Part A
ADS7960QDBTRQ1
Texas Instruments
- Lifecycle
- Active
- Stock
- 6227 PCS
- Package
- TSSOP-38
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7951SBDBT and ADS7960QDBTRQ1 are both 12-bit, 1-MSPS SAR ADCs with an SPI interface, making them functionally comparable for many precision acquisition designs. However, the ADS7960QDBTRQ1 offers 8 input channels versus 4 on the ADS7951SBDBT and is AEC-Q100 qualified for automotive use, while the ADS7951SBDBT is specified for a narrower temperature range. The differing channel count and package footprint require layout and firmware review before substitution, so the ADS7960QDBTRQ1 should be treated as a functional candidate rather than a direct drop-in replacement.
Resolution and Sample Rate
High match
Input Channel Count
Validation required
Package and Footprint
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADS7951SBDBT
Texas Instruments
- Lifecycle
- Active
- Stock
- 5323 PCS
- Package
- TSSOP-30
- Series
- Acquisition de données - Convertisseur analogique - numérique (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 | ADS7951SBDBT | ADS7960QDBTRQ1 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 8 bit | Resolution determines the smallest measurable analog step; a 12-bit ADC provides 16x finer quantization than an 8-bit ADC, directly affecting measurement accuracy and substitutability. |
| Number of Input Channels | 8 single-ended | 12 single-ended | Channel count defines how many analog signals can be monitored; a system needing more than 8 inputs cannot directly substitute the 8-channel device. |
| Sampling Rate | 1 MSPS | 1 MSPS | Maximum throughput affects the ability to capture fast-changing signals; both devices share the same 1 MSPS rate, so timing performance is equivalent. |
| Supply Voltage (Analog) | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Analog supply range determines compatibility with the system's signal swing and reference; identical ranges allow drop-in use in the same analog domain. |
| Interface Type | SPI (serial) | SPI (serial) | The digital interface must match the host controller; both use SPI, so firmware and bus wiring are largely interchangeable. |
| Package | TSSOP-30 | TSSOP-30 | Package footprint and pin count must match for board-level substitution; identical TSSOP-30 packages allow the same PCB land pattern. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Temperature range indicates suitability for harsh environments; matching industrial/automotive ranges supports use in the same operating conditions. |
| Qualification | Industrial | AEC-Q100 (automotive) | Automotive qualification implies stricter reliability and testing; an AEC-Q100 part can substitute in industrial designs, but the reverse may not meet automotive requirements. |
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 | ADS7960QDBTRQ1 | ADS7951SBDBT |
|---|---|---|
| Series | Automotive, AEC-Q100 | microPOWER™ |
| Part Status | Active | Active |
| Number of Bits | 8 | 12 |
| Sampling Rate(Per Second) | 1M | 1M |
| Number of Inputs | 12 | 8 |
| Input Type | Single Ended | Single Ended |
| Data Interface | SPI | SPI |
| Configuration | MUX-PGA-S/H-ADC | MUX-S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 1.7V ~ 5.25V | 1.7V ~ 5.25V |
| Features | PGA | - |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the ADS7951SBDBT and ADS7960QDBTRQ1?
The ADS7951SBDBT is a 12-bit, 1-MSPS, 8-channel SAR ADC in a 30-pin TSSOP package, specified over the industrial temperature range of -40°C to +125°C. The ADS7960QDBTRQ1 is a 12-bit, 1-MSPS, 16-channel SAR ADC in a 38-pin TSSOP package, qualified to AEC-Q100 Grade 1 for automotive applications. The primary differences are channel count (8 vs 16), package pin count (30 vs 38), and automotive qualification.
Are the ADS7951SBDBT and ADS7960QDBTRQ1 pin-compatible?
No. The ADS7951SBDBT uses a 30-pin TSSOP package, while the ADS7960QDBTRQ1 uses a 38-pin TSSOP package. The different pin counts and pinouts prevent direct PCB footprint compatibility, so a board redesign is required when substituting one for the other.
Do both devices share the same SPI interface and resolution?
Yes. Both are 12-bit successive-approximation register (SAR) ADCs with a maximum throughput of 1 MSPS and communicate over a SPI-compatible serial interface. Both support the same digital interface timing family, allowing similar host-side firmware architecture, though the command set and channel addressing differ due to the different channel counts.
What is the difference in automotive qualification between these two parts?
The ADS7960QDBTRQ1 carries the Q1 suffix and is AEC-Q100 Grade 1 qualified, making it suitable for automotive applications with an ambient temperature range of -40°C to +125°C. The ADS7951SBDBT is an industrial-grade device and is not AEC-Q100 qualified, so it should not be used in automotive designs requiring Q1 qualification.
How do the input channel counts affect system design?
The ADS7951SBDBT provides 8 single-ended input channels (configurable as 4 differential pairs), while the ADS7960QDBTRQ1 provides 16 single-ended input channels (configurable as 8 differential pairs). Systems requiring more analog inputs should select the ADS7960QDBTRQ1, while the ADS7951SBDBT suits lower-channel-count designs with a smaller 30-pin footprint.
Do both ADCs support the same analog supply voltage range?
Both devices operate from a single analog supply (AVDD) in the 2.7 V to 5.25 V range and provide a separate digital supply (DVDD) in the 1.7 V to 5.25 V range, allowing flexible interfacing to low-voltage logic. Designers should confirm exact limits against the respective manufacturer datasheets before finalizing the power tree.
Can the ADS7951SBDBT be used as a drop-in replacement for the ADS7960QDBTRQ1 in an existing automotive design?
No. Beyond the package and pin-count mismatch (30-pin vs 38-pin TSSOP), the ADS7951SBDBT lacks AEC-Q100 Q1 qualification required for automotive use. A drop-in replacement is not possible; the design would require a new PCB layout, re-qualification, and verification against automotive reliability standards.