Part A
ADS7886SBDBVR
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 3915 PCS
- Package
- SOT-23-6
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7886SBDBVR and ADS7866IDBVRG4 are both 12-bit, 1-MSPS, single-channel SAR analog-to-digital converters in 6-pin SOT-23 packages with a serial SPI interface, making them strong functional replacement candidates. The ADS7866IDBVRG4 is specified across the full -40°C to +85°C industrial temperature range, whereas the ADS7886SBDBVR is rated for -40°C to +125°C, so the ADS7866IDBVRG4 is a viable drop-in substitute where the wider temperature margin is not required. Designers should confirm supply voltage, reference configuration, and timing compatibility against the target application before final qualification.
Resolution and Sample Rate
High match
Package and Pinout
High match
Supply Voltage Range
High match
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADS7866IDBVRG4
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 9976 PCS
- Package
- SOT-23-6
- Series
- 데이터 수집 - 아날로그 변환기(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 | ADS7866IDBVRG4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both are 12-bit ADCs, so resolution is equivalent and does not differentiate substitutability. |
| Sampling Rate | 1 MSPS | 200 kSPS | The ADS7886 supports a much higher throughput, which matters for fast signal acquisition; the ADS7866 is limited to lower-speed applications. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Both are single-channel devices, so channel count is not a differentiator. |
| Input Type | Single-ended, unipolar | Single-ended, unipolar | Identical input configuration means both interface to the same sensor/signal topologies. |
| Supply Voltage | 2.35 V to 5.25 V | 1.6 V to 3.6 V | Different supply ranges affect compatibility with system rails; the ADS7886 tolerates 5 V while the ADS7866 is limited to 3.6 V max. |
| Interface | SPI / QSPI / MICROWIRE / DSP (serial) | SPI / QSPI / MICROWIRE / DSP (serial) | Both use a compatible serial interface, so digital host connectivity is interchangeable. |
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) | Same package footprint allows drop-in PCB replacement without layout changes. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +85 °C | The wider temperature range of the ADS7886 suits harsher environments; the ADS7866 is restricted to standard industrial limits. |
| Power Consumption (typical) | ~13.5 mW at 5 V, 1 MSPS | ~2.4 mW at 3 V, 200 kSPS | Lower power per conversion favors the ADS7866 in battery-powered designs, while the ADS7886 trades power for speed. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7886SBDBVR | ADS7866IDBVRG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 1M | 200k |
| 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 | External |
| 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 ADS7886SBDBVR and the ADS7866IDBVRG4?
The ADS7886SBDBVR is a 12-bit, 1-MSPS micropower SAR ADC in a SOT-23-6 package, while the ADS7866IDBVRG4 is a 12-bit, 200-kSPS SAR ADC in a SOT-23-6 package. The primary differences are sampling rate (1 MSPS vs 200 kSPS), supply current, and the G4 (green/RoHS-compliant) designation on the ADS7866IDBVRG4.
Are the ADS7886SBDBVR and ADS7866IDBVRG4 pin-compatible?
Both devices are offered in a 6-pin SOT-23 (DBV) package with the same pinout (VDD, GND, CS, SCLK, SDO, and analog input). However, pin compatibility should be confirmed against the respective manufacturer datasheets before substitution, since electrical specifications differ.
What is the maximum sampling rate of each device?
The ADS7886SBDBVR supports a maximum throughput of 1 MSPS. The ADS7866IDBVRG4 supports a maximum throughput of 200 kSPS. The higher sampling rate of the ADS7886SBDBVR makes it suitable for faster signal acquisition applications.
What is the resolution and interface type of these ADCs?
Both the ADS7886SBDBVR and ADS7866IDBVRG4 are 12-bit successive-approximation register (SAR) ADCs with a serial SPI-compatible interface. They provide a single-ended analog input and communicate via CS, SCLK, and SDO pins.
What are the supply voltage and power consumption characteristics?
Both devices operate from a single 2.7 V to 5.25 V supply. The ADS7886SBDBVR is specified as a micropower device with low supply current at 1 MSPS, while the ADS7866IDBVRG4 draws lower current at its 200-kSPS rate. Exact current and power figures should be taken from the respective manufacturer datasheets.
What does the G4 suffix on the ADS7866IDBVRG4 indicate?
The G4 suffix denotes a green, RoHS-compliant package option from Texas Instruments, indicating lead-free (Pb-free) construction and compliance with RoHS environmental requirements. The ADS7886SBDBVR is also offered in RoHS-compliant packaging per its datasheet.
Can the ADS7866IDBVRG4 be used as a drop-in replacement for the ADS7886SBDBVR?
Not as a direct drop-in replacement without validation. Although both are 12-bit SAR ADCs in a 6-pin SOT-23 package, the ADS7866IDBVRG4 has a lower maximum sampling rate (200 kSPS vs 1 MSPS) and different timing and current specifications. The system timing, throughput requirements, and firmware must be verified against the ADS7866 datasheet before substitution.
Which applications are better suited to each device?
The ADS7886SBDBVR, with its 1-MSPS throughput, suits faster data-acquisition, motor control, and high-speed sensing applications. The ADS7866IDBVRG4, with its 200-kSPS rate and low power, suits portable, battery-powered, and lower-bandwidth measurement systems where reduced power consumption is prioritized.