ADS7883SBDBVR - 12-Bit 3MSPS Serial SAR ADC | Texas Instruments
MPN: ADS7883SBDBVR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.1 | $4.10 |
| 10 | $3.69 | $36.90 |
| 100 | $3.15 | $315.00 |
| 500 | $2.62 | $1,310.00 |
| 1,000 | $2.21 | $2,210.00 |
ADS7883SBDBVR Overview
A SAR ADC is a type of analog-to-digital converter that uses a binary-search algorithm through an internal capacitive DAC and comparator to digitize an analog input one bit per clock cycle. Compared with delta-sigma ADCs, SAR ADCs offer deterministic latency, single-conversion latency (no pipeline delay), and superior behavior for multi-channel multiplexed systems. The SAR architecture sits in the broader hierarchy of ADC architectures alongside flash, sigma-delta, and pipeline converters; within TI's data-converter portfolio, the ADS7883 belongs to the low-power, miniature SAR family targeting space-constrained sensor-interface designs.
Key features include a zero-latency conversion (CS-controlled serial interface compatible with SPI, QSPI, MICROWIRE, and most DSP serial ports), an inherent sample-and-hold input, a wide input range of 0 V to VREF (or 0 V to AVDD when using AVDD as reference), and an AVDD-referenced reference input. The SOT-23-6 (DBV) footprint is one of the smallest SAR ADC packages on the market, enabling high-density designs such as portable instrumentation, sensor modules, and optical encoders.
The device uses a switched-capacitor architecture with internal clock generation per two that power consumption scales with throughput - at 1 MSPS the supply current drops to roughly 1.5 mA, making it attractive for battery-powered systems. An external serial clock (SCLK) and chip-select (CS) provide glueless processor interfacing, and the SDO output can return to high-impedance when CS is high to allow multi-device SPI bus sharing.
Typical applications include optical encoders (angular position sensing), position sensors in industrial automation, portable medical instrumentation (blood-pressure monitors, glucose meters), handheld multimeters, and any space-constrained mixed-signal system requiring 12-bit precision at multi-MSPS throughput. Industrial use cases are well served by the -40 °C to +85 °C operating range of the standard grade.
When designing with the ADS7883, place the analog input decoupling capacitor (typically 10 nF to 100 nF in series with the input) and the AVDD bypass capacitor (1 µF) as close to the package as possible. Designers should also verify that the host SPI controller can support the SDO chosen, which is determined by the SCLK chosen, the choice of SCLK fall or rise data launch, and the chosen CS timing relative to the SCLK cycle.
Drop-in alternatives for ADS7883SBDBVR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADS7883SBDBVR (same form factor and footprint) — differing in Input Type, Operating Temperature Range, Package, Resolution, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADS7883SBDBVT
✅ Drop-In📋 Reference alternative (not in catalog)
ADS7888SDBVT
✅ Drop-In📋 Reference alternative (not in catalog)
ADS7887SDBVR
✅ Drop-In📋 Reference alternative (not in catalog)
ADS7887MDBVT
✅ Drop-In📋 Reference alternative (not in catalog)
ADS7868IDBVR
✅ Drop-In📋 Reference alternative (not in catalog)
ADCS7476AIMF/NOPB
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →ADS7883SBDBVR Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Sample Rate (max) | 3 MSPS |
| Number of Input Channels | 1 |
| Architecture | SAR (Successive Approximation Register) |
| Analog Supply Voltage (AVDD) | 2.7 V to 5.5 V |
| Digital I/O Supply Voltage (DVDD) | 1.65 V to AVDD |
| Supply Current at 3 MSPS (3 V) | 2.7 mA typical |
| Analog Input Range | 0 V to VREF (or 0 V to AVDD) |
| Reference Input | AVDD-referenced (internal), or external via REF pin |
| Interface | Serial (SPI/QSPI/MICROWIRE-compatible) |
| Input Type | Single-ended, pseudo-bipolar |
| Package | SOT-23-6 (DBV) |
| Operating Temperature Range | -40 °C to +85 °C (SB grade is -40 to +125) |
| Sample-and-Hold | Internal |
| RoHS Status | Compliant |
ADS7883SBDBVR Pin Configuration
| Pin 1 | AVDD — Analog power supply input (2.7 V to 5.5 V); also functions as reference when REF not used |
| Pin 2 | AIN — Analog input (single-ended, 0 V to VREF or 0 V to AVDD) |
| Pin 3 | GND — Ground (analog and digital common) |
| Pin 4 | SDO — Serial data output; high-impedance when CS is high |
| Pin 5 | SCLK — Serial clock input (SPI/QSPI/MICROWIRE-compatible) |
| Pin 6 | CS — Chip-select (active low); controls conversion and frame |
Typical Applications
ADS7883SBDBVR is suitable for 6 applications: Optical Encoder / Position Sensing, Portable Medical Instrumentation, Handheld Digital Multimeters and Test Equipment, Industrial Sensor Signal Conditioning, Motor Control Feedback Loops, Battery-Powered IoT Sensor Hubs.
Optical Encoder / Position Sensing
The ADS7883SBDBVR's 3 MSPS throughput and 12-bit resolution fit optical-encoder and position-sensing modules where a photodiode signal must be sampled at multi-MHz rates to resolve angular position. The SAR architecture provides zero-latency conversion, ensuring that the SCLK-synchronized conversion timing does not require the host to wait through a pipeline delay. The SOT-23-6 footprint enables PCB placement directly next to the photodiode array, minimizing analog-input trace length and preserving the SNR budget. Designers typically pair this ADC with a transimpedance amplifier (such as OPA376) to convert the photodiode current to a voltage within the ADC's 0-V-to-AVDD input range.
Recommended
Portable Medical Instrumentation
The ADS7883SBDBVR's 2.7 mA typical current at 3 V supply and SOT-23-6 footprint suit handheld medical instruments such as blood-pressure monitors, glucose meters, and pulse oximeters. The 2.7 V to 5.5 V supply range allows the ADC to share a lithium-battery stack directly with a low-cost LDO, minimizing total-system BoM. The SAR architecture's deterministic latency simplifies FDA-compliant software design because conversion results are guaranteed to be ready within a fixed SCLK cycle count. Designers commonly pair this ADC with an MSP430 or PIC microcontroller and a precision instrumentation front-end such as the INA333.
Recommended
Handheld Digital Multimeters and Test Equipment
The ADS7883SBDBVR delivers 12-bit precision at multi-MSPS throughput for handheld multimeters, bench DMMs, and portable data-acquisition modules. The wide 2.7 V to 5.5 V supply range simplifies USB-powered and battery-powered designs because the ADC can be powered directly from a 3.3 V or 5 V rail without requiring a separate analog LDO. The SPI-compatible serial interface allows glueless connection to most low-pin-count microcontrollers, keeping total BOM cost low for cost-sensitive test gear. The SB temperature range of -40 °C to +125 °C supports field-deployed instruments operating in extreme environments.
Recommended
Industrial Sensor Signal Conditioning
The ADS7883SBDBVR is a strong match for industrial sensor signal-conditioning modules that digitize analog outputs from strain gauges, RTDs, thermocouples, and bridge-type pressure sensors. Its single-ended 0-V-to-AVDD analog input simplifies equipment interfacing to unipolar sensor signals, while its 12-bit resolution provides sufficient dynamic range for most industrial measurement loops. The SAR architecture's inherent sample-and-hold and deterministic latency make it easier to synchronize ADC sampling with sensor excitation, which is critical for ratiometric measurements. The SOT-23-6 footprint enables miniaturized sensor modules for IoT and Industry 4.0 deployments.
Recommended
Motor Control Feedback Loops
The ADS7883SBDBVR's 3 MSPS throughput and zero-latency SAR conversion support DC-link current sensing in motor-control and BLDC/EV traction inverters where deterministic ADC latency preserves control-loop bandwidth. Designers commonly pair this ADC with a low-offset current-sense amplifier (such as INA240) and place the SOT-23-6 footprint directly next to the shunt resistor, minimizing ground-loop area. The SB temperature grade (-40 °C to +125 °C) handles under-hood automotive environments when paired with automotive-qualified companion ICs. The SPI interface allows synchronization to MCU PWM timers for sub-microsecond control-loop determinism.
Recommended
Battery-Powered IoT Sensor Hubs
The ADS7883SBDBVR's 2.7 mA typical current at 3 V supply and sleep-mode capability (controlled by CS deassertion) suit battery-powered IoT sensor nodes. The SOT-23-6 (DBV) package is compatible with low-cost 4-layer PCB stack-ups used in IoT hubs, and the SPI interface connects directly to sub-GHz or BLE wireless MCUs. The 2.7 V to 5.5 V supply allows direct connection to a single-cell Li-ion battery (3.0 V to 4.2 V) without requiring a boost converter, which reduces quiescent current drain. Designers often pair this ADC with an external LDO for cleaner analog rail to maximize SNR at low input levels.
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Recommended Products Summary
Engineering reference data for ADS7883SBDBVR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS7883SBDBVT | ADS7888SDBVT | ADS7887SDBVR | ADCS7476AIMF/NOPB |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 - same |
| Resolution | 12 bits | 12 bits | 12 bits | 10 bits | 12 bits |
| Sample Rate (max) | 3 MSPS | 3 MSPS | 1.25 kSPS | 1.25 kSPS | 1 MSPS |
| Input Channels | 1 | 1 | 1 | 1 | 1 |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Operating Temperature Range | -40 °C to +125 °C (SB grade) | -40 °C to +125 °C (SB grade) | -40 °C to +125 °C (S grade) | -40 °C to +85 °C | -40 °C to +85 °C |
| Architecture | SAR | SAR | SAR | SAR | SAR |
| Interface | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE |
Key Differentiators
- Higher throughput than other members of the ADS7xxx SOT-23-6 family (vs ADS7888SDBVT)
- Wider operating temperature range than lower-grade siblings (vs ADS7887SDBVR)
- Higher resolution than 10-bit SOT-23-6 family members at the same throughput (vs ADS7887MDBVT)
Design Notes
Place the analog input series capacitor (10 nF to 100 nF) and the AVDD bypass capacitor (1 µF X7R or X5R ceramic) as close to the SOT-23-6 package as possible to minimize parasitic inductance and ground-loop area. Use a continuous analog ground plane beneath the ADC and route the digital SCLK and SDO traces on a separate layer, avoiding crossovers with AIN traces. Estimated - based on typical SAR ADC layout guidelines from TI application notes for the ADS7xxx family.
Drive AVDD from a low-noise LDO (e.g., TPS7A4701) rather than directly from a switching regulator to maximize SNR; the SAR's reference voltage is AVDD-derived by default, so any ripple on AVDD directly couples into the conversion result. DVDD can be driven directly from the MCU's GPIO supply rail (1.65 V to 5.5 V) to save power and BoM cost. Decouple DVDD with a separate 100 nF capacitor placed close to pin 6 / pin 5 area. Estimated - based on TI ADS7883 datasheet recommendations.
Do not drive the analog input above AVDD or below GND - the input is single-ended with absolute maximum ratings that require the input stay within the supply range. Avoid operating with the input floating during power-up; add a 1 MΩ pulldown resistor on AIN if the upstream sensor can present an open-circuit condition. Always verify the SCLK-idle state matches the MCU SPI mode (the ADS7883 expects SCLK idle low for SPI mode 0) to avoid corrupted first conversions. Estimated - based on TI ADS7883 datasheet and TI's SAR-ADC FAQ.
Compliance Information
RoHS and REACH compliant per TI product page; lead-free and halogen-free per SOT-23-6 packaging materials. SB temperature grade (-40 to +125) provides industrial/automotive under-hood operating capability but is not AEC-Q100 qualified - choose the Q1 suffix variant for AEC-Q100 qualified applications.