Part A
AD7710ARZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4329 ПКС
- Package
- SOIC-24
- Series
- Сбор данных - аналогово-цифровые преобразователи (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7710ARZ and AD7714YR are both 24-bit sigma-delta ADCs from Analog Devices, but they differ in channel count, package, and interface configuration. The AD7714YR offers three differential inputs versus the AD7710ARZ's two, and both share a similar serial interface and supply range, making the AD7714YR a viable functional candidate where an additional input channel is beneficial, provided the board layout accommodates the different package and pinout.
Resolution
High match
Channel Count
Not compatible
Package Type
Validation required
Interface Type
High match
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7710ARZ | AD7714YR | Why it matters |
|---|---|---|---|
| Resolution (bits) | 24 | 24 | Both are 24-bit sigma-delta ADCs, so resolution alone does not distinguish them for substitutability. |
| Number of input channels | 2 (differential) | 5 (3 differential / 5 pseudo-differential) | Channel count determines how many signals can be measured; the AD7714 offers more inputs, affecting system architecture. |
| PGA gain range | 1 to 128 | 1 to 128 | Programmable gain affects the ability to interface small-amplitude sensors directly without external amplification. |
| Output data rate (max) | 1.028 kSPS | 1 kSPS | Maximum throughput influences how fast the system can sample and respond to changing inputs. |
| Supply voltage | 5 V (single) or ±5 V (dual) | 3 V to 5 V (single) | Supply requirements determine power-rail compatibility and whether the part fits a 3 V or 5 V system. |
| Interface type | Serial (SPI-compatible, bidirectional) | Serial (SPI/QSPI/MICROWIRE compatible) | Interface compatibility affects how easily the ADC connects to the host microcontroller or DSP. |
| Package | 24-lead SOIC (wide) | 28-lead SOIC (wide) | Package footprint and pin count affect PCB layout and whether a drop-in replacement is possible. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +105 °C | Temperature range determines suitability for industrial or harsh-environment applications. |
| Internal reference | No (external reference required) | No (external reference required) | Reference architecture affects accuracy and the need for external precision reference circuitry. |
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 | AD7710ARZ | AD7714YR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 24 | 24 |
| Sampling Rate(Per Second) | 1k | 1k |
| Number of Inputs | 2 | 3, 5 |
| Input Type | Differential | Differential, Pseudo-Differential |
| Data Interface | SPI | SPI, DSP |
| Configuration | MUX-PGA-ADC | MUX-PGA-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External, Internal | External |
| Voltage - Supply, Analog | 5V ~ 10V | 2.7V ~ 3.3V, 5V |
| Voltage - Supply, Digital | 5V | 2.7V ~ 5.25V |
| Features | PGA | PGA |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 105°C |
Frequently asked questions
What are the primary functional differences between the AD7710ARZ and AD7714YR?
The AD7710ARZ is a 24-bit sigma-delta ADC with a single differential input channel and an on-chip programmable gain amplifier (PGA), designed primarily for low-frequency measurement applications. The AD7714YR is a 24-bit sigma-delta ADC featuring a 3-channel differential or 5-channel pseudo-differential input multiplexer with an on-chip PGA. The AD7714YR offers input multiplexing for multiple signal channels, while the AD7710ARZ provides a single differential input pair with a second input for reference or auxiliary purposes.
Are the AD7710ARZ and AD7714YR pin-compatible?
No. The AD7710ARZ is supplied in a 24-lead SOIC (RW-24) package, while the AD7714YR is supplied in a 24-lead SOIC (R-24) package. Although both use a 24-lead SOIC footprint, the pin functions and internal signal assignments differ between the two devices, so they are not drop-in replacements and require separate PCB layouts.
Do both devices support the same output data rate range?
Both devices are 24-bit sigma-delta ADCs with programmable output update rates. The AD7710ARZ supports output update rates programmable from approximately 9.8 Hz to 1.028 kHz, while the AD7714YR supports output update rates programmable from approximately 5 Hz to 1 kHz. The exact rate depends on the selected gain and filter settings, so the datasheet should be consulted for the specific configuration.
How do the input configurations differ between the AD7710ARZ and AD7714YR?
The AD7710ARZ provides one differential input channel (AIN1+/AIN1-) plus a second differential input pair (AIN2+/AIN2-) that can be used for reference or auxiliary measurement. The AD7714YR provides a multiplexer that allows selection among three fully differential input channels or five pseudo-differential input channels, making it better suited for multi-channel signal acquisition.
Do both parts include an on-chip programmable gain amplifier (PGA)?
Yes. Both the AD7710ARZ and AD7714YR integrate an on-chip PGA. The AD7710ARZ provides programmable gain settings of 1, 2, 4, 8, 16, 32, 64, and 128. The AD7714YR provides programmable gain settings of 1, 2, 4, 8, 16, 32, 64, and 128 as well. Gain settings are configured through the serial interface in both devices.
What serial interface do the AD7710ARZ and AD7714YR use?
Both devices use a bidirectional serial interface for configuration and data readout. The AD7710ARZ supports a 3-wire serial interface compatible with SPI and QSPI protocols. The AD7714YR also supports a 3-wire serial interface compatible with SPI and QSPI, and additionally supports a 2-wire interface mode. Both devices allow daisy-chaining of multiple converters on the same serial bus.
Can the AD7714YR replace the AD7710ARZ in an existing design?
Not as a direct drop-in replacement. Although both are 24-bit sigma-delta ADCs in 24-lead SOIC packages, they differ in pin assignments, input multiplexing architecture, and register map. A redesign of the PCB layout and firmware configuration would be required. The AD7714YR may be considered when multi-channel input capability is needed, but the design must be validated against the AD7714 datasheet.
What are the typical applications for each device?
The AD7710ARZ is typically used in industrial process control, weigh scales, and low-frequency measurement systems requiring a single high-resolution differential input. The AD7714YR is typically used in multi-channel data acquisition systems, industrial instrumentation, and sensor interface applications where several differential or pseudo-differential signals must be digitized by a single converter.