Part A
AD7609BSTZ-RL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5621 個数
- Package
- LQFP-64
- Series
- データ取得 - ADC/DAC - 特殊用途向け
Replacement verdict
Compatible functional replacement candidate
The AD7607BSTZ and AD7609BSTZ-RL share the same 64-lead LQFP footprint, 16-bit SAR architecture, and 8-channel simultaneous-sampling front end, making them strong functional replacement candidates. The AD7609BSTZ-RL adds true differential inputs and a wider ±10 V bipolar range, so the substitution is viable only when the differential input capability and extended input range are acceptable or beneficial to the target design.
Package and Pinout
High match
Resolution and Channel Count
High match
Input Configuration
Validation required
Analog Input Range
Validation required
Parts at a glance
Part B
AD7607BSTZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2040 個数
- Package
- LQFP-64
- Series
- データ取得 - ADC/DAC - 特殊用途向け
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7607BSTZ | AD7609BSTZ-RL | Why it matters |
|---|---|---|---|
| Number of ADC Channels | 8 | 8 | Channel count determines how many analog signals can be sampled simultaneously; both are 8-channel devices. |
| Resolution | 14 bits | 18 bits | Higher resolution provides finer measurement granularity and lower quantization error, which is critical for precision applications. |
| Sampling Rate (max) | 200 kSPS | 200 kSPS | Maximum throughput determines the highest signal frequency that can be captured; both support 200 kSPS. |
| Input Type | Bipolar, true differential | Bipolar, true differential | True differential inputs improve common-mode rejection and noise immunity; both devices share this architecture. |
| Input Voltage Range | ±10 V, ±5 V | ±10 V, ±5 V | Selectable input ranges allow direct interfacing with industrial bipolar signals without external conditioning. |
| SNR (typ) | 85 dB | 95 dB | Signal-to-noise ratio affects measurement accuracy; the 18-bit device offers higher SNR for demanding precision applications. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Single 5 V supply simplifies system power design; both parts share the same supply requirement. |
| Package / Pin Count | 64-lead LQFP | 64-lead LQFP | Identical package and pinout enable drop-in board compatibility between the two devices. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range ensures reliable operation in harsh environments; both parts are rated identically. |
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 | AD7609BSTZ-RL | AD7607BSTZ |
|---|---|---|
| Part Status | Active | Active |
| Type | Data Acquisition System (DAS), ADC | Data Acquisition System (DAS), ADC |
| Number of Channels | 8 | 8 |
| Resolution(Bits) | 18 b | 14 b |
| Sampling Rate(Per Second) | 200k | 200k |
| Data Interface | SPI, DSP | SPI, DSP |
| Voltage Supply Source | Analog and Digital | Analog and Digital |
| Voltage - Supply | 2.3V ~ 5V, 4.75V ~ 5.25V | 2.3V ~ 5.25V, 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD7607BSTZ and the AD7609BSTZ-RL?
The AD7607BSTZ is an 8-channel, 14-bit bipolar simultaneous-sampling ADC, while the AD7609BSTZ-RL is an 8-channel, 18-bit bipolar simultaneous-sampling ADC. Both are members of the AD760x family and share the same 64-lead LQFP package and pinout, but the AD7609 offers higher resolution (18-bit vs 14-bit) and correspondingly different performance specifications such as SNR and throughput.
Are the AD7607BSTZ and AD7609BSTZ-RL pin-compatible?
Yes. Both devices are offered in the same 64-lead LQFP (STZ) package and are pin-compatible within the AD760x family, which allows a common PCB footprint. However, designers must verify that the higher performance of the AD7609 is supported by the surrounding circuitry and that all timing and interface requirements are met.
What is the resolution and throughput of each device?
The AD7607BSTZ provides 14-bit resolution with a maximum throughput of 200 kSPS per channel. The AD7609BSTZ-RL provides 18-bit resolution with a maximum throughput of 200 kSPS per channel. Both are simultaneous-sampling ADCs intended for multi-channel acquisition systems.
What input voltage range do these ADCs support?
Both the AD7607BSTZ and AD7609BSTZ-RL feature bipolar, true-differential analog inputs with a selectable input range of ±10 V or ±5 V. This makes them suitable for industrial and instrumentation applications requiring direct connection to bipolar signals.
Do both parts include an on-chip reference and analog front end?
Yes. Both the AD7607BSTZ and AD7609BSTZ-RL integrate an on-chip reference, a reference buffer, and an analog input clamp protection circuit, along with a flexible digital interface. This integration reduces external component count for multi-channel data acquisition designs.
What digital interface do the AD7607BSTZ and AD7609BSTZ-RL provide?
Both devices provide a parallel and serial digital interface compatible with SPI/QSPI/MICROWIRE/DSP standards, along with a FRSTDATA output indicator. The interface supports daisy-chaining of multiple devices, which is useful for expanding channel count in system designs.
What are the typical applications for these simultaneous-sampling ADCs?
Both the AD7607BSTZ and AD7609BSTZ-RL are intended for power-line monitoring and protection, motor control, industrial instrumentation, and multi-axis positioning systems where simultaneous sampling of multiple bipolar channels is required. The AD7609's 18-bit resolution is advantageous where higher dynamic range and precision are needed.
Can the AD7607BSTZ be replaced by the AD7609BSTZ-RL in an existing design?
Because both devices share the same package and pinout, a hardware drop-in is physically possible, but the replacement should only be made after validating that the system's digital interface timing, power supply requirements, and signal conditioning support the AD7609's 18-bit performance. The higher resolution may require review of noise, layout, and reference considerations to realize the full benefit.