number of Channels / Bits | 1 op amp channel | 1 DAC channel, 8-bit resolution | The op amp provides analog signal conditioning while the DAC converts digital codes to analog output; their signal roles are unrelated. |
| Input / Interface Type | Analog differential inputs | Parallel digital input (8-bit) | One device accepts analog signals and the other accepts digital data, so they cannot replace each other in a signal chain. |
| Output Type | Analog voltage output | Analog current/voltage output (multiplying DAC) | Output characteristics differ; the DAC output depends on a reference and digital code, while the op amp buffers/amplifies analog input. |
| Operating Temperature Range | 0 °C to +70 °C (commercial) | 0 °C to +70 °C (commercial) | Both share the same commercial temperature grade, so environmental tolerance is comparable. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD711JN | AD7111ACN |
|---|---|---|
| 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 | -40°C ~ 85°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 AD7111ACN interchangeable?
No. The AD711JN is a precision low-noise operational amplifier, while the AD7111ACN is a multiplying digital-to-analog converter (DAC). They are functionally different devices and cannot be substituted for one another.
What are the core functions of the AD711JN and AD7111ACN?
The AD711JN is a high-speed, precision BiFET operational amplifier featuring low offset voltage and low input bias current. The AD7111ACN is a CMOS multiplying DAC designed for digital-to-analog conversion with a current output.
What package types do the AD711JN and AD7111ACN use?
Both devices are offered in a 16-lead plastic DIP (PDIP) package, denoted by the "N" suffix in their part numbers. However, the pin functions differ because the devices serve different functions.
Do the AD711JN and AD7111ACN have the same pinout?
No. The AD711JN uses a standard single op-amp pinout (offset null, inputs, supply, output), while the AD7111ACN uses a DAC pinout (digital inputs, reference, current output, feedback resistor). Their pin assignments are not compatible.
What are the supply voltage requirements for each device?
The AD711JN operates from dual supplies typically ranging from ±4.5 V to ±18 V. The AD7111ACN operates from a single +5 V supply (with a +5 V to +15 V reference input range). Their supply requirements are not the same.
Can the AD711JN and AD7111ACN be used together in a circuit?
Yes. A common configuration uses the AD7111ACN multiplying DAC to generate an analog signal and the AD711JN op amp as an output buffer or current-to-voltage converter, since the DAC provides a current output that requires external amplification.
What are the key performance differences between the AD711JN and AD7111ACN?
The AD711JN is specified for op-amp parameters such as offset voltage, input bias current, slew rate, and gain bandwidth. The AD7111ACN is specified for DAC parameters such as resolution, linearity, settling time, and reference input range. They are characterized against different parameter sets and are not directly comparable.