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 ADS7866IDBVTG4 is a functionally equivalent variant of the ADS7866IDBVR, differing only in packaging format (tape-and-reel versus small tape-and-reel) while sharing identical die, electrical specifications, and pinout. Both parts are interchangeable for design and production purposes, with the G4 suffix denoting a lead-free/RoHS-compliant tape-and-reel option rather than any functional deviation.
Resolution and Architecture
High match
Package and Pinout
High match
Supply Voltage Range
High match
Operating Temperature Range
High match
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 | ADS7866IDBVR | ADS7866IDBVTG4 | 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 application. |
| 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 controller compatibility and firmware requirements; matching interfaces allow drop-in digital integration. |
| 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 supply design can be reused. |
| Package / Mounting | SOT-23-6, Surface Mount | SOT-23-6, Surface Mount | Affects PCB footprint and assembly; identical package and mounting allow direct board-level substitution. |
| Packaging / Ordering Quantity | Tape & Reel (large reel) | Tape & Reel (small reel) | Distinguishes reel size and order quantity; functionally identical but affects procurement and production line feeding. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Specifies environmental limits for reliable operation; matching ranges ensure equivalent robustness in the field. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7866IDBVR | ADS7866IDBVTG4 |
|---|---|---|
| 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 are the key differences between the ADS7866IDBVR and the ADS7866IDBVTG4?
Both parts are functionally identical 12-bit, 200-kSPS, 1.2-V to 3.6-V micropower analog-to-digital converters in a 6-pin SOT-23 (DBV) package. The primary difference is the ordering and packaging designation: the ADS7866IDBVR is supplied in tape-and-reel format, while the ADS7866IDBVTG4 is supplied in small tape-and-reel quantities and carries the "G4" suffix indicating lead-free (Pb-free) RoHS-compliant construction per Texas Instruments' ordering nomenclature.
Are the ADS7866IDBVR and ADS7866IDBVTG4 electrically and functionally interchangeable?
Yes. Both devices share the same datasheet specifications: 12-bit resolution, up to 200 kSPS throughput, single-supply operation from 1.2 V to 3.6 V, SPI-compatible serial interface, and the same 6-pin SOT-23 (DBV) pinout. They differ only in packaging/ordering options, so they are interchangeable in circuit design provided the assembly process matches the lead-free (G4) status of the specific orderable part.
What is the difference between the "R" and "T" suffixes in the ADS7866IDBVR and ADS7866IDBVTG4 part numbers?
In Texas Instruments' ordering nomenclature, the "R" suffix denotes a large tape-and-reel quantity (typically 3,000 units per reel for the DBV package), while the "T" suffix denotes a small tape-and-reel quantity (typically 250 units per reel). The "G4" suffix indicates lead-free (Pb-free) RoHS-compliant construction. Both parts are the same silicon die in the same package.
What are the power supply and performance specifications common to both parts?
Both the ADS7866IDBVR and ADS7866IDBVTG4 operate from a single supply of 1.2 V to 3.6 V, consume approximately 0.5 mW at 200 kSPS and 3 V, provide 12-bit resolution with no missing codes, and offer an SPI-compatible serial interface. These parameters are identical because both orderable parts are the same device.
Does the "G4" suffix on the ADS7866IDBVTG4 indicate a different die or performance grade?
No. The "G4" suffix is a Texas Instruments ordering code indicating lead-free (Pb-free) RoHS-compliant construction. It does not indicate a different silicon die, speed grade, or accuracy grade. The ADS7866IDBVTG4 and ADS7866IDBVR share the same electrical specifications as documented in the ADS7866 datasheet.
Can the ADS7866IDBVR and ADS7866IDBVTG4 be used interchangeably in a production BOM?
Yes, from an electrical and footprint standpoint they are interchangeable because both are the same 6-pin SOT-23 (DBV) device with identical pinout and specifications. The choice between them is driven by reel quantity (R = large reel, T = small reel) and the lead-free (G4) designation required by the assembly process. Verify the specific orderable part's packaging and Pb-free status against the manufacturer's datasheet before finalizing the BOM.
What package do the ADS7866IDBVR and ADS7866IDBVTG4 use, and is it RoHS compliant?
Both parts use the 6-pin SOT-23 package, designated "DBV" in the Texas Instruments part number. The ADS7866IDBVTG4 carries the "G4" suffix, which denotes lead-free (Pb-free) RoHS-compliant construction. The ADS7866IDBVR is the standard tape-and-reel orderable part; its Pb-free/RoHS status should be confirmed against the specific manufacturer datasheet and ordering information for the exact lot.