Part A
AD7714YRZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5155 個数
- Package
- SOIC-24
- 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 AD7714YRZ is a viable functional replacement candidate for the AD7710ARZ in many signal-chain applications, as both are 24-bit sigma-delta ADCs with on-chip programmable gain amplifiers and similar serial interface architectures. However, the AD7714YRZ offers a lower maximum output data rate and reduced PGA gain range, so designs requiring the AD7710ARZ's higher throughput or wider gain settings must be validated before substitution.
Resolution and ADC Architecture
High match
Maximum Output Data Rate
Validation required
PGA Gain Range
Validation required
Package 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 | AD7714YRZ | Why it matters |
|---|---|---|---|
| Resolution (bits) | 24 | 24 | Both are 24-bit sigma-delta ADCs, so resolution is equivalent for high-precision measurement applications. |
| Number of input channels | 2 (differential) | 5 (3 differential / 5 pseudo-differential) | The AD7714 offers more input channels, allowing more signals to be measured without external multiplexing. |
| PGA gain range | 1 to 128 | 1 to 128 | Identical programmable gain ranges support similar low-level signal amplification for both parts. |
| Output data rate (max) | 1.028 kSPS | 1 kSPS | Similar maximum throughput; both suit low-frequency precision measurement rather than high-speed sampling. |
| Supply voltage | 5 V (analog and digital) | 3 V to 5 V | The AD7714 supports lower supply voltages, enabling 3 V system designs where the AD7710 requires 5 V. |
| Interface type | Serial (SPI/QSPI/MICROWIRE compatible, bidirectional) | Serial (SPI/QSPI/MICROWIRE compatible, 3-wire) | Both use serial interfaces, but the AD7714 uses a simpler 3-wire interface versus the AD7710's bidirectional interface. |
| Package | 24-lead SOIC | 24-lead SOIC | Same package footprint aids board-level interchangeability, though pinouts differ. |
| On-chip calibration | Yes (self and system calibration) | Yes (self and system calibration) | Both provide on-chip calibration, reducing external circuitry and improving accuracy over temperature. |
| Operating temperature range | -40°C to +85°C | -40°C to +105°C | The AD7714 supports a wider temperature range, making it suitable for more demanding environments. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7714YRZ | AD7710ARZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 24 | 24 |
| Sampling Rate(Per Second) | 1k | 1k |
| Number of Inputs | 3, 5 | 2 |
| Input Type | Differential, Pseudo-Differential | Differential |
| Data Interface | SPI, DSP | SPI |
| Configuration | MUX-PGA-ADC | MUX-PGA-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External, Internal |
| Voltage - Supply, Analog | 2.7V ~ 3.3V, 5V | 5V ~ 10V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 5V |
| Features | PGA | PGA |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 85°C |
Frequently asked questions
What are the key architectural differences between the AD7710ARZ and AD7714YRZ?
The AD7710ARZ is a 24-bit sigma-delta ADC with a single differential input channel (two pseudo-differential inputs) and an on-chip programmable gain amplifier (PGA) with gains from 1 to 128. The AD7714YRZ is a 24-bit sigma-delta ADC offering three differential input channels (five pseudo-differential inputs) and a PGA with gains from 1 to 128. Both integrate a sigma-delta modulator and digital filter, but the AD7714 provides more input channels while the AD7710 includes a second differential input pair and a bidirectional serial interface with a wider supply range.
Are the AD7710ARZ and AD7714YRZ pin-compatible?
No. The AD7710ARZ is supplied in a 24-lead SOIC (RW-24) package, while the AD7714YRZ is supplied in a 24-lead SOIC (RW-24) package as well, but the pin functions differ between the two devices. Pin assignments for analog inputs, reference, and digital interface signals are not identical, so they cannot be treated as drop-in replacements without verifying the pinout against the respective datasheets.
How do the supply voltage requirements compare?
The AD7710ARZ operates from a single +5 V supply (AVDD and DVDD) or a dual ±5 V supply, with an operating range typically from 4.75 V to 5.25 V for the analog supply. The AD7714YRZ operates from a single +3 V or +5 V supply (2.7 V to 5.25 V), making it suitable for lower-voltage systems. Designers should confirm the exact supply range and reference configuration in the manufacturer datasheets before substitution.
What are the differences in input channel configuration?
The AD7710ARZ provides two pseudo-differential input channels (AIN1 and AIN2) that can be configured as a single differential pair, with an on-chip PGA. The AD7714YRZ provides five pseudo-differential input channels that can be configured as three differential input pairs, selected via the input multiplexer. The AD7714 therefore offers greater channel count and flexibility for multi-sensor applications, while the AD7710 is suited to single- or dual-channel precision measurement.
Do both devices support the same digital interface?
Both devices provide a serial interface, but the AD7710ARZ supports a bidirectional serial port that can be configured for three-wire operation and includes a SYNC input and a DATA READY output. The AD7714YRZ provides a similar serial interface with a DATA READY output and supports both three-wire and four-wire configurations. The register maps and control word formats differ between the two devices, so firmware must be adapted accordingly.
How do the resolution and output data rates compare?
Both the AD7710ARZ and AD7714YRZ are 24-bit sigma-delta ADCs. The AD7710ARZ offers programmable output update rates typically from 9.76 Hz to 1.028 kHz, while the AD7714YRZ offers programmable output update rates from 5 Hz to 1 kHz. Both provide 24-bit no-missing-code performance at lower update rates, but the exact noise-free resolution depends on gain, update rate, and filter settings as specified in the datasheets.
Can the AD7714YRZ replace the AD7710ARZ in an existing design?
Not directly. Although both are 24-bit sigma-delta ADCs in 24-lead SOIC packages, they differ in pinout, supply voltage range, input channel configuration, register map, and digital interface timing. A replacement requires a PCB redesign or rework, firmware changes, and validation of analog performance against the target specifications. Consult both datasheets and the manufacturer's application notes before considering substitution.