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Texas Instruments ADS7886SBDBVT
- Part No.:
- ADS7886SBDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS7886SBDBVT.pdf
- Description:
- IC ADC 12BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,953
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Product details
Overview
ADS7886SBDBVT from Texas Instruments is a 12-bit, 1-MSPS successive-approximation register (SAR) analog-to-digital converter with inherent sample-and-hold, unipolar 0 V to VDD input range, zero-latency operation, and 20-MHz serial interface. It operates from 2.35 V to 5.25 V, draws only 1.5 mA at 3 V/1 MSPS, and supports battery-powered data acquisition in motor control and optical sensing systems.
For engineers reviewing the ADS7886SBDBVT datasheet, ADS7886SBDBVT pinout, ADS7886SBDBVT application, or ADS7886SBDBVT equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, ±1.25 LSB max INL, 72.25-dB SINAD at 100 kHz, 15-MHz full-power bandwidth, and compatibility with mixed-voltage digital interfaces up to 5.25 V while powered from as low as 2.35 V.
Technical Context
The ADS7886SBDBVT implements a capacitor-based SAR architecture with integrated sampling circuitry, enabling true zero-latency conversion initiated on the falling edge of CS. Its serial interface uses MSB-first 16-clock cycles (4 leading zeros + 12 data bits), with SDO entering 3-state after the 16th SCLK falling edge.
Power management includes a dedicated power-down mode entered by toggling CS between the 2nd and 10th SCLK falling edges, reducing supply current to 1 µA. Digital inputs tolerate voltages up to 5.25 V independent of VDD, relaxing level-shifting requirements and power-up sequencing constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonicity and deterministic code transitions across full temperature range. |
| Sample Rate | 1 MSPS maximum throughput - supports real-time closed-loop control and high-speed sensor monitoring. |
| INL | ±1.25 LSB maximum - limits end-point error to <0.03% of full scale, critical for precision measurement accuracy. |
| SINAD | 72.25 dB typical at 100 kHz - enables >11.5 effective number of bits (ENOB) for clean signal digitization. |
| Supply Range | 2.35 V to 5.25 V - allows direct interfacing with 3.3 V or 5 V systems without external regulators. |
| Power Down Current | 1 µA - reduces system standby power in portable instrumentation and wake-on-event architectures. |
| Input Bandwidth | 15 MHz at –3 dB - supports accurate digitization of fast transients and wideband sensor outputs. |
Pinout & Package
The ADS7886SBDBVT is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply and internal reference | Supplies core logic and ADC reference; output full-scale voltage equals VDD, eliminating need for external reference. |
| GND | Analog/digital ground reference | Single ground pin serves both analog and digital sections - requires low-impedance layout to minimize noise coupling. |
| VIN | Analog input | Unipolar single-ended input accepting 0 V to VDD; 21 pF input capacitance demands low-source-impedance driving. |
| SCLK | Serial clock input | Accepts up to 20-MHz CMOS-level clock; timing defines conversion duration and data output rate. |
| SDO | Serial data output | 3-state open-drain compatible output; drives MSB-first 12-bit word preceded by four zeros during 16-clock cycle. |
| CS | Chip select input | Active-low control initiating sampling on falling edge; also controls entry into power-down mode via timing window relative to SCLK. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Sampling triggered precisely on CS falling edge - eliminates pipeline delay for time-critical feedback loops. |
| Mixed-voltage digital interface | Digital inputs accept up to 5.25 V regardless of VDD - enables direct connection to 5-V microcontrollers without level shifters. |
| Wide supply range | Operates from 2.35 V to 5.25 V - supports dual-rail systems and extends battery life in 3-V designs. |
| Low power at full speed | 3.9 mW typical at 3 V/1 MSPS - reduces thermal load and simplifies thermal design in dense layouts. |
| High-speed acquisition | 325 ns acquisition time - permits accurate sampling of signals with fast slew rates without external buffering. |
Applications
| Motor Current Sensing | Optical Sensor Interface |
|---|---|
Use Scenario: Real-time monitoring of phase currents in BLDC motor drives using shunt resistors. IC Role / Device Role / Timing Role: ADC digitizes amplified shunt voltage with 1-MSPS throughput and 12-bit resolution to feed current-loop controller. Use Value: ±1.25 LSB INL ensures consistent torque regulation; 15-MHz input bandwidth captures PWM ripple components for accurate RMS calculation. | Use Scenario: Digitizing photodiode or phototransistor outputs in DWDM optical transceivers. IC Role / Device Role / Timing Role: SAR ADC converts analog photocurrent signals into digital values for optical power monitoring and channel equalization. Use Value: 72.25-dB SINAD preserves dynamic range for low-light detection; zero-latency operation enables rapid gain adjustment in closed-loop AGC circuits. |
| Battery-Powered DAQ | Medical Instrumentation |
Use Scenario: Portable multichannel data loggers capturing sensor data over extended periods on coin-cell batteries. IC Role / Device Role / Timing Role: Low-power ADC acquires temperature, pressure, and humidity readings at sub-MSPS rates with automatic power-down between samples. Use Value: 1 µA power-down current extends battery life to months; 2.35-V minimum supply enables operation down to near-dead battery voltage. | Use Scenario: Analog front-end in handheld ECG or pulse oximetry devices requiring high-fidelity biopotential acquisition. IC Role / Device Role / Timing Role: Precision ADC digitizes conditioned bio-signals with minimal added noise and distortion for clinical-grade analysis. Use Value: –84-dB THD prevents harmonic contamination of low-amplitude physiological waveforms; 12-bit resolution supports >4096:1 dynamic range for R-wave detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7887IDBVT | 10-bit resolution, same 1-MSPS rate, identical 6-pin SOT-23 package and pinout | Lower resolution suitable for cost-sensitive industrial sensors where 10-bit ENOB suffices | Select when system SNR requirements are ≤60 dB and board space must be preserved. |
| ADS8860IDRCT | 16-bit resolution, 1-MSPS, SPI-compatible, 10-pin VSON package | Higher precision for test equipment and medical imaging; larger footprint and higher power (1.8 mA) | Choose when >12-bit linearity and lower DNL (<±0.5 LSB) are mandatory for calibration-critical systems. |
Compared with ADS7886SBDBVT, ADS7887IDBVT trades resolution for lower cost and identical layout compatibility, while ADS8860IDRCT delivers enhanced DC accuracy and AC performance at the expense of package size and power consumption - making ADS7886SBDBVT optimal for space- and power-constrained 12-bit applications.
Availability
ADS7886SBDBVT is available at Aetrix Electronics and suitable for motor control, optical networking, battery-powered instrumentation, and medical sensing applications requiring stable component supply across automotive-grade temperature ranges (–40°C to 125°C).
Supply support for ADS7886SBDBVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision data converters and low-power signal chain solutions.
The ADS7886SBDBVT belongs to TI's micro-power miniature SAR ADC family, designed specifically for space-constrained, battery-operated systems demanding high-speed, high-accuracy digitization without external references or complex support circuitry.
FAQ
What is the maximum sample rate supported by the ADS7886SBDBVT?
The ADS7886SBDBVT supports a maximum sample rate of 1 MSPS, achieved using a 20-MHz SCLK. At this rate, conversion time is 760–800 ns, and the device delivers guaranteed 12-bit performance with ±1.25 LSB INL across –40°C to 125°C. The throughput remains stable across its full 2.35 V to 5.25 V supply range, making ADS7886SBDBVT suitable for high-speed embedded control loops.
Does the ADS7886SBDBVT require an external reference voltage?
No, the ADS7886SBDBVT does not require an external reference. Its internal reference is derived directly from the VDD supply, resulting in a unipolar input range of 0 V to VDD. This eliminates external reference components and associated layout complexity. The ADS7886SBDBVT maintains ±1.25 LSB INL and 72.25-dB SINAD without external references, simplifying design while preserving accuracy.
How does the power-down mode function in the ADS7886SBDBVT?
The ADS7886SBDBVT enters power-down mode when CS is pulled high between the 2nd and 10th falling edges of SCLK, reducing supply current to 1 µA. A dummy conversion cycle (CS low for >10 SCLK edges) exits power-down, with full functionality restored within 1 µs. This feature enables dynamic power scaling in intermittent-sampling applications, extending battery life without sacrificing wake-up latency - a key advantage of ADS7886SBDBVT in portable systems.
Can the ADS7886SBDBVT interface with a 5-V microcontroller while operating from a 3-V supply?
Yes, the ADS7886SBDBVT supports mixed-voltage operation: digital inputs (CS, SCLK) accept voltages up to 5.25 V even when VDD is as low as 2.35 V. This eliminates level-shifting circuitry when interfacing with 5-V controllers. However, digital output levels (SDO) follow VDD - so at 3 V, VOH is VDD – 0.2 V. This robust interface flexibility is a defining characteristic of ADS7886SBDBVT in heterogeneous voltage domain systems.
What package type and dimensions does the ADS7886SBDBVT use?
The ADS7886SBDBVT is packaged in a 6-pin SOT-23 (DBV) case measuring 2.90 mm × 1.60 mm with standard 0.95-mm lead pitch. This ultra-compact footprint supports high-density PCB layouts in space-limited applications such as wearable sensors and optical modules. The package is rated for operation from –40°C to 125°C and features JEDEC-standard thermal metrics (RθJA = 113.4°C/W), confirming suitability for thermally demanding environments - a critical specification for ADS7886SBDBVT deployment.
ADS7886SBDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.35V ~ 5.25V
- Voltage - Supply, Digital:
- 2.35V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7886SBDBVT FAQ
1.How can I place an order for ADS7886SBDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7886SBDBVT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS7886SBDBVT reliable?
The price and inventory of ADS7886SBDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7886SBDBVT is usually 5 days.
3.What payment methods are accepted for ADS7886SBDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7886SBDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7886SBDBVT?
ADS7886SBDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7886SBDBVT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS7886SBDBVT?
For technical support, including ADS7886SBDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7886SBDBVT requirements.
6.How does Aetrix verify that ADS7886SBDBVT is sourced from the original manufacturer or authorized distributors?
All ADS7886SBDBVT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS7886SBDBVT meets industry standards.
7.What is the process for return or replacement of ADS7886SBDBVT?
All ADS7886SBDBVT units undergo pre-shipment inspection (PSI). If there is an issue with ADS7886SBDBVT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS7886SBDBVT part is unused and in its original packaging.
Return procedure for ADS7886SBDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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