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 ADS7868IDBVTG4 is a functionally equivalent variant of the ADS7868IDBVR, differing only in packaging and ordering quantity. Both parts share the same 8-bit SAR ADC architecture, micro-power operation, and SOT-23-6 footprint, making the TG4 variant a viable replacement candidate where tape-and-reel packaging and RoHS-compliant green molding compound are acceptable.
Resolution and Architecture
High match
Package and Footprint
High match
Supply Voltage Range
High match
Ordering and Packaging
Validation required
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 | ADS7868IDBVR | ADS7868IDBVTG4 | Why it matters |
|---|---|---|---|
| Resolution | 8 bit | 8 bit | Determines the number of discrete levels the ADC can represent; identical resolution means equivalent measurement granularity. |
| Number of Input Channels | 1 single-ended | 1 single-ended | Defines how many analog signals can be sampled; matching channel count ensures the same signal routing architecture can be used. |
| Sampling Rate | 200 kSPS | 200 kSPS | Sets the maximum conversion throughput; identical rates preserve timing behavior in the target system. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Determines compatibility with the system power rail; matching ranges allow direct substitution without supply redesign. |
| Interface Type | SPI / Microwire / QSPI compatible serial | SPI / Microwire / QSPI compatible serial | Defines the digital communication protocol; identical interfaces ensure firmware and host controller compatibility. |
| Package / Case | SOT-23-6 | SOT-23-6 | Affects PCB footprint and assembly; identical packages allow drop-in replacement on the same board layout. |
| Packaging / Reel Option | Tape & Reel (large reel) | Tape & Reel (small reel) | Distinguishes the reel quantity supplied; affects manufacturing line feed and inventory handling but not electrical function. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Specifies the environmental envelope for reliable operation; matching ranges confirm suitability for the same application conditions. |
| Input Type | Single-ended, unipolar | Single-ended, unipolar | Determines signal conditioning requirements; identical input topology means the same analog front-end can be reused. |
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 | ADS7868IDBVTG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 280k | 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 | 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 ADS7868IDBVTG4?
Both parts are functionally identical 8-bit, 1-MSPS, micropower analog-to-digital converters from Texas Instruments in a SOT-23-6 (DBV) package. The primary difference is the ordering and packaging designation: the ADS7868IDBVR is supplied in tape-and-reel format, while the ADS7868IDBVTG4 is supplied in small tape-and-reel format with the "G4" suffix indicating lead-free (RoHS-compliant) construction. Electrical performance and pinout are the same.
Are the ADS7868IDBVR and ADS7868IDBVTG4 electrically interchangeable?
Yes. Both devices share the same datasheet specifications: 8-bit resolution, up to 1 MSPS sampling rate, single 2.7 V to 5.25 V supply, SPI-compatible serial interface, and the same SOT-23-6 pinout. They can be used interchangeably in the same circuit provided the packaging quantity and lead-free requirements of the assembly are satisfied.
What package and pin configuration do these devices use?
Both the ADS7868IDBVR and ADS7868IDBVTG4 are offered in a 6-pin SOT-23 (DBV) package. The pinout includes the analog input, supply, ground, reference, and serial interface signals (CS/SHDN, SCLK, and DOUT), consistent with the ADS7868 datasheet.
What is the difference between the "R" and "TG4" suffixes in the part numbers?
The "R" suffix on ADS7868IDBVR denotes tape-and-reel packaging. The "TG4" suffix on ADS7868IDBVTG4 denotes a small tape-and-reel package with the "G4" lead-free (RoHS) designation. Both suffixes refer to packaging and environmental compliance rather than to any change in the converter's electrical characteristics.
Do both parts support the same supply voltage and sampling rate?
Yes. Per the ADS7868 datasheet, both variants operate from a single supply of 2.7 V to 5.25 V and support sampling rates up to 1 MSPS. The supply range and throughput are identical because the silicon die is the same; only the packaging designation differs.
Which part should be selected for a lead-free (RoHS) production build?
The ADS7868IDBVTG4 carries the "G4" suffix, which designates lead-free (RoHS-compliant) construction, making it the appropriate choice when a documented lead-free part number is required. The ADS7868IDBVR should be evaluated against the current datasheet and manufacturer packaging documentation to confirm its environmental compliance status for the specific build.
Can the ADS7868IDBVR and ADS7868IDBVTG4 be used in the same PCB footprint?
Yes. Both parts use the identical 6-pin SOT-23 (DBV) package with the same pinout, so the PCB land pattern and footprint are the same. Designers can lay out a single footprint that accepts either ordering variant.