Part A
ADS7886SBDBVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 3915 PCS
- Package
- SOT-23-6
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7886SBDBVR is a viable functional replacement candidate for the ADS7868IDBVR, sharing the same 12-bit SAR architecture, SOT-23-6 package, and single-supply operation. Designers should validate the higher sampling rate, reduced supply voltage range, and simplified digital interface against system timing and logic-level requirements before final qualification.
Resolution and Architecture
High match
Package and Pin Configuration
High match
Sampling Rate
Validation required
Supply Voltage Range
Validation required
Parts at a glance
Part B
ADS7868IDBVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 5174 PCS
- Package
- SOT-23-6
- Series
- Data Acquisition - 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 | ADS7868IDBVR | ADS7886SBDBVR | Why it matters |
|---|---|---|---|
| Resolution | 8 bit | 12 bit | Resolution determines the smallest analog signal change the ADC can distinguish; a 12-bit part offers 16x finer quantization than an 8-bit part, which is critical for precision measurement applications. |
| Sampling Rate | 200 kSPS | 1 MSPS | Maximum throughput limits the bandwidth of signals that can be digitized; the higher-rate device supports faster-changing inputs and higher-frequency signal capture. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Channel count and input configuration determine how many signals can be measured and whether differential or single-ended sensors can be interfaced directly. |
| Supply Voltage Range | 2.7 V to 5.25 V | 2.35 V to 5.25 V | The supply range dictates compatibility with the system rail; a wider low-end range allows operation from lower-voltage supplies and battery-powered designs. |
| 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 between the two parts. |
| Package | SOT-23-6 | SOT-23-6 | Package footprint and pinout affect PCB layout and drop-in substitutability; identical packages simplify board rework and second-sourcing. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +125 °C | The temperature range determines suitability for harsh or automotive environments; the wider-range part supports higher ambient operating conditions. |
| Input Type | Single-ended, unipolar | Single-ended, unipolar | Input configuration determines whether the ADC can directly digitize ground-referenced signals or requires signal conditioning for differential sources. |
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 | ADS7886SBDBVR | ADS7868IDBVR |
|---|---|---|
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Active |
| Number of Bits | 12 | 8 |
| Sampling Rate(Per Second) | 1M | 280k |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Single Ended |
| Data Interface | SPI | SPI |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | Supply | Supply |
| Voltage - Supply, Analog | 2.35V ~ 5.25V | 1.2V ~ 3.6V |
| Voltage - Supply, Digital | 2.35V ~ 5.25V | 1.2V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS7868IDBVR and ADS7886SBDBVR?
The ADS7868IDBVR is an 8-bit, 1-MSPS SAR ADC in a SOT-23-6 package, while the ADS7886SBDBVR is a 12-bit, 1-MSPS SAR ADC in a SOT-23-6 package. The primary difference is resolution (8-bit vs 12-bit), which affects SNR, INL, and DNL performance. Both operate from a 2.35 V to 5.25 V supply and share the same pinout and package footprint.
Are the ADS7868IDBVR and ADS7886SBDBVR pin-compatible?
Yes. Both devices are offered in the same 6-pin SOT-23 (DBV) package with identical pin functions: VDD, GND, VIN, CS, SCLK, and SDO. This allows a common PCB land pattern, but firmware and timing must be revalidated because the resolution and data format differ.
What is the resolution and sampling rate of each device?
The ADS7868IDBVR provides 8-bit resolution at a maximum throughput of 1 MSPS. The ADS7886SBDBVR provides 12-bit resolution at a maximum throughput of 1 MSPS. Both are successive-approximation register (SAR) ADCs with a serial SPI-compatible interface.
Do both parts support the same supply voltage range?
Yes. Both the ADS7868IDBVR and ADS7886SBDBVR operate from a single analog supply of 2.35 V to 5.25 V, per the respective Texas Instruments datasheets. The digital interface levels are referenced to the same VDD supply.
Can the ADS7868IDBVR be replaced by the ADS7886SBDBVR in an existing design?
Pin-compatible replacement is possible, but the system must accommodate the 12-bit data word instead of 8-bit, which changes the SPI frame length and the host's data parsing. The higher resolution also changes LSB size and noise performance, so the analog front end and firmware must be revalidated against the ADS7886SBDBVR datasheet before substitution.
What are the interface and timing characteristics of these ADCs?
Both devices use a serial interface with CS, SCLK, and SDO pins. The ADS7868IDBVR outputs an 8-bit result, while the ADS7886SBDBVR outputs a 12-bit result, so the number of SCLK cycles per conversion frame differs. Designers should consult the respective TI datasheets for exact SCLK frequency limits and acquisition timing.
Which device is better suited for higher-accuracy measurement applications?
The ADS7886SBDBVR is better suited for higher-accuracy measurement because its 12-bit resolution provides 16 times finer LSB size than the 8-bit ADS7868IDBVR, assuming the same reference and input range. The 8-bit ADS7868IDBVR is more appropriate for cost-sensitive or lower-precision monitoring tasks.