Part A
ADS7886SBDBVR
德州儀器
- Lifecycle
- Active
- Stock
- 3915 件
- Package
- SOT-23-6
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS7886SBDBVR and ADS7887MDBVT are both 12-bit, 1-MSPS SAR analog-to-digital converters in SOT-23-6 packages with a single-ended input and SPI-compatible serial interface, making them strong functional replacement candidates. The primary distinction is the supply voltage range and reference configuration, so the ADS7887MDBVT should be validated against the target system's supply rail and reference requirements before substitution.
Resolution and Sample Rate
High match
Package Type
High match
Interface Type
High match
Supply Voltage Range
Validation required
Parts at a glance
Part B
ADS7887MDBVT
德州儀器
- Lifecycle
- Active
- Stock
- 9951 件
- Package
- SOT-23-6
- Series
- 資料獲取-模數轉換器（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 | ADS7886SBDBVR | ADS7887MDBVT | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 10 bit | Resolution determines the smallest analog voltage change the ADC can distinguish; a 12-bit part offers 4x finer quantization than a 10-bit part, affecting measurement accuracy and substitutability. |
| Sampling Rate | 1 MSPS | 1.25 MSPS | Maximum throughput limits how fast the system can capture signals; the higher-rate part can digitize faster-changing inputs, which matters for dynamic or high-bandwidth applications. |
| Input Type | Single-ended | Pseudo-differential | Single-ended inputs measure against ground, while pseudo-differential inputs measure against a reference pin, improving rejection of common-mode noise and ground offsets. |
| Supply Voltage Range | 2.35 V to 5.25 V | 2.7 V to 5.25 V | The minimum supply voltage affects compatibility with low-voltage rails; the wider range part can operate on lower supplies, which can be critical in battery-powered designs. |
| Interface | SPI (serial) | SPI (serial) | Both use a serial SPI-compatible interface, so the host microcontroller connection is functionally similar, easing drop-in replacement at the digital interface level. |
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) | Identical package and pinout allow the parts to share the same PCB footprint, which is essential for physical substitutability without layout changes. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Matching industrial temperature ranges ensure both parts can be used in the same environmental conditions without derating or thermal concerns. |
| Reference | External reference | External reference | Both require an external reference voltage, so the same reference circuit and accuracy budget can be reused when swapping parts. |
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 | ADS7887MDBVT |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 10 |
| Sampling Rate(Per Second) | 1M | 1.25M |
| 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 | 2.35V ~ 5.25V |
| Voltage - Supply, Digital | 2.35V ~ 5.25V | 2.35V ~ 5.25V |
| Operating Temperature | -40°C ~ 125°C | -55°C ~ 125°C |
Frequently asked questions
What are the key differences between the ADS7886SBDBVR and ADS7887MDBVT?
The ADS7886SBDBVR is a 12-bit, 1-MSPS SAR ADC in a SOT-23-6 (DBV) package, while the ADS7887MDBVT is a 10-bit, 1.25-MSPS SAR ADC in a SOT-23-6 (DBV) package. The primary differences are resolution (12-bit vs 10-bit), maximum sampling rate (1 MSPS vs 1.25 MSPS), and specified operating temperature range (the ADS7886S is rated for -40°C to +125°C; the ADS7887M is rated for -40°C to +125°C per its datasheet). Both share the same pinout and package footprint.
Are the ADS7886SBDBVR and ADS7887MDBVT pin-compatible?
Yes. Both devices are offered in the same 6-pin SOT-23 (DBV) package with the same pin functions (VDD, GND, CS, SCLK, SDO, and analog input), so they are pin-compatible and share the same PCB land pattern.
Can the ADS7887MDBVT be used as a drop-in replacement for the ADS7886SBDBVR?
Not directly without design review. Although pin-compatible, the ADS7887MDBVT provides 10-bit resolution versus 12-bit for the ADS7886SBDBVR, and its maximum throughput is 1.25 MSPS versus 1 MSPS. System resolution, accuracy budget, and timing must be revalidated against the ADS7887 datasheet before substitution.
What is the resolution and sampling rate of each device?
The ADS7886SBDBVR is a 12-bit SAR ADC with a maximum throughput of 1 MSPS. The ADS7887MDBVT is a 10-bit SAR ADC with a maximum throughput of 1.25 MSPS. Both are specified for operation from a single 2.35 V to 5.25 V supply.
Do both parts use the same serial interface?
Yes. Both devices use a SPI-compatible serial interface with CS, SCLK, and SDO signals, allowing direct connection to most microcontrollers and DSPs. The interface timing parameters differ slightly and should be checked against each device's datasheet.
What are the supply voltage and reference requirements for these ADCs?
Both the ADS7886SBDBVR and ADS7887MDBVT operate from a single supply of 2.35 V to 5.25 V and use the supply voltage as the reference, so the analog input range is 0 V to VDD. No external reference is required.
What are the package and temperature range specifications?
Both devices are supplied in a 6-pin SOT-23 (DBV) package. The ADS7886SBDBVR is specified over -40°C to +125°C, and the ADS7887MDBVT is specified over -40°C to +125°C. Designers should confirm the exact grade suffix against the manufacturer datasheet for the target application.