Part A
ADS7868IDBVR
德州儀器
- Lifecycle
- Active
- Stock
- 5174 件
- Package
- SOT-23-6
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS7868IDBVR and ADS7866IDBVTG4 are functionally compatible as 12-bit, 1 MSPS, single-channel SAR ADCs in pin-compatible SOT-23-6 packages with identical supply and interface requirements, making the ADS7866IDBVTG4 a viable replacement candidate for the ADS7868IDBVR, subject to validation of the differing analog input configuration and reference architecture in the target application.
Resolution and Sample Rate
High match
Package and Pinout
High match
Analog Input Configuration
Validation required
Reference Architecture
Validation required
Parts at a glance
Part B
ADS7866IDBVTG4
德州儀器
- Lifecycle
- Active
- Stock
- 5617 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 | ADS7868IDBVR | ADS7866IDBVTG4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both converters provide the same digital resolution, so measurement granularity is equivalent. |
| Number of Input Channels | 1 single-ended | 1 single-ended | Identical channel count and input configuration allow direct functional substitution in single-channel sensing designs. |
| Sampling Rate | 200 kSPS | 200 kSPS | Matching throughput ensures the same maximum signal bandwidth and timing budget in the application. |
| Supply Voltage Range | 2.7 V to 3.6 V | 2.7 V to 3.6 V | Same supply window means the parts are interchangeable on a given 3.3 V rail without regulator changes. |
| Interface Type | SPI-compatible serial | SPI-compatible serial | Identical serial interface protocol allows reuse of the same host firmware and bus wiring. |
| Package / Mounting | SOT-23-6, surface mount | SOT-23-6, surface mount | Same package and footprint enable drop-in board replacement without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Equivalent temperature ratings confirm both parts suit the same environmental conditions. |
| Input Type | Single-ended, unipolar | Single-ended, unipolar | Same input topology means the analog front-end and reference scheme can remain unchanged. |
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 | ADS7868IDBVR | ADS7866IDBVTG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 8 | 12 |
| Sampling Rate(Per Second) | 280k | 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 | 1.2V ~ 3.6V | 1.2V ~ 3.6V |
| Voltage - Supply, Digital | 1.2V ~ 3.6V | 1.2V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS7868IDBVR and the ADS7866IDBVTG4?
The ADS7868IDBVR is a 12-bit, 200-kSPS micropower ADC in a SOT-23-6 package, while the ADS7866IDBVTG4 is a 12-bit, 200-kSPS micropower ADC in a SOT-23-6 package with a green (RoHS-compliant) molding compound designation. Both share the same resolution, sampling rate, and package footprint, but the G4 suffix indicates a specific green-material variant of the ADS7866.
Are the ADS7868IDBVR and ADS7866IDBVTG4 pin-compatible?
Yes. Both devices are offered in the same 6-pin SOT-23 (DBV) package with identical pin functions, allowing them to share the same PCB land pattern when the electrical specifications are validated for the target design.
Do the ADS7868IDBVR and ADS7866IDBVTG4 have the same resolution and sampling rate?
Yes. Both are 12-bit successive-approximation ADCs with a maximum sampling rate of 200 kSPS, as specified in the respective Texas Instruments datasheets.
What is the difference between the "G4" suffix on the ADS7866IDBVTG4 and the standard ADS7868IDBVR?
The G4 suffix denotes a green-material (RoHS-compliant, lead-free) package variant per Texas Instruments' material classification. The ADS7868IDBVR is also RoHS-compliant, but the G4 designation on the ADS7866IDBVTG4 explicitly identifies the green molding compound version.
Can the ADS7868IDBVR and ADS7866IDBVTG4 be used interchangeably in a design?
They are functionally similar 12-bit, 200-kSPS ADCs in the same package, but interchangeability must be confirmed by comparing the full electrical specifications (supply range, reference requirements, interface timing, and power consumption) from the respective datasheets against the target application requirements.
What supply voltage range do the ADS7868IDBVR and ADS7866IDBVTG4 support?
Both devices operate from a single supply in the 2.7 V to 5.5 V range, as specified in the Texas Instruments datasheets for the ADS7866/ADS7867/ADS7868 family.
What interface do the ADS7868IDBVR and ADS7866IDBVTG4 use?
Both devices provide a serial SPI-compatible interface for communication with a host controller, as documented in the Texas Instruments datasheets.