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Texas Instruments ADS7886SBDBVR
- Part No.:
- ADS7886SBDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS7886SBDBVR.pdf
- Description:
- IC ADC 12BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,763
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Product details
Overview
ADS7886SBDBVR 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, and 20-MHz serial interface. It operates from 2.35 V to 5.25 V, delivers ±1.25 LSB INL (max), and consumes only 3.9 mW at 3-V supply and 1-MSPS throughput - ideal for battery-powered data acquisition in motor control and optical sensing.
For engineers reviewing the ADS7886SBDBVR datasheet, ADS7886SBDBVR pinout, ADS7886SBDBVR application, or ADS7886SBDBVR equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, zero-latency conversion timing, power-down current of 1 µA, wide 15-MHz input bandwidth, and digital input tolerance up to 5.25 V independent of VDD level.
Technical Context
The ADS7886SBDBVR implements a capacitor-based SAR architecture with integrated sampling circuitry, eliminating external hold capacitors. Conversion is initiated on the falling edge of CS, and serial output (MSB-first, 16-clock cycle) is synchronized to SCLK with precise timing windows defined for setup, hold, and quiet time.
It supports two functional modes: normal operation (full 12-bit conversion with 4 leading zeros) and power-down mode (entered via CS high between 2nd and 10th SCLK falling edges), enabling dynamic power management in low-duty-cycle systems without compromising acquisition integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonicity and full-scale linearity in closed-loop feedback. |
| Sample Rate | 1 MSPS maximum throughput - supports real-time monitoring of fast transients in motor current or bus voltage. |
| INL | ±1.25 LSB (max), ±0.65 LSB (typ) - enables accurate DC measurement and calibration in medical instrumentation. |
| Power Dissipation | 3.9 mW at 3 V / 1 MSPS - extends battery life in portable sensors and handheld test equipment. |
| Input Bandwidth | 15 MHz (–3 dB) - accommodates wideband signals from optical detectors and RF baseband stages. |
| Digital Input Tolerance | VINH up to 5.25 V regardless of VDD (as low as 2.35 V) - simplifies level-shifting in mixed-supply systems. |
| Power-Down Current | 1 µA (SCLK off) - reduces standby consumption in always-on sensor nodes. |
Pinout & Package
ADS7886SBDBVR is housed in a 6-pin SOT-23 (DBV) package with 2.90 mm × 1.60 mm body size, optimized for space-constrained PCB layouts in industrial and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply and internal reference source | Supplies analog/digital core and sets full-scale input range (0 V to VDD); must be decoupled with 1-µF + 10-nF capacitors. |
| GND | Analog and digital ground reference | Single ground plane required; all analog and digital signals referenced to this pin - critical for noise immunity. |
| VIN | Analog input signal terminal | Unipolar single-ended input; requires low-impedance drive (<200 Ω) for specified AC performance. |
| SCLK | Serial clock input | 20-MHz max frequency; controls conversion timing and serial data output edge alignment. |
| SDO | Serial data output | 3-state, MSB-first output; transitions to high-impedance after 16th SCLK falling edge. |
| CS | Chip select (active-low) | Falling edge initiates sampling; rising edge during conversion aborts it and forces SDO into 3-state. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Sampling triggered directly by CS falling edge - eliminates pipeline delay for deterministic real-time control loops. |
| Wide supply range | 2.35 V to 5.25 V operation - supports direct connection to Li-ion, 3.3-V, and 5-V rails without regulators. |
| High-voltage tolerant digital inputs | VIH up to 5.25 V independent of VDD - removes need for external level shifters when interfacing with 5-V microcontrollers. |
| Low-power power-down mode | 1 µA quiescent current with SCLK disabled - enables microsecond wake-up for event-triggered sampling. |
| Integrated sample-and-hold | No external components required - reduces BOM count and layout area in compact DAQ modules. |
Applications
| Motor Control Feedback | Optical Sensor Interface |
|---|---|
Use Scenario: Real-time sampling of motor phase currents and DC bus voltage in digital inverters. IC Role / Device Role / Timing Role: ADC front-end capturing analog feedback signals for PWM update cycles at ≤1 µs latency. Use Value: 12-bit resolution and 15-MHz input bandwidth preserve harmonic content for precise field-oriented control. | Use Scenario: Digitizing photodiode or MEMS mirror output in DWDM optical switching systems. IC Role / Device Role / Timing Role: High-speed, low-noise digitization of low-amplitude optical detector signals with minimal added jitter. Use Value: 72.25-dB SINAD at 100 kHz ensures accurate amplitude tracking across wavelength channels. |
| Battery-Powered Instrumentation | Medical Signal Acquisition |
Use Scenario: Portable multimeters and handheld oscilloscopes requiring extended runtime and precision. IC Role / Device Role / Timing Role: Core ADC in ultra-low-power measurement chains with adaptive sampling rate control. Use Value: 3.9-mW active power and 1-µA power-down current enable >100-hour battery life at intermittent use. | Use Scenario: ECG/EEG front-end signal conditioning where DC accuracy and low THD are critical. IC Role / Device Role / Timing Role: Precision digitizer for biopotential amplifiers operating from single 3.3-V supply. Use Value: ±0.65 LSB typical INL and –84-dB THD meet Class I medical device linearity and distortion requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7887IDBVR | 10-bit resolution, same 1-MSPS rate and SOT-23-6 package; lower power (2.1 mW @ 3 V) | Lower DC accuracy (±0.5 LSB INL typ) and reduced SNR (68 dB) - suitable for cost-sensitive industrial monitoring where 10-bit suffices | Select when system resolution requirement is ≤10 bits and power budget is tighter than 3.9 mW. |
| ADS8860IDRCT | 16-bit, 1-MSPS, SPI-compatible, but in 3-mm × 3-mm VSSOP-10; higher power (11 mW @ 3 V) | Higher resolution and better noise floor (86-dB SNR), but larger footprint and no 5.25-V-tolerant digital inputs | Choose when absolute precision outweighs board space and mixed-voltage interface needs. |
Compared with ADS7887IDBVR, ADS7886SBDBVR provides 2 additional bits and superior linearity for demanding closed-loop control; versus ADS8860IDRCT, it trades resolution for smaller size, lower power, and voltage-flexible digital I/O - making it optimal for compact, battery-operated, mixed-rail systems.
Availability
ADS7886SBDBVR is available at Aetrix Electronics and suitable for motor current sensing, optical networking interfaces, battery-powered instrumentation, and medical signal acquisition requiring stable component supply across extended temperature ranges (–40°C to 125°C).
Supply support for ADS7886SBDBVR 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and low-power signal chain solutions.
The ADS7886SBDBVR belongs to TI's micro-power miniature SAR ADC family, designed specifically for space- and energy-constrained applications including portable test equipment, industrial sensors, and optical communication subsystems.
FAQ
What is the guaranteed integral nonlinearity (INL) specification for ADS7886SBDBVR?
The ADS7886SBDBVR has a maximum INL of ±1.25 LSB over temperature (–40°C to 125°C), with ±0.65 LSB typical performance. This specification is validated per the SLAS492B datasheet and ensures monotonic behavior and accurate DC transfer function across its full 12-bit range - critical for calibration-sensitive applications like medical instrumentation and precision motor control where offset and gain errors must remain bounded.
Does ADS7886SBDBVR require an external reference voltage?
No, ADS7886SBDBVR uses its VDD supply as the internal reference, establishing a unipolar input range from 0 V to VDD. This eliminates the need for external references or buffers in most applications. However, if higher accuracy or temperature stability is required, the VDD rail can be derived from a low-drift reference such as REF3030 - as confirmed in TI's application notes and the SLAS492B datasheet Section 8.3.1.
How does the power-down mode work on ADS7886SBDBVR?
ADS7886SBDBVR enters power-down mode when CS is pulled high between the 2nd and 10th falling edges of SCLK. In this state, supply current drops to 1 µA (SCLK off) or 200 µA (SCLK running). Recovery requires a dummy conversion cycle (CS low ≥10 SCLK edges), followed by a 1-µs wake-up period before valid data is available - fully documented in Section 8.4.2 of the SLAS492B datasheet.
What is the maximum input signal bandwidth supported by ADS7886SBDBVR?
The ADS7886SBDBVR has a full-power bandwidth of 15 MHz (–3 dB point), verified under standard test conditions (VDD = 3 V, fIN = 100 kHz). This allows faithful digitization of fast-rising signals from optical sensors and RF baseband stages without significant amplitude roll-off - a key parameter confirmed in Section 7.5 (SAMPLING DYNAMICS) of the SLAS492B datasheet.
Can ADS7886SBDBVR interface directly with a 5-V microcontroller while operating from a 2.35-V supply?
Yes, ADS7886SBDBVR supports digital input voltages up to 5.25 V regardless of VDD level - meaning CS and SCLK can be driven directly from a 5-V MCU even when VDD = 2.35 V. This feature, explicitly stated in Section 7.5 (DIGITAL INPUT/OUTPUT), relaxes power sequencing constraints and eliminates level-shifters in mixed-voltage designs.
ADS7886SBDBVR 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:
- -
ADS7886SBDBVR FAQ
1.How can I place an order for ADS7886SBDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7886SBDBVR 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 ADS7886SBDBVR reliable?
The price and inventory of ADS7886SBDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7886SBDBVR is usually 5 days.
3.What payment methods are accepted for ADS7886SBDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7886SBDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7886SBDBVR?
ADS7886SBDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7886SBDBVR 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 ADS7886SBDBVR?
For technical support, including ADS7886SBDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7886SBDBVR requirements.
6.How does Aetrix verify that ADS7886SBDBVR is sourced from the original manufacturer or authorized distributors?
All ADS7886SBDBVR 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 ADS7886SBDBVR meets industry standards.
7.What is the process for return or replacement of ADS7886SBDBVR?
All ADS7886SBDBVR units undergo pre-shipment inspection (PSI). If there is an issue with ADS7886SBDBVR, 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 ADS7886SBDBVR part is unused and in its original packaging.
Return procedure for ADS7886SBDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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