Part A
AD694ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4975 Stückzahl
- Package
- SOIC-16
- Series
- Sensor- und Detektorschnittstellen
Replacement verdict
Compatible functional replacement candidate
The AD694ARZ and AD694JR are functionally equivalent voltage-to-current transmitters sharing the same core architecture, pinout, and 4-20 mA output capability, making them viable substitutes in most designs. The primary distinction is the specified operating temperature range, where the AD694ARZ offers an extended industrial-grade window compared to the AD694JR. Designers should confirm that the AD694JR's narrower temperature specification satisfies the target application's environmental requirements before committing to a direct swap.
Output Type
High match
Package Type
High match
Operating Temperature Range
Validation required
Supply Voltage Range
High match
Parts at a glance
Part B
AD694JR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3474 Stückzahl
- Package
- SOIC-16
- Series
- Sensor- und Detektorschnittstellen
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD694ARZ | AD694JR | Why it matters |
|---|---|---|---|
| Package / Mounting | 16-Lead SOIC (surface mount) | 16-Lead SOIC (surface mount) | Both are SOIC, but the ARZ and JR suffixes denote different temperature/grade screening, which affects board-level reliability in the target environment. |
| Temperature Range (Operating) | -40°C to +85°C (industrial) | 0°C to +70°C (commercial) | The wider industrial range of the ARZ allows use in harsher environments where the commercial-grade JR may not be specified to operate. |
| Grade / Screening | A grade (industrial) | J grade (commercial) | Grade determines guaranteed specifications over temperature; substituting a J-grade part for an A-grade part may violate system accuracy requirements. |
| Function | Voltage-to-current transmitter (4-20 mA) | Voltage-to-current transmitter (4-20 mA) | Both perform the same core signal-conditioning function, so they are functionally interchangeable at the block level. |
| Output Current Range | 4 mA to 20 mA | 4 mA to 20 mA | Identical output span ensures the same loop current signaling is produced, preserving compatibility with downstream receivers. |
| Supply Voltage | +4.5 V to +36 V (single supply) | +4.5 V to +36 V (single supply) | Matching supply range means the same power rail can be used without redesign of the power section. |
| Input Voltage Range | 0 V to 2 V (or 0 V to 10 V, selectable) | 0 V to 2 V (or 0 V to 10 V, selectable) | Identical input ranges allow the same sensor or DAC front-end to drive either part without recalibration. |
| Package Pin Count | 16 | 16 | Same pin count and SOIC footprint enable drop-in PCB compatibility between the two variants. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD694ARZ | AD694JR |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Type | Current Transmitter | Current Transmitter |
| Input Type | Voltage | Voltage |
| Output Type | Voltage | Voltage |
| Supply Current | 23 mA | 23 mA |
| Operating Temperature | -40°C ~ 85°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |