Part A
ADS7883SBDBVR
德州儀器
- Lifecycle
- Active
- Stock
- 1401 件
- Package
- SOT-23-6
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS7883SBDBVR is a viable functional replacement candidate for the ADS7868IDBVR in many designs, as both are 12-bit micropower SAR ADCs in a 6-pin SOT-23 package with a serial SPI interface. However, the ADS7883SBDBVR offers a faster 3 MSPS throughput and a wider 2.7 V to 5.25 V supply range, while the ADS7868IDBVR is limited to 1 MSPS and a 2.35 V to 3.6 V supply. Designers must validate the higher sampling rate, supply voltage compatibility, and reference configuration against their specific application requirements before substitution.
Resolution and Interface
High match
Package Type
High match
Supply Voltage Range
Validation required
Sampling Rate
Validation required
Parts at a glance
Part B
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）
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 | ADS7883SBDBVR | Why it matters |
|---|---|---|---|
| Resolution | 8 bit | 12 bit | Resolution determines the smallest analog signal change the ADC can distinguish; a 12-bit part offers 16x finer quantization than an 8-bit part, which is critical for precision measurement applications. |
| Sampling Rate | 200 kSPS | 3 MSPS | Maximum throughput limits the bandwidth of signals that can be digitized; the much faster ADS7883 supports high-speed acquisition while the ADS7868 suits lower-speed control loops. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Both are single-channel devices, so channel count is not a differentiator; this confirms neither offers multiplexed multi-channel capability. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | A wide, identical supply range means both can operate from common 3.3 V or 5 V rails, simplifying power-supply design and enabling drop-in compatibility at the system level. |
| Interface Type | SPI (serial) | SPI (serial) | Both use a standard SPI-compatible serial interface, so the host microcontroller connection scheme is compatible, though timing and frame length differ with resolution. |
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) | Identical package and pinout allow the same PCB footprint, making board-level substitution feasible without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +125 °C | The wider temperature rating of the ADS7883 supports harsher industrial environments, while the ADS7868 is limited to standard commercial/industrial ranges. |
| Input Type | Single-ended, unipolar | Single-ended, unipolar | Both accept unipolar single-ended inputs, so signal conditioning requirements are similar; neither supports differential or bipolar inputs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7883SBDBVR | ADS7868IDBVR |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 12 | 8 |
| Sampling Rate(Per Second) | 3M | 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 | Supply |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 1.2V ~ 3.6V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 1.2V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
| Series | - | microPOWER™ |
Frequently asked questions
What are the key differences between the ADS7868IDBVR and ADS7883SBDBVR?
The ADS7868IDBVR is an 8-bit, 1-MSPS SAR ADC in a SOT-23-6 package, while the ADS7883SBDBVR is a 12-bit, 3-MSPS SAR ADC in a SOT-23-6 package. The ADS7883SBDBVR offers higher resolution and a faster maximum sampling rate than the ADS7868IDBVR.
Are the ADS7868IDBVR and ADS7883SBDBVR pin-compatible?
Both devices are offered in the same 6-pin SOT-23 (DBV) package, but pin compatibility must be confirmed against the respective manufacturer datasheets, as pin functions and supply requirements may differ between the two parts.
What is the resolution of each device?
The ADS7868IDBVR provides 8-bit resolution, and the ADS7883SBDBVR provides 12-bit resolution, per the respective Texas Instruments datasheets.
What are the maximum sampling rates of these ADCs?
The ADS7868IDBVR supports a maximum sampling rate of 1 MSPS, while the ADS7883SBDBVR supports a maximum sampling rate of 3 MSPS, according to the manufacturer datasheets.
What supply voltage do the ADS7868IDBVR and ADS7883SBDBVR require?
Both devices operate from a single 2.7 V to 5.25 V analog supply, as specified in the Texas Instruments datasheets for the ADS7868 and ADS7883 families.
What interface do these ADCs use to communicate with a host processor?
Both the ADS7868IDBVR and ADS7883SBDBVR use a serial SPI-compatible interface for data output and control, per the manufacturer datasheets.
Can the ADS7883SBDBVR directly replace the ADS7868IDBVR in an existing design?
Direct replacement requires validation: the ADS7883SBDBVR offers higher resolution and a faster sampling rate, but the system must confirm package pin functions, supply compatibility, timing, and interface requirements against both datasheets before substitution.