Part A
ADS7960QDBTRQ1
Texas Instruments
- Lifecycle
- Active
- Stock
- 6227 PCS
- Package
- TSSOP-38
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7961SDBTRG4 is a viable functional replacement candidate for the ADS7960QDBTRQ1 in many applications, as both are 8-channel, 12-bit SAR ADCs with an SPI-compatible serial interface in a TSSOP-38 package. However, the ADS7960QDBTRQ1 is an automotive-qualified (AEC-Q100 Grade 1) device, whereas the ADS7961SDBTRG4 is not automotive-qualified, so qualification status must be validated for automotive or mission-critical designs before substitution.
Resolution and Channel Count
High match
Package Type
High match
Interface Type
High match
Automotive Qualification
Validation required
Parts at a glance
Part B
ADS7961SDBTRG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 7627 PCS
- Package
- TFSOP-38
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (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 | ADS7961SDBTRG4 | Why it matters |
|---|---|---|---|
| Resolution | 8 bit | 16 bit | Resolution determines the smallest measurable voltage step; a 16-bit device offers far finer measurement granularity than an 8-bit device, so they are not functionally interchangeable in precision applications. |
| Number of Input Channels | 12 single-ended | 16 single-ended | Channel count defines how many analog signals can be multiplexed into the ADC; a system needing more than 12 inputs cannot use the 12-channel part. |
| Sampling Rate | 1 MSPS | 1 MSPS | Maximum sample rate sets the bandwidth of signals the ADC can digitize; both parts share the same 1 MSPS throughput, so timing performance is equivalent. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | The analog supply range determines compatibility with the system rail; identical ranges mean both can operate from the same power source. |
| Interface Type | SPI (serial) | SPI (serial) | The digital interface must match the host controller; both use SPI, so the same microcontroller firmware and bus wiring can be reused. |
| Package / Mounting | TSSOP-20 (surface mount) | TSSOP-20 (surface mount) | Package and footprint must match for a drop-in replacement on an existing PCB; identical TSSOP-20 packages allow the same land pattern. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | The temperature range defines the environments in which the part is guaranteed to meet specifications; matching ranges suit the same application conditions. |
| Automotive Qualification | AEC-Q100 qualified (Q1) | Not AEC-Q100 qualified | AEC-Q100 qualification is required for automotive use; the Q1 part is automotive-grade while the other is not, which affects suitability for automotive designs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7960QDBTRQ1 | ADS7961SDBTRG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | Automotive, AEC-Q100 | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 1M | 1M |
| Number of Inputs | 12 | 16 |
| 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 ADS7961SDBTRG4?
The ADS7960QDBTRQ1 is an automotive-qualified (AEC-Q100 Grade 1) 8-channel, 8-bit SAR ADC in a 30-pin TSSOP package, specified over a -40°C to +125°C temperature range. The ADS7961SDBTRG4 is a non-automotive 16-channel, 8-bit SAR ADC in a 38-pin TSSOP package, specified over a -40°C to +125°C operating range. The primary differences are channel count (8 vs 16), package pin count (30 vs 38), and automotive qualification (Q1 vs non-Q1).
Are the ADS7960QDBTRQ1 and ADS7961SDBTRG4 pin-to-pin compatible?
No. The ADS7960QDBTRQ1 uses a 30-pin TSSOP (DBT) package, while the ADS7961SDBTRG4 uses a 38-pin TSSOP (DBT) package. The different pin counts and pinouts prevent direct pin-to-pin substitution; the PCB land pattern and routing must be redesigned.
Do both devices share the same resolution and analog input architecture?
Yes. Both are 8-bit successive-approximation register (SAR) ADCs with a single-ended, 8-channel or 16-channel multiplexed input architecture, respectively, and both support a unipolar analog supply range of 2.7 V to 5.5 V with a separate digital supply. Both use an SPI-compatible serial interface for configuration and data readback.
Can the ADS7961SDBTRG4 be used as a drop-in replacement for the ADS7960QDBTRQ1 in automotive applications?
No. The ADS7961SDBTRG4 is not AEC-Q100 qualified, whereas the ADS7960QDBTRQ1 is AEC-Q100 Grade 1 qualified for automotive use. Substituting a non-automotive-qualified device in an automotive design would violate qualification requirements and is not supported by the manufacturer.
What sampling rate do the ADS7960QDBTRQ1 and ADS7961SDBTRG4 support?
Both devices are specified for a maximum throughput of 1 MSPS (1 megasample per second) when operating with a 5 V analog supply and the appropriate SPI clock rate. Throughput scales with the analog supply voltage and serial clock frequency per the manufacturer datasheet timing specifications.
How do the channel counts affect system design when choosing between these two parts?
The ADS7960QDBTRQ1 provides 8 single-ended input channels, while the ADS7961SDBTRG4 provides 16 single-ended input channels. Designs requiring more than 8 analog inputs must use the ADS7961SDBTRG4 or add an external multiplexer; designs with 8 or fewer inputs can use the smaller 30-pin ADS7960QDBTRQ1 to save board space.
Are the reference and supply voltage requirements the same for both devices?
Yes. Both devices operate from an analog supply (AVDD) of 2.7 V to 5.5 V and a digital supply (DVDD) of 1.65 V to 5.5 V, and both use an external reference voltage (VREF) applied to the REF pin, with VREF ranging from 0.5 V to AVDD. The reference input architecture and decoupling requirements are consistent across both parts per the respective datasheets.