My Inquiry
My Account
Texas Instruments ADS7866IDBVTG4
- Part No.:
- ADS7866IDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS7866IDBVTG4.pdf
- Description:
- IC ADC 12BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,897
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS7866IDBVTG4 from Texas Instruments is a 12-bit, 200-KSPS successive approximation register (SAR) analog-to-digital converter with SPI-compatible serial interface, single-supply operation (1.2 V to 3.6 V), ±1.5 LSB integral nonlinearity, and 71 dB SNR at 30 kHz input - used for precision signal acquisition in battery-powered medical instruments and portable data acquisition systems.
For engineers reviewing the ADS7866IDBVTG4 datasheet, ADS7866IDBVTG4 pinout, ADS7866IDBVTG4 application, or ADS7866IDBVTG4 equivalent, this page delivers verified electrical specifications, SOT-23-6 terminal mapping, real-world use scenarios, and validated alternative options for low-voltage, micro-power ADC selection.
Technical Context
The ADS7866IDBVTG4 implements a charge redistribution SAR architecture with integrated sample-and-hold, enabling unipolar 0 V to VDD input range without external reference. Conversion is initiated on the falling edge of CS, and data is clocked out MSB-first via SDO synchronized to SCLK.
It features auto power-down mode (8 nA typical), 13-cycle conversion timing (3.82 µs at 3.4 MHz SCLK), and supports throughput scaling from 100 KSPS (1.2 V supply) to 200 KSPS (≥1.6 V supply), with no pipeline delays and straight-binary output format.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes for high-fidelity analog signal digitization. |
| Throughput Rate | 200 KSPS at VDD ≥ 1.6 V - enables real-time sampling of signals up to ~80 kHz Nyquist bandwidth. |
| INL Error | ±1.5 LSB - ensures monotonicity and ≤0.037% full-scale linearity error for accurate sensor measurements. |
| SNR | 71 dB at fIN = 30 kHz, VDD ≥ 1.6 V - supports >11.5 effective number of bits (ENOB) in mid-band applications. |
| Supply Range | 1.2 V to 3.6 V - allows direct interfacing with ultra-low-voltage MCUs and energy-harvesting power rails. |
| Power Dissipation | 1.39 mW typical at 200 KSPS, 3.6 V - enables continuous operation in coin-cell–powered devices for >1 year. |
| Auto Power-Down | 8 nA typical - reduces quiescent current by >5 orders of magnitude between conversions to extend battery life. |
Pinout & Package
ADS7866IDBVTG4 is housed in a 6-pin SOT-23 package (DBV), with exposed pad not electrically connected. The compact 2.9 mm × 1.6 mm footprint supports high-density PCB layouts in space-constrained portable systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF/VDD (Pin 1) | Power supply and internal reference input | Provides both VDD bias and reference voltage; sets unipolar input range from 0 V to VDD - eliminates need for external reference. |
| GND (Pin 2) | Analog and digital ground reference | Common return path for all analog and digital currents; must be low-impedance to maintain SNR and avoid code-dependent errors. |
| VIN (Pin 3) | Analog input signal terminal | Accepts single-ended unipolar signals from 0 V to VDD; input capacitance is 12 pF - requires careful driver impedance matching for acquisition time compliance. |
| SCLK (Pin 4) | Serial clock input | Controls conversion timing and data shift-out rate; max frequency 3.4 MHz (VDD ≥ 1.6 V); defines minimum sampling interval and total cycle time. |
| SDO (Pin 5) | Serial data output | 3-state CMOS output delivering 12-bit MSB-first data; transitions on falling SCLK edge after sampling; tri-states after final bit to prevent bus contention. |
| CS (Pin 6) | Chip select / conversion start | Active-low signal initiating conversion on falling edge; also frames output data and gates SCLK - enables multi-device SPI daisy-chaining. |
Key Features
| Feature | Design Value |
|---|---|
| SPI-compatible serial interface | Direct connection to standard MCU SPI peripherals without protocol translation or glue logic. |
| No missing codes over full temperature range | Guarantees monotonic transfer function across –40°C to +85°C - critical for closed-loop control and safety-critical sensing. |
| Internal reference derived from VDD | Removes external reference IC and associated BOM cost, layout area, and drift sources - simplifies calibration. |
| 13-cycle conversion timing | Fixed 3.82 µs conversion time at 3.4 MHz SCLK - enables deterministic timing for time-triggered embedded systems. |
| 0 V to VDD unipolar input range | Supports direct interfacing with rail-to-rail op-amp outputs and single-supply sensor front-ends without level-shifting. |
| Low input leakage (±1 µA) | Minimizes gain error in high-impedance sensor interfaces (e.g., thermistors, pH electrodes) without external buffering. |
Applications
| Battery-Powered Medical Sensors | Isolated Data Acquisition |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) analog front-end digitizing amperometric sensor current. IC Role / Device Role / Timing Role: 12-bit SAR ADC performing single-shot conversions triggered by microcontroller every 500 ms. Use Value: 1.2-V operation extends CR2032 battery life beyond 18 months; ±1.5 LSB INL ensures <0.1% glucose concentration error. |
Use Scenario: Industrial isolation barrier capturing 4–20 mA loop signals via optocoupled SPI interface. IC Role / Device Role / Timing Role: Isolated-side ADC converting sensor voltage with galvanically separated SCLK/CS/SDO lines. Use Value: Auto power-down (8 nA) minimizes isolated-side standby power; 71 dB SNR maintains 12-bit integrity post-isolation. |
| Portable Communication Test Equipment | Automatic Test Equipment (ATE) Channel Card |
Use Scenario: Handheld RF power meter digitizing detector diode output during field calibration. IC Role / Device Role / Timing Role: High-speed sampling ADC acquiring burst-mode RF envelope signals at 200 KSPS. Use Value: 200-KSPS throughput captures transient RF peaks; 1.39 mW dissipation prevents thermal drift in handheld enclosure. |
Use Scenario: Modular ATE system digitizing DUT analog outputs across 32 parallel channels. IC Role / Device Role / Timing Role: Compact ADC per channel enabling dense channel packing in 3U PXI card. Use Value: SOT-23-6 footprint (2.9 × 1.6 mm) reduces board area by >40% vs. SOIC-8 alternatives; SPI interface eases FPGA control integration. |
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 |
|---|---|---|---|
| ADS7866IDBVR | Same silicon die, tape-and-reel packaging (3000 pcs), identical electrical specs and timing. | No functional difference; selected for high-volume automated assembly instead of small-batch prototyping. | Choose ADS7866IDBVR for production runs requiring full reel delivery and lower unit cost. |
| ADS7886IDBVT | 12-bit, 1-MSPS SAR ADC with wider 2.35–5.25 V supply range; higher power (3.5 mW at 1 MSPS). | Requires ≥2.35 V supply; unsuitable for sub-1.6 V battery operation but offers 5× higher throughput. | Select ADS7886IDBVT only when >200 KSPS is required and supply voltage exceeds 2.35 V. |
Compared with ADS7866IDBVTG4, ADS7866IDBVR provides identical performance in volume packaging, while ADS7886IDBVT trades ultra-low-voltage operation for higher speed - making ADS7866IDBVTG4 optimal for sub-1.6 V, micro-power, 200-KSPS applications.
Availability
ADS7866IDBVTG4 is available at Aetrix Electronics and suitable for battery-powered medical sensors, isolated data acquisition, and portable communication test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS7866IDBVTG4 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 design.
The ADS7866IDBVTG4 belongs to TI's micro-power SAR ADC family, engineered specifically for ultra-low-voltage, high-accuracy signal acquisition in portable and energy-constrained systems.
FAQ
What is the maximum sampling rate of the ADS7866IDBVTG4 at 1.2 V supply?
The ADS7866IDBVTG4 achieves a maximum throughput of 100 KSPS when operated at 1.2 V supply voltage, with corresponding SCLK frequency of 1.7 MHz. This is specified in the SLAS465 datasheet under "SPECIFICATIONS, ADS7866" with test conditions of fSAMPLE = 100 KSPS and fSCLK = 1.7 MHz for 1.2 V ≤ VDD < 1.6 V.
Does the ADS7866IDBVTG4 require an external reference voltage?
No, the ADS7866IDBVTG4 does not require an external reference. Its reference is internally derived from the VDD supply applied to the REF/VDD pin (Pin 1), establishing a unipolar input range of 0 V to VDD - confirmed in the "DESCRIPTION" and "ANALOG INPUT" sections of the SLAS465 datasheet.
What is the pin count and package type of the ADS7866IDBVTG4?
The ADS7866IDBVTG4 uses a 6-pin SOT-23 package (DBV designation), as documented in the "PIN CONFIGURATION" diagram and "ORDERING INFORMATION" table of the SLAS465 datasheet. Pinout includes REF/VDD, GND, VIN, SCLK, SDO, and CS - no additional pins or variants exist for this part number.
How does the auto power-down feature work in the ADS7866IDBVTG4?
The ADS7866IDBVTG4 automatically enters power-down mode after each conversion completes, reducing supply current to 8 nA typical. It remains in this state until the next falling edge of CS initiates a new conversion - a behavior explicitly stated in the "FEATURES" section and verified in the "POWER DISSIPATION" table of SLAS465.
Is the ADS7866IDBVTG4 compatible with standard SPI interfaces?
Yes, the ADS7866IDBVTG4 is SPI-compatible: it uses CS as frame sync, SCLK for clocking, and SDO for MOSI-only data output (no SDI). It supports MSB-first, 12-bit straight-binary format with no dummy cycles - confirmed in the "FEATURES" list and timing diagram (Figure 1) of SLAS465.
ADS7866IDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- 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:
- External
- Voltage - Supply, Analog:
- 1.2V ~ 3.6V
- Voltage - Supply, Digital:
- 1.2V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7866IDBVTG4 FAQ
1.How can I place an order for ADS7866IDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7866IDBVTG4 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 ADS7866IDBVTG4 reliable?
The price and inventory of ADS7866IDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7866IDBVTG4 is usually 5 days.
3.What payment methods are accepted for ADS7866IDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7866IDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7866IDBVTG4?
ADS7866IDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7866IDBVTG4 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 ADS7866IDBVTG4?
For technical support, including ADS7866IDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7866IDBVTG4 requirements.
6.How does Aetrix verify that ADS7866IDBVTG4 is sourced from the original manufacturer or authorized distributors?
All ADS7866IDBVTG4 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 ADS7866IDBVTG4 meets industry standards.
7.What is the process for return or replacement of ADS7866IDBVTG4?
All ADS7866IDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS7866IDBVTG4, 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 ADS7866IDBVTG4 part is unused and in its original packaging.
Return procedure for ADS7866IDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS7866IDBVTG4 Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
