Part A
AD7683ARMZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4105 個数
- Package
- MSOP-8
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7683BRMZRL7 and AD7683ARMZ are functionally equivalent 16-bit PulSAR analog-to-digital converters sharing the same core architecture, resolution, and serial interface, making them viable substitutes in most designs. The primary distinction lies in their operating temperature range and package finish, so the AD7683ARMZ is best suited for standard commercial applications while the AD7683BRMZRL7 supports extended industrial temperature requirements. Designers should confirm thermal tolerances and reel packaging needs before finalizing the substitution.
Resolution and Architecture
High match
Package Type
High match
Operating Temperature Range
Validation required
Packaging and Finish
Validation required
Parts at a glance
Part B
AD7683BRMZRL7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6941 個数
- Package
- MSOP-8
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7683BRMZRL7 | AD7683ARMZ | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both converters provide the same 16-bit resolution, so measurement precision is equivalent. |
| Sampling Rate | 100 kSPS | 100 kSPS | Identical throughput means either part supports the same signal bandwidth and update rate. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Same single-channel architecture allows direct functional substitution in the signal chain. |
| Input Type | Single-ended, pseudo-differential | Single-ended, pseudo-differential | Matching input configuration ensures the same analog front-end design can be reused. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Same supply range means both parts work in identical power domains without redesign. |
| Interface | SPI / QSPI / MICROWIRE / DSP compatible serial | SPI / QSPI / MICROWIRE / DSP compatible serial | Identical serial interface allows the same digital host and firmware to be used. |
| Package / Mounting | 10-Lead MSOP, surface mount | 10-Lead MSOP, surface mount | Same package and footprint enable drop-in board replacement. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Equivalent temperature ratings ensure the same environmental qualification applies. |
| Packaging / Ordering Format | Tape and reel (RL7) | Tube / tray | Different shipping formats affect assembly line handling and inventory planning, though the die is functionally the same. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7683ARMZ | AD7683BRMZRL7 |
|---|---|---|
| Series | PulSAR® | PulSAR® |
| Part Status | Active | Active |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 100k |
| Number of Inputs | 1 | 1 |
| Input Type | Pseudo-Differential | Pseudo-Differential |
| Data Interface | SPI, DSP | SPI, DSP |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD7683BRMZRL7 and the AD7683ARMZ?
Both parts are 16-bit, 100 kSPS PulSAR analog-to-digital converters in a 10-lead MSOP package and share the same core specifications. The primary differences are the grade and packaging format: the AD7683BRMZRL7 is a B-grade device supplied in tape-and-reel (RL7) format, while the AD7683ARMZ is an A-grade device supplied in tube format. The B-grade offers tighter integral nonlinearity (INL) and offset/gain error specifications than the A-grade.
Are the AD7683BRMZRL7 and AD7683ARMZ pin-compatible and footprint-compatible?
Yes. Both devices are offered in the same 10-lead MSOP (RM) package with identical pin functions and PCB land patterns, so they are pin-compatible and footprint-compatible. The difference is the performance grade and the delivery format (tape-and-reel vs tube).
What are the resolution and throughput specifications of these AD7683 devices?
Both the AD7683BRMZRL7 and AD7683ARMZ are 16-bit successive-approximation (SAR) ADCs with a maximum throughput of 100 kSPS. They operate from a single 2.7 V to 5.5 V supply and feature a pseudo-differential analog input.
How do the A-grade and B-grade accuracy specifications differ?
The B-grade (AD7683BRMZRL7) has tighter specifications than the A-grade (AD7683ARMZ). Per the Analog Devices datasheet, the B-grade offers lower integral nonlinearity (INL) and reduced offset and gain error compared with the A-grade. Designers should consult the official datasheet for the exact maximum limits of each grade before selecting a part for a given accuracy budget.
Can the AD7683ARMZ be used as a drop-in replacement for the AD7683BRMZRL7?
Because both are pin-compatible in the same 10-lead MSOP package, the AD7683ARMZ can be placed on the same footprint. However, it is a lower grade, so the system's accuracy requirements must be re-validated against the A-grade INL and offset/gain error limits. If the design relies on B-grade accuracy, the substitution may not meet specifications.
What is the difference between the RL7 suffix and the tube packaging?
The "RL7" suffix on AD7683BRMZRL7 indicates tape-and-reel packaging (7-inch reel), which is suited to automated high-volume assembly. The AD7683ARMZ without an RL suffix is supplied in tube packaging, typically used for lower-volume or prototype builds. The silicon grade is independent of the packaging format.
What interface and reference requirements do these AD7683 parts have?
Both devices use a serial SPI-compatible interface and require an external reference voltage. They also support a power-down mode between conversions to reduce power consumption. These characteristics are common to both the A-grade and B-grade versions.