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 ADS7868IDBVTG4 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 functionally interchangeable for most designs. The primary distinction is the supply voltage range: the ADS7886SBDBVR operates from 2.35 V to 5.25 V, while the ADS7868IDBVTG4 is specified for 2.7 V to 5.25 V, so systems running below 2.7 V must validate the narrower operating window before substituting.
Resolution and Sample Rate
High match
Package Type
High match
Supply Voltage Range
Validation required
Interface Type
High match
Parts at a glance
Part B
ADS7868IDBVTG4
德州儀器
- Lifecycle
- Active
- Stock
- 7660 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 | ADS7868IDBVTG4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both converters provide the same 12-bit resolution, so quantization step size and achievable dynamic range are equivalent. |
| Sampling Rate | 1 MSPS | 1 MSPS | Identical maximum throughput means either part can support the same signal bandwidth and system timing budget. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Both are single-channel devices, so channel count and input multiplexing requirements are the same. |
| Input Type | Single-ended, unipolar | Single-ended, unipolar | Matching input topology allows the same analog front-end and reference scheme to be reused. |
| Supply Voltage | 2.35 V to 5.25 V | 2.35 V to 5.25 V | The same supply range means either part can operate from the same rail without regulator changes. |
| Interface | SPI (serial) | SPI (serial) | A common serial interface ensures the same host controller and firmware can drive either device. |
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) | Identical package and pinout allow a drop-in footprint replacement on the PCB. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +85 °C | The wider temperature range of the ADS7886SBDBVR supports harsher environments, so it is the safer choice for extended-temperature applications. |
| Reference | External reference | External reference | Both require an external reference, so the same reference circuit and accuracy budget apply to either part. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7886SBDBVR | ADS7868IDBVTG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| 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 | 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 ADS7868IDBVTG4?
The ADS7886SBDBVR is a 12-bit, 1-MSPS micropower SAR ADC in a SOT-23-6 package, while the ADS7868IDBVTG4 is an 8-bit, 1.2-MSPS SAR ADC in a SOT-23-6 package. The primary differences are resolution (12-bit vs 8-bit), sampling rate (1 MSPS vs 1.2 MSPS), and supply/serial interface details as specified in their respective datasheets.
Are the ADS7886SBDBVR and ADS7868IDBVTG4 pin-compatible?
Both devices are offered in a 6-pin SOT-23 (DBV) package, but pin compatibility must be confirmed against the manufacturer pinout diagrams. The ADS7886 and ADS7868 share a similar serial interface family, yet designers should verify each pin function (VDD, GND, CS, SCLK, SDO, and analog input) in the official datasheets before considering a drop-in replacement.
What is the resolution and sampling rate of each device?
The ADS7886SBDBVR provides 12-bit resolution with a throughput of up to 1 MSPS. The ADS7868IDBVTG4 provides 8-bit resolution with a throughput of up to 1.2 MSPS. These values are stated in the respective Texas Instruments datasheets.
What supply voltage range do these ADCs require?
Both the ADS7886 and ADS7868 operate from a single 2.7 V to 5.25 V supply, as specified in their datasheets. The digital interface logic levels track the supply voltage, so the host controller I/O must be compatible with the selected VDD.
What serial interface do the ADS7886SBDBVR and ADS7868IDBVTG4 use?
Both devices use a SPI-compatible serial interface with chip select (CS), serial clock (SCLK), and serial data output (SDO) signals. This allows connection to most microcontrollers and DSPs without additional glue logic, per the manufacturer datasheets.
Can the ADS7868IDBVTG4 be used as a replacement for the ADS7886SBDBVR in an existing design?
Not directly without validation. Although both are 6-pin SOT-23 SAR ADCs with SPI interfaces, the ADS7868 offers 8-bit resolution versus 12-bit on the ADS7886, and the sampling rates differ (1.2 MSPS vs 1 MSPS). System accuracy, code width, and timing budgets must be re-evaluated against the target design requirements before substitution.
What are the typical applications for these ADCs?
Both devices are suited to low-power, space-constrained data acquisition such as portable instrumentation, battery-powered sensors, and industrial monitoring. The ADS7886SBDBVR is preferred where 12-bit accuracy is needed, while the ADS7868IDBVTG4 suits applications requiring 8-bit resolution at a slightly higher throughput, per the manufacturer documentation.