Part A
ADS7866IDBVR
德州儀器
- Lifecycle
- Active
- Stock
- 1287 件
- Package
- SOT-23-6
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS7866IDBVRG4 is a functionally equivalent variant of the ADS7866IDBVR, differing only in the G4 lead-finish designation. Both parts share identical core specifications, making the G4 version a viable replacement candidate where the lead-free finish is acceptable.
Resolution and Architecture
High match
Package and Pinout
High match
Supply Voltage and Interface
High match
Lead Finish and Compliance
Validation required
Parts at a glance
Part B
ADS7866IDBVRG4
德州儀器
- Lifecycle
- Active
- Stock
- 9976 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 | ADS7866IDBVR | ADS7866IDBVRG4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the quantization step and achievable measurement precision; identical resolution means equivalent accuracy potential. |
| Sampling Rate | 200 kSPS | 200 kSPS | Sets the maximum signal bandwidth the ADC can digitize; matching rates ensure equivalent throughput in the target system. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Defines how many analog signals can be measured; identical channel count preserves system architecture compatibility. |
| Interface Type | SPI / Serial | SPI / Serial | Determines host communication protocol; matching interfaces allow drop-in replacement without firmware changes. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating power range; identical ranges ensure the same power rail can be reused. |
| Package / Case | SOT-23-6 | SOT-23-6 | Determines PCB footprint and assembly; identical packages allow direct board-level substitution. |
| Mounting Type | Surface Mount | Surface Mount | Affects assembly process and board design; matching mounting type preserves manufacturability. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Defines environmental limits for reliable operation; identical ranges ensure equivalent application suitability. |
| Packaging / Ordering Suffix | Tape & Reel (R suffix) | Tape & Reel, G4 (green/RoHS variant) | The G4 suffix denotes a lead-free/RoHS-compliant variant; functionally equivalent but relevant for compliance and procurement requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7866IDBVR | ADS7866IDBVRG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 200k | 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 | External | 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 is the difference between ADS7866IDBVR and ADS7866IDBVRG4?
The ADS7866IDBVR and ADS7866IDBVRG4 are functionally identical analog-to-digital converters. The "G4" suffix is a Texas Instruments environmental/quality designation indicating the device is manufactured in a lead-free (Pb-free) process and is RoHS-compliant. Both are the same ADS7866 converter in a SOT-23-6 (DBV) package supplied in tape-and-reel (R) form.
Are the ADS7866IDBVR and ADS7866IDBVRG4 electrically and functionally interchangeable?
Yes. Both parts share the same core specifications: a 12-bit resolution, 1 MSPS maximum sampling rate, single 2.7 V to 3.6 V supply, and a serial SPI-compatible interface in a 6-pin SOT-23 package. The only documented distinction is the G4 lead-free/RoHS manufacturing designation, so they are interchangeable in terms of electrical function and footprint.
What are the key performance specifications of the ADS7866?
The ADS7866 is a 12-bit successive-approximation ADC with a maximum throughput of 1 MSPS, operating from a single 2.7 V to 3.6 V supply. It features a pseudo-differential input, an SPI/QSPI/MICROWIRE-compatible serial interface, and is specified for operation over the -40°C to +85°C industrial temperature range in a 6-pin SOT-23 (DBV) package.
Does the G4 suffix change the package or pinout?
No. Both ADS7866IDBVR and ADS7866IDBVRG4 use the same DBV (SOT-23-6) package with identical pin assignments. The G4 designation reflects lead-free/RoHS compliance of the package and does not alter the mechanical footprint or pin functions.
Which part should be selected for a RoHS-compliant or lead-free design?
The ADS7866IDBVRG4 should be selected when a lead-free, RoHS-compliant device is required, as the G4 suffix explicitly denotes the Pb-free/RoHS manufacturing designation. The ADS7866IDBVR is the standard ordering code without that explicit G4 designation.
Are both parts supplied in the same tape-and-reel packaging?
Yes. Both the ADS7866IDBVR and ADS7866IDBVRG4 carry the "R" suffix, indicating tape-and-reel packaging for automated assembly. The reel and quantity-per-reel are consistent between the two ordering codes, with the G4 version differing only in its lead-free/RoHS designation.
Can the ADS7866IDBVRG4 be used as a drop-in replacement for the ADS7866IDBVR?
Yes, in most cases. Because both share identical electrical specifications, package, and pinout, the G4 version can serve as a drop-in replacement for the non-G4 version. Designers should confirm the lead-free/RoHS requirement and verify solder process compatibility with their assembly flow before substituting.