Part A
ADS7960QDBTRQ1
Texas Instruments
- Lifecycle
- Active
- Stock
- 6227 Stückzahl
- Package
- TSSOP-38
- Series
- Datenerfassung mit Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7951SDBTG4 is a viable functional replacement candidate for the ADS7960QDBTRQ1 in many designs, as both are 12-bit SAR ADCs from the same family with identical TSSOP-38 footprints and comparable SPI interfaces. However, the ADS7960QDBTRQ1 offers 8 single-ended channels versus 4 on the ADS7951SDBTG4, and only the ADS7960QDBTRQ1 carries the automotive AEC-Q100 qualification. Engineers should validate channel count requirements and qualification needs before substituting.
Resolution
High match
Package Type
High match
Channel Count
Not compatible
Qualification Grade
Validation required
Parts at a glance
Part B
ADS7951SDBTG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 7822 Stückzahl
- Package
- TFSOP-30
- Series
- Datenerfassung mit Analog to Digital Converters (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 | ADS7960QDBTRQ1 | ADS7951SDBTG4 | Why it matters |
|---|---|---|---|
| Resolution | 8 bit | 12 bit | Resolution determines the smallest measurable voltage step; a 12-bit ADC provides 16x finer quantization than an 8-bit ADC, directly affecting measurement accuracy. |
| Number of Input Channels | 12 single-ended | 8 single-ended | Channel count defines how many analog signals can be monitored; a system needing 12 inputs cannot be served by an 8-channel device without external multiplexing. |
| Sampling Rate | 1 MSPS | 1 MSPS | Maximum sample rate sets the bandwidth of signals that can be digitized; both parts share the same throughput, so timing-critical designs are unaffected. |
| 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 rail and the input voltage span; identical ranges allow the same front-end biasing. |
| Interface Type | SPI (serial) | SPI (serial) | The digital interface must match the host controller; both use SPI, so firmware and bus wiring can be reused. |
| Package | TSSOP-38 (DBT) | TSSOP-38 (DBT) | Package footprint and pinout govern PCB layout compatibility; identical TSSOP-38 packages allow drop-in board placement. |
| Operating Temperature Range | -40 °C to +125 °C (Q1 automotive) | -40 °C to +125 °C | Temperature range affects suitability for harsh environments; both cover the industrial/automotive extended range. |
| Input Type | Single-ended | Single-ended | Single-ended inputs simplify wiring versus differential inputs; matching input topology preserves signal conditioning design. |
| Qualification | AEC-Q100 qualified | Not AEC-Q100 qualified | Automotive qualification indicates tested reliability for vehicle applications; substituting a non-qualified part may violate automotive design requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7960QDBTRQ1 | ADS7951SDBTG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | Automotive, AEC-Q100 | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| 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 |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Features | PGA | - |
Frequently asked questions
What are the key differences between the ADS7960QDBTRQ1 and the ADS7951SDBTG4?
The ADS7960QDBTRQ1 is an automotive-qualified (AEC-Q100 Grade 1) 8-channel, 12-bit SAR ADC with a 1 MSPS maximum throughput, specified over the -40°C to +125°C temperature range, and supplied in a 30-pin TSSOP (DBT) package. The ADS7951SDBTG4 is a 12-bit, 8-channel SAR ADC with a 1 MSPS maximum throughput in a 30-pin TSSOP (DBT) package, but it is not automotive-qualified and is specified over the -40°C to +125°C industrial range. The primary differentiators are the automotive qualification and the associated quality/PPAP documentation for the Q1 device.
Are the ADS7960QDBTRQ1 and ADS7951SDBTG4 pin-compatible?
Both devices are offered in the same 30-pin TSSOP (DBT) package, and their pin functions (analog inputs, SPI interface, reference, and supply pins) are functionally aligned per the respective datasheets. However, designers must verify the exact pin assignment and any differences in power-supply or reference pin behavior against the specific datasheet revision before treating them as drop-in replacements.
Do both parts support the same SPI interface and throughput?
Yes. Both the ADS7960QDBTRQ1 and ADS7951SDBTG4 are 12-bit SAR ADCs with a maximum throughput of 1 MSPS and use a standard SPI-compatible serial interface for configuration and data readback. The interface timing and register map should still be confirmed against each device's datasheet, as the Q1 variant may include additional configuration or diagnostic features.
What is the difference in temperature grade and qualification between these two ADCs?
The ADS7960QDBTRQ1 is qualified to AEC-Q100 Grade 1, supporting operation from -40°C to +125°C and intended for automotive applications with associated PPAP and quality documentation. The ADS7951SDBTG4 is specified over the -40°C to +125°C industrial temperature range but does not carry automotive qualification. For automotive designs, the Q1 device is the appropriate choice.
Can the ADS7951SDBTG4 be used as a substitute for the ADS7960QDBTRQ1 in an automotive design?
No. The ADS7951SDBTG4 lacks AEC-Q100 automotive qualification, so substituting it for the ADS7960QDBTRQ1 in an automotive application would not meet the qualification and documentation requirements of the original design. Substitution should only be considered in non-automotive applications after full validation against the target design requirements.
What are the supply voltage and reference requirements for these ADCs?
Both devices operate from a single analog supply in the 2.7 V to 5.25 V range and support an external reference voltage for the ADC. The exact recommended operating conditions, reference range, and decoupling requirements should be taken from the respective datasheets, as the Q1 variant may specify additional automotive-grade operating conditions.
Which device should be selected for a new automotive sensor-interface design?
For a new automotive design, the ADS7960QDBTRQ1 is the appropriate selection because it is AEC-Q100 Grade 1 qualified and supported by automotive quality documentation. The ADS7951SDBTG4 is better suited to industrial or consumer applications where automotive qualification is not required.