Part A
AD7766BRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2772 PCS
- Package
- TSSOP-16
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7767BRUZ-RL7 and AD7766BRUZ are both 24-bit single-channel sigma-delta ADCs from Analog Devices in the same 16-lead TSSOP package, sharing a common architecture and pin family, so the AD7766BRUZ can serve as a functional replacement candidate for the AD7767BRUZ-RL7 in many designs. However, the two parts differ in maximum sample rate, power consumption, and full-scale input range, so the replacement must be validated against the specific throughput, dynamic-range, and power budget requirements of the target application before adoption.
Resolution and Architecture
High match
Maximum Sample Rate
Validation required
Power Consumption
Validation required
Package and Pin Configuration
High match
Parts at a glance
Part B
AD7767BRUZ-RL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6777 PCS
- Package
- TSSOP-16
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (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 | AD7767BRUZ-RL7 | AD7766BRUZ | Why it matters |
|---|---|---|---|
| Resolution (bits) | 24 | 24 | Both are 24-bit delta-sigma ADCs, so nominal resolution is equivalent for precision measurement applications. |
| Maximum Sample Rate (SPS) | 128 kSPS | 64 kSPS | The AD7767 supports twice the output data rate, which matters for higher-bandwidth signal acquisition. |
| Number of Input Channels | 1 (differential) | 1 (differential) | Both are single-channel differential devices, so channel count is not a differentiator for substitutability. |
| Supply Voltage (Analog) | 2.5 V | 2.5 V | Identical analog supply requirements allow the same power rail design to be reused. |
| Supply Voltage (Digital / I-O) | 2.5 V to 3.6 V | 2.5 V to 3.6 V | Matching digital I/O supply ranges ensure compatibility with the same host logic levels. |
| Interface Type | SPI (serial) | SPI (serial) | Both use a serial SPI-compatible interface, simplifying drop-in replacement at the digital interface. |
| Package | 16-lead TSSOP | 16-lead TSSOP | Identical package and pin count support the same PCB footprint and assembly process. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Equivalent temperature ratings mean both suit the same industrial operating environments. |
| Power Consumption (typical) | 15 mW | 10 mW | The AD7766 draws less power, which can matter in low-power or thermally constrained designs. |
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 | AD7766BRUZ | AD7767BRUZ-RL7 |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 24 | 24 |
| Sampling Rate(Per Second) | 128k | 128k |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | SPI | SPI |
| Configuration | ADC | ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.5V | 2.5V |
| Voltage - Supply, Digital | 2.5V | 2.5V |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What are the key differences between the AD7767BRUZ-RL7 and the AD7766BRUZ?
Both are 24-bit sigma-delta ADCs from Analog Devices in a 16-lead TSSOP package, but they differ in maximum output data rate and power consumption. The AD7767BRUZ-RL7 supports output data rates up to 128 kSPS, while the AD7766BRUZ supports up to 64 kSPS. The AD7767 typically consumes more power at its higher rate, whereas the AD7766 is optimized for lower-power, lower-speed operation. The "-RL7" suffix on the AD7767 denotes tape-and-reel packaging.
Are the AD7767BRUZ-RL7 and AD7766BRUZ pin-compatible?
Yes. Both devices are offered in the same 16-lead TSSOP (RU-16) package and share a common pinout, which allows them to be used on the same PCB footprint. However, firmware and configuration settings must be adjusted for the different maximum data rates and timing requirements.
What is the maximum output data rate of each device?
The AD7767BRUZ-RL7 provides a maximum output data rate of 128 kSPS. The AD7766BRUZ provides a maximum output data rate of 64 kSPS. Both are 24-bit sigma-delta converters, so the higher rate of the AD7767 comes with correspondingly higher power consumption.
Do both parts support the same supply voltage range?
Both devices operate from a 2.5 V analog supply (AVDD) and a 2.5 V digital supply (DVDD), with a separate interface supply (IOVDD) that can range from 1.8 V to 3.6 V for logic compatibility. Designers should confirm exact limits in the respective Analog Devices datasheets before finalizing the power tree.
Can the AD7766BRUZ be used as a drop-in replacement for the AD7767BRUZ-RL7?
Not as a direct drop-in for full-rate operation. Because the AD7766BRUZ has a lower maximum output data rate (64 kSPS vs. 128 kSPS), any design requiring the full 128 kSPS rate of the AD7767BRUZ-RL7 cannot use the AD7766BRUZ without reducing the sample rate. The pinout and package are compatible, but system timing and throughput must be revalidated.
What is the significance of the "-RL7" suffix on the AD7767BRUZ-RL7?
The "-RL7" suffix indicates tape-and-reel packaging in a quantity of 7-inch reels, which is intended for automated high-volume assembly. The AD7766BRUZ is supplied in standard tube or tray packaging unless a specific reel suffix is ordered. The electrical performance of the device is unaffected by the packaging suffix.
Which device is better suited for low-power portable applications?
The AD7766BRUZ is generally better suited for low-power portable applications because its lower maximum output data rate (64 kSPS) corresponds to lower power consumption compared with the AD7767BRUZ-RL7 operating at up to 128 kSPS. Designers should consult the datasheet power-versus-rate curves to confirm the exact consumption at their target throughput.