Part A
ADS1100A0IDBVR
Texas Instruments
- Lifecycle
- Active
- Stock
- 1300 PCS
- Package
- SOT-23-6
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS1100A0IDBVR and ADS1100A2IDBVTG4 are functionally compatible 16-bit delta-sigma ADCs sharing the same I2C interface, SOT-23-6 package, and pinout, with the primary distinction being the factory-programmed I2C slave address and the associated ordering suffix. Designers can treat the A2 variant as a drop-in functional substitute for the A0 variant provided the system firmware is updated to the alternate I2C address and the tape-and-reel packaging difference is acceptable for the assembly line.
Resolution and ADC Architecture
High match
Package and Pinout
High match
I2C Slave Address
Validation required
Supply Voltage Range
High match
Parts at a glance
Part B
ADS1100A2IDBVTG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 8126 PCS
- Package
- SOT-23-6
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (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 | ADS1100A0IDBVR | ADS1100A2IDBVTG4 | Why it matters |
|---|---|---|---|
| Resolution (bits) | 16 | 16 | Both are 16-bit delta-sigma ADCs, so resolution is identical and not a differentiator. |
| Gain (PGA setting) | 1 | 4 | The A0 variant has a fixed gain of 1, while the A2 variant has a fixed gain of 4; this directly changes the input range and sensitivity, making them non-interchangeable for a given signal level. |
| Input type | Differential | Differential | Both accept differential inputs, so the input topology is the same. |
| Data rate (SPS) | 8 to 128 (selectable) | 8 to 128 (selectable) | Both support the same selectable output data rates, so throughput capability is equivalent. |
| Supply voltage range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Identical supply range means both can operate from the same system rails. |
| Interface | I2C | I2C | Both use an I2C-compatible serial interface, so bus compatibility is the same. |
| Package / mounting | SOT-23-6 (SMD) | SOT-23-6 (SMD) | Same package and mounting type allow drop-in PCB footprint compatibility. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings mean both suit the same environmental conditions. |
| Full-scale input range (with gain) | ±VDD (gain 1) | ±VDD/4 (gain 4) | The gain difference changes the effective full-scale input range, so the A2 variant is suited to smaller signals while the A0 variant handles larger signals. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1100A0IDBVR | ADS1100A2IDBVTG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 128 | 128 |
| Number of Inputs | 1 | 1 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | I²C | I²C |
| Configuration | PGA-ADC | PGA-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | Supply | Supply |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Features | PGA | PGA, Selectable Address |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS1100A0IDBVR and the ADS1100A2IDBVTG4?
Both are 16-bit, single-channel, delta-sigma analog-to-digital converters from Texas Instruments in a SOT-23-6 package. The primary differences are the programmable gain amplifier (PGA) setting and the ordering/package option. The ADS1100A0IDBVR is specified with a PGA gain of 1 (A0 variant) and is supplied in a reel (R suffix), while the ADS1100A2IDBVTG4 is the A2 variant with a PGA gain of 4 and is supplied in a small tape-and-reel (T suffix) with a Pb-free/RoHS-compliant G4 designation.
What is the PGA gain setting for each device?
The ADS1100A0IDBVR (A0 variant) has a fixed PGA gain of 1. The ADS1100A2IDBVTG4 (A2 variant) has a fixed PGA gain of 4. These gain settings are factory-configured and cannot be changed by the user.
Are the ADS1100A0IDBVR and ADS1100A2IDBVTG4 pin-compatible?
Yes. Both devices are offered in the same 6-pin SOT-23 (DBV) package with identical pin functions: VDD, GND, AIN0/AIN1 differential inputs, SCL, and SDA. They share the same I2C-compatible interface and footprint, so they are pin-compatible and can use the same PCB land pattern.
What is the resolution and data rate of these ADCs?
Both the ADS1100A0IDBVR and ADS1100A2IDBVTG4 are 16-bit delta-sigma ADCs. The output data rate is programmable via the I2C interface to 8, 16, 32, or 128 samples per second (SPS).
What supply voltage range do these devices support?
Both devices operate from a single supply voltage of 2.7 V to 5.5 V, making them suitable for low-voltage and battery-powered applications.
What is the difference between the R and T ordering suffixes?
The R suffix on the ADS1100A0IDBVR indicates a standard reel packaging quantity, while the T suffix on the ADS1100A2IDBVTG4 indicates a small tape-and-reel packaging quantity. The G4 suffix on the ADS1100A2IDBVTG4 denotes Pb-free/RoHS-compliant construction. Both are the same die and package; only the packaging and environmental designation differ.
Can the ADS1100A0IDBVR be substituted with the ADS1100A2IDBVTG4 in an existing design?
Substitution is possible only if the design can accommodate the different PGA gain (1 vs. 4), which changes the full-scale input range and effective resolution. Because the devices are pin-compatible and share the same interface and package, the substitution is electrically feasible, but the system's input signal range and calibration must be revalidated against the A2 variant's gain of 4 before use.
What interface do these ADCs use for communication?
Both devices use an I2C-compatible two-wire serial interface (SCL and SDA) supporting standard and fast modes, allowing connection to most microcontrollers and digital systems.