Part A
AD7788ARMZ
ADI公司
- Lifecycle
- Active
- Stock
- 3173 件
- Package
- MSOP-10
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The AD7788ARMZ is a viable functional replacement candidate for the AD7788BRMZ, as both parts share the same core sigma-delta ADC architecture, resolution, and MSOP-10 package. Designers should validate the specified operating temperature range and supply voltage tolerances against the target application before final qualification.
Resolution and ADC Architecture
High match
Package Type
High match
Operating Temperature Range
Validation required
Supply Voltage Range
Validation required
Parts at a glance
Part B
AD7788BRMZ
ADI公司
- Lifecycle
- Active
- Stock
- 5028 件
- Package
- MSOP-10
- Series
- 資料獲取-模數轉換器（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 | AD7788BRMZ | AD7788ARMZ | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both parts provide the same ADC resolution, so measurement precision is equivalent. |
| Number of Input Channels | 1 (single-ended/pseudo-differential) | 1 (single-ended/pseudo-differential) | Identical channel count means the same signal routing and board layout can be reused. |
| Sampling Rate | 16.7 SPS | 16.7 SPS | Same output data rate supports the same system timing and filter design. |
| Supply Voltage Range | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Matching supply range allows the same power rail to be used for either device. |
| Interface Type | SPI (3-wire serial) | SPI (3-wire serial) | Same digital interface ensures firmware and microcontroller connections remain compatible. |
| Package / Mounting | 10-Lead MSOP, Surface Mount | 10-Lead MSOP, Surface Mount | Identical package and footprint allow drop-in replacement on the same PCB. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Same temperature rating means both parts suit the same environmental conditions. |
| Input Type | Pseudo-differential | Pseudo-differential | Identical input configuration supports the same sensor and signal conditioning topology. |
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 | AD7788ARMZ | AD7788BRMZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 16.6 | 16.6 |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | SPI, DSP | SPI, DSP |
| Configuration | ADC | ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.5V ~ 5.25V | 2.5V ~ 5.25V |
| Voltage - Supply, Digital | 2.5V ~ 5.25V | 2.5V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What is the difference between the AD7788BRMZ and AD7788ARMZ?
The AD7788BRMZ and AD7788ARMZ are both 16-bit sigma-delta ADCs from Analog Devices in 10-lead MSOP packages. The primary difference is the specified temperature grade: the AD7788ARMZ is specified over the industrial temperature range of −40°C to +85°C, while the AD7788BRMZ is specified over the extended industrial temperature range of −40°C to +105°C. Both share the same functional core, pinout, and package outline.
Are the AD7788BRMZ and AD7788ARMZ pin-compatible?
Yes. Both devices are offered in the same 10-lead MSOP (RM) package with identical pin functions, so they are pin-compatible and share the same PCB land pattern.
Can the AD7788ARMZ be used as a drop-in replacement for the AD7788BRMZ?
Functionally and pin-wise they are interchangeable, but the AD7788ARMZ is only specified to +85°C while the AD7788BRMZ is specified to +105°C. If the application's operating temperature stays within −40°C to +85°C, the AD7788ARMZ can serve as a replacement; for operation above +85°C, the AD7788BRMZ must be retained.
What are the key specifications shared by the AD7788BRMZ and AD7788ARMZ?
Both are 16-bit, low-power, sigma-delta ADCs with a single differential input, on-chip programmable gain amplifier, and internal oscillator. They operate from a 2.7 V to 5.25 V supply, provide a serial SPI-compatible interface, and are housed in a 10-lead MSOP package.
Do the AD7788BRMZ and AD7788ARMZ differ in resolution or accuracy?
No. Both devices provide 16-bit resolution and use the same ADC core and gain stages. The datasheet specifications for resolution, gain error, and offset are equivalent; the distinguishing parameter is the rated operating temperature range.
Which part should be selected for an application operating above +85°C?
The AD7788BRMZ should be selected, because it is specified over the extended industrial range of −40°C to +105°C, whereas the AD7788ARMZ is only specified to +85°C.
Are the AD7788BRMZ and AD7788ARMZ RoHS compliant?
Yes. Both the AD7788BRMZ and AD7788ARMZ are RoHS-compliant parts, as indicated by the "Z" suffix in the ordering code, which denotes lead-free, RoHS-compliant packaging per Analog Devices ordering conventions.