Part A
ADS1100A1IDBVR
德州儀器
- Lifecycle
- Active
- Stock
- 1553 件
- Package
- SOT-23-6
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS1100A3IDBVRG4 is a functionally compatible replacement candidate for the ADS1100A1IDBVR, sharing the same I2C interface, SOT-23-6 package, and 16-bit delta-sigma ADC architecture. The only meaningful distinction is the factory-programmed I2C slave address, which requires validation against the existing bus addressing scheme before substitution.
I2C Slave Address
Validation required
Package Type
High match
Resolution and Interface
High match
Supply Voltage Range
High match
Parts at a glance
Part B
ADS1100A3IDBVRG4
德州儀器
- Lifecycle
- Active
- Stock
- 4692 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 | ADS1100A1IDBVR | ADS1100A3IDBVRG4 | Why it matters |
|---|---|---|---|
| Resolution (bits) | 16 | 16 | Both are 16-bit delta-sigma ADCs, so resolution is identical and not a differentiator. |
| Programmable Gain Amplifier (PGA) settings | 1, 2, 4, 8 | 1, 2, 4, 8 | PGA range determines the smallest full-scale input voltage and thus the effective LSB size for low-level signals. |
| Data rate (SPS) | 8, 16, 32, 128 | 8, 16, 32, 128 | Output data rate affects conversion speed versus noise trade-off; identical rates mean equivalent throughput behavior. |
| Supply voltage range (V) | 2.7 to 5.5 | 2.7 to 5.5 | Supply range determines compatibility with 3.3 V and 5 V systems; both support the same rails. |
| Interface | I2C (2-wire) | I2C (2-wire) | The communication protocol must match the host bus; both use I2C, so they are drop-in compatible on the bus. |
| Input type | Differential | Differential | Differential inputs reject common-mode noise; identical input topology preserves signal conditioning design. |
| Package / mounting | SOT-23-6, surface mount | SOT-23-6, surface mount | Package and footprint must match for PCB layout compatibility; both are SOT-23-6 SMD. |
| Operating temperature range (°C) | -40 to 85 | -40 to 85 | Temperature range defines the environments where the part is guaranteed; identical ranges mean equal application coverage. |
| Internal reference | Yes (on-chip) | Yes (on-chip) | An internal reference simplifies design and reduces external components; both include it, preserving BOM simplicity. |
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 | ADS1100A1IDBVR | ADS1100A3IDBVRG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Obsolete |
| 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, Selectable Address | PGA, Selectable Address |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS1100A1IDBVR and ADS1100A3IDBVRG4?
Both are 16-bit, single-channel, delta-sigma analog-to-digital converters from Texas Instruments in a SOT-23-6 package. The primary difference is the factory-programmed PGA gain setting: the ADS1100A1IDBVR is configured for a gain of 1, while the ADS1100A3IDBVRG4 is configured for a gain of 8. The "G4" suffix on the ADS1100A3IDBVRG4 denotes a green/RoHS-compliant molding compound qualification per TI's part numbering convention.
Are the ADS1100A1IDBVR and ADS1100A3IDBVRG4 pin-compatible?
Yes. Both devices share the same SOT-23-6 (DBV) package and identical pinout: VDD, GND, VIN+ (A0), VIN- (A1), SCL, and SDA. They can occupy the same PCB land pattern, but the gain difference must be accounted for in the system's measurement scaling.
What is the resolution and data rate of these ADCs?
Both the ADS1100A1IDBVR and ADS1100A3IDBVRG4 are 16-bit delta-sigma ADCs with selectable data rates of 8 SPS, 16 SPS, 32 SPS, and 128 SPS, programmable via the I2C interface configuration register.
What supply voltage and interface do these devices support?
Both parts operate from a single supply of 2.7 V to 5.5 V and communicate over an I2C-compatible serial interface supporting standard, fast, and high-speed modes. They also feature a programmable gain amplifier and continuous self-calibration.
Can the ADS1100A1IDBVR be replaced by the ADS1100A3IDBVRG4 in an existing design?
Only if the design can accommodate the different PGA gain. The ADS1100A3IDBVRG4 has a fixed gain of 8 versus gain of 1 on the ADS1100A1IDBVR, which changes the full-scale input range and the digital output scaling. The I2C address and package are identical, so firmware gain assumptions and analog front-end levels must be revalidated before substitution.
What is the input full-scale range difference caused by the gain settings?
With a gain of 1, the ADS1100A1IDBVR accepts a differential input up to approximately ±VDD (subject to absolute input voltage limits). With a gain of 8, the ADS1100A3IDBVRG4 has a proportionally smaller full-scale differential input range, making it suited to lower-level sensor signals. Designers should confirm exact limits against the TI datasheet for the chosen supply voltage.
Does the "G4" suffix on the ADS1100A3IDBVRG4 indicate a functional difference?
No. Per Texas Instruments part numbering, the G4 suffix designates green (RoHS-compliant, lead-free) package construction and does not alter electrical function. The functional distinction between the two parts remains the factory-set PGA gain (A1 = gain 1, A3 = gain 8).
What applications are each variant best suited for?
The ADS1100A1IDBVR (gain 1) suits higher-level differential signals near the supply rail, while the ADS1100A3IDBVRG4 (gain 8) suits low-amplitude sensor outputs such as bridge or thermocouple signals where pre-amplification improves effective resolution. Both are commonly used in portable instrumentation, temperature sensing, and industrial process control.