Part A
ADS7866IDBVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 1287 PCS
- Package
- SOT-23-6
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7886SBDBVR and ADS7866IDBVR are both 12-bit, 1 MSPS, single-channel SAR analog-to-digital converters in a 6-pin SOT-23 package with a serial interface, making them strong functional replacement candidates. Designers should validate the supply voltage range and reference configuration against the target application before substituting one for the other.
Resolution and Sample Rate
High match
Package Type
High match
Supply Voltage Range
Validation required
Reference Configuration
Validation required
Parts at a glance
Part B
ADS7886SBDBVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 3915 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 | ADS7886SBDBVR | ADS7866IDBVR | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both are 12-bit SAR ADCs, so resolution is identical and does not affect substitutability. |
| Sampling Rate | 1 MSPS | 200 kSPS | The ADS7886 supports a much higher throughput; systems needing fast sampling cannot substitute the slower ADS7866. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Both are single-channel devices, so channel count is not a differentiator for substitution. |
| Input Type | Single-ended, unipolar | Single-ended, unipolar | Identical input configuration means the same analog front-end topology can be reused. |
| Supply Voltage | 2.35 V to 5.25 V | 1.6 V to 3.6 V | The ADS7866 operates at lower supply voltages, so a 5 V system cannot directly substitute it without level considerations. |
| Interface | SPI / QSPI / Microwire / DSP compatible | SPI / QSPI / Microwire / DSP compatible | Both use the same serial interface, simplifying drop-in replacement at the digital side. |
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) | Identical package and pinout allow direct PCB footprint compatibility. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +85 °C | The ADS7886 supports a wider temperature range, which matters for industrial or automotive environments. |
| Power Consumption (typical) | ~3.6 mW at 3 V, 1 MSPS | ~1.1 mW at 3 V, 200 kSPS | Lower power per conversion in the ADS7866 suits battery-powered designs, while the ADS7886 trades power for speed. |
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 | ADS7866IDBVR | ADS7886SBDBVR |
|---|---|---|
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 200k | 1M |
| 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 | External | Supply |
| Voltage - Supply, Analog | 1.2V ~ 3.6V | 2.35V ~ 5.25V |
| Voltage - Supply, Digital | 1.2V ~ 3.6V | 2.35V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the ADS7886SBDBVR and ADS7866IDBVR?
The ADS7886SBDBVR is a 12-bit, 1-MSPS micropower SAR ADC with a pseudo-differential input, SPI interface, and 2.35 V to 5.25 V supply range in a SOT-23-6 package. The ADS7866IDBVR is a 12-bit, 200-kSPS micropower SAR ADC with a single-ended input, SPI interface, and 1.6 V to 3.6 V supply range in a SOT-23-6 package. The primary differences are sampling rate (1 MSPS vs 200 kSPS), input configuration (pseudo-differential vs single-ended), and supply voltage range.
Are the ADS7886SBDBVR and ADS7866IDBVR pin-compatible?
Both devices are offered in a 6-pin SOT-23 (DBV) package, but pin-compatibility must be confirmed against the respective manufacturer datasheets, as pin functions and supply requirements differ between the two parts. Designers should verify the pinout and supply voltage compatibility before considering a substitution.
What is the maximum sampling rate of each device?
The ADS7886SBDBVR supports a maximum throughput of 1 MSPS. The ADS7866IDBVR supports a maximum throughput of 200 kSPS. The higher sampling rate of the ADS7886SBDBVR makes it suitable for faster signal acquisition applications.
What supply voltage ranges do these ADCs support?
The ADS7886SBDBVR operates from a supply voltage of 2.35 V to 5.25 V. The ADS7866IDBVR operates from a supply voltage of 1.6 V to 3.6 V. The wider and higher supply range of the ADS7886SBDBVR allows operation in 5 V systems, while the ADS7866IDBVR targets lower-voltage, low-power designs.
What input configurations do the ADS7886SBDBVR and ADS7866IDBVR use?
The ADS7886SBDBVR features a pseudo-differential input configuration. The ADS7866IDBVR features a single-ended input configuration. This difference affects how the input signal is referenced and should be considered when selecting a device for a given signal chain.
What digital interface do both ADCs provide?
Both the ADS7886SBDBVR and ADS7866IDBVR provide an SPI-compatible serial digital interface for communication with host controllers. This allows both devices to be used in systems requiring standard serial ADC interfacing.
What package type do the ADS7886SBDBVR and ADS7866IDBVR use?
Both devices are supplied in a 6-pin SOT-23 (DBV) package. The compact package makes both parts suitable for space-constrained designs, though the electrical differences between the two devices must still be evaluated for a given application.
Can the ADS7866IDBVR be used as a drop-in replacement for the ADS7886SBDBVR?
A drop-in replacement is not recommended without validation, because the two devices differ in maximum sampling rate (200 kSPS vs 1 MSPS), input configuration (single-ended vs pseudo-differential), and supply voltage range (1.6 V to 3.6 V vs 2.35 V to 5.25 V). These differences can affect system performance and must be verified against the target design requirements and manufacturer datasheets.