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Texas Instruments ADS8317IBDGKT
- Part No.:
- ADS8317IBDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADS8317IBDGKT.pdf
- Description:
- IC ADC 16BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:573
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Product details
Overview
ADS8317IBDGKT from Texas Instruments is a 16-bit, SAR analog-to-digital converter with differential input, SPI/SSI-compatible serial interface, and microPower operation (2mW at 2.7V/100kHz). It delivers ±1.5LSB max INL, 5μVRMS noise, and 200kSPS throughput in an MSOP-8 package-designed for precision battery-operated data acquisition.
For engineers reviewing the ADS8317IBDGKT datasheet, ADS8317IBDGKT pinout, ADS8317IBDGKT application, or ADS8317IBDGKT equivalent, key selection considerations include its bipolar differential input range (±VREF), low-power shutdown mode (0.3μW), 2.7V–5.5V supply flexibility, and compatibility with isolated signal chains requiring high DC accuracy and low noise.
Technical Context
The ADS8317IBDGKT implements a capacitive redistribution SAR architecture with integrated sample-and-hold, enabling single-cycle acquisition without pipeline delay. Its conversion timing is fully synchronous to DCLOCK, requiring exactly 22 clock cycles per 16-bit result (LSB-first).
It supports true bipolar operation via differential inputs (+IN/–IN) referenced to an externally supplied VREF (0.1V to VDD/2), with internal trimming maintaining ±1.5LSB INL across temperature. The CS/SHDN pin provides dual-function control: chip select (active-low) and hardware shutdown (high).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees 65,536 distinct output codes with no missing codes over full supply range |
| INL (max) | ±1.5 LSB - ensures end-point linearity error ≤ ±0.023% of full-scale range at 2.7V–5.5V |
| Throughput rate | 200 kSPS at 2.7V - enables real-time sampling of signals up to 100 kHz Nyquist bandwidth |
| Supply current | 1.4 mA typical at 2.7V/200kSPS - allows continuous high-speed operation in sub-3V battery systems |
| Power-down current | 0.3 μW at 2.7V - reduces idle power to negligible levels during sensor sleep intervals |
| Noise (RMS) | 50 μVRMS - supports 14.6-bit ENOB at 2kHz input, critical for vibration analysis resolution |
| Reference range | 0.1 V to VDD/2 - permits flexible scaling (e.g., 1.25V ref at 2.7V supply for ±1.25V input range) |
Pinout & Package
ADS8317IBDGKT is housed in an 8-pin MSOP package (DGK) with exposed thermal pad. Pin 1 is REF; pin 4 is GND; pin 5 is CS/SHDN (dual-function); pin 8 is VDD. The thermal pad must be soldered to PCB ground for optimal thermal performance and EMI immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Analog reference input | Sets full-scale differential input range (±VREF); accepts 0.1V–VDD/2; draws 9–14 μA at 200kSPS |
| +IN (Pin 2) | Differential analog input (noninverting) | Accepts voltage relative to –IN; common-mode range extends to VDD + 0.2V |
| –IN (Pin 3) | Differential analog input (inverting) | Completes differential pair; enables rejection of common-mode noise in isolated front-ends |
| GND (Pin 4) | Power and analog ground | Single ground reference for analog, digital, and thermal pad; requires low-impedance PCB connection |
| CS/SHDN (Pin 5) | Digital control input | Low = active conversion/data transfer; high = 0.3μW shutdown mode with fast wake-up |
| DOUT (Pin 6) | Serial data output | LSB-first, SPI/SSI-compatible; tri-state when CS high; 5pF load capacitance limit |
| DCLOCK (Pin 7) | Serial interface clock input | Edge-triggered; 24kHz–4.8MHz range; determines conversion speed and power consumption |
| VDD (Pin 8) | Positive supply | 2.7V–5.5V operation; powers analog core, digital interface, and internal bias circuits |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed INL | ±1.5 LSB max across –40°C to +85°C - eliminates system-level calibration for industrial sensor nodes |
| Differential input architecture | True bipolar operation with ±VREF range - enables direct connection to instrumentation amplifiers and isolation amplifiers |
| MicroPower shutdown | 0.3 μW power-down state - extends battery life in wireless condition-monitoring sensors by >100× vs active mode |
| SPI/SSI-compatible interface | LSB-first, no external framing required - simplifies FPGA and MCU firmware integration without protocol translation logic |
| Flexible reference voltage | 0.1V to VDD/2 programmable range - allows optimization of dynamic range for low-voltage sensor outputs (e.g., 100mV thermocouple signals) |
Applications
| Battery-Operated Data Loggers | Isolated Industrial Sensors |
|---|---|
Use Scenario: Portable environmental monitoring unit logging temperature, pressure, and humidity using low-power analog sensors. IC Role / Device Role / Timing Role: ADC digitizes conditioned sensor outputs at 10–100Hz; enters 0.3μW shutdown between samples. Use Value: Enables >5-year battery life on CR2032 using 2.7V supply and 10kHz sampling duty cycling. | Use Scenario: High-voltage motor drive current sensing with galvanic isolation between power stage and controller. IC Role / Device Role / Timing Role: Digitizes isolated amplifier output; differential inputs reject common-mode transients from IGBT switching. Use Value: ±1.5LSB INL and 50μVRMS noise preserve <0.1% current measurement accuracy despite 1kV common-mode step transients. |
| Remote Vibration Analysis Nodes | Multi-Channel Simultaneous Sampling |
Use Scenario: Wireless node attached to rotating machinery capturing accelerometer waveforms for bearing fault detection. IC Role / Device Role / Timing Role: Samples piezoelectric sensor at 200kSPS with 14.6-bit ENOB; processes FFT in low-power MCU. Use Value: 89.6dB SNR at 10kHz enables detection of sub-100μg vibration harmonics buried in broadband noise. | Use Scenario: Synchronized acquisition of phase currents in three-phase inverter control using multiple ADS8317IBDGKT devices. IC Role / Device Role / Timing Role: Each device shares common DCLOCK and CS; precise 22-cycle deterministic latency enables cycle-aligned sampling. Use Value: Eliminates inter-channel skew <10ns, critical for vector control algorithms requiring <0.1° electrical angle resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8321IDGKT | Pin-compatible MSOP-8; 18-bit resolution; higher power (15mW at 5V/500kSPS); ±2LSB INL | Requires higher supply current and board area for same sampling rate; better suited for lab-grade instrumentation than portable systems | Select when 18-bit resolution and 500kSPS throughput outweigh battery-life constraints |
| AD7682BRMZ | 16-bit, 250kSPS, SPI interface; 3.3V-only supply; ±1.5LSB INL; 10μVRMS noise; LFCSP-10 package | Lacks 2.7V operation and flexible reference range; smaller footprint but no thermal pad; higher noise floor limits low-amplitude signal fidelity | Select for space-constrained 3.3V systems where thermal pad is not required and 10μVRMS noise is acceptable |
Compared with ADS8321IDGKT and AD7682BRMZ, the ADS8317IBDGKT uniquely balances ultra-low power (2mW), wide supply range (2.7–5.5V), and factory-trimmed ±1.5LSB INL in MSOP-8-making it optimal for battery-powered field instruments needing precision without design complexity.
Availability
ADS8317IBDGKT is available at Aetrix Electronics and suitable for battery-operated data loggers, isolated industrial sensors, and remote vibration analysis nodes requiring stable component supply and long-term manufacturability.
Supply support for ADS8317IBDGKT 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The ADS8317IBDGKT belongs to TI's precision data acquisition portfolio, designed specifically for portable and isolated measurement systems demanding high DC accuracy, low power, and robust serial interfacing in compact packages.
FAQ
What is the maximum sampling rate of the ADS8317IBDGKT at 2.7V supply?
The ADS8317IBDGKT achieves a maximum throughput rate of 200 kSPS when operated at 2.7V supply voltage and 4.8MHz DCLOCK frequency. This is confirmed in the Electrical Characteristics table for VDD = +2.7V, where "Throughput rate" is specified as 200 kSPS under fSAMPLE = 200kHz conditions. At this rate, typical supply current is 1.4–2.0mA.
Does the ADS8317IBDGKT require an external clock source?
Yes, the ADS8317IBDGKT requires an external DCLOCK signal applied to Pin 7. The clock frequency must be between 24kHz and 4.8MHz for 2.7V operation (or up to 6.0MHz at 5V), with minimum high/low times ≥200ns. The device has no internal oscillator and relies entirely on this external clock to control conversion timing and serial data transfer.
What is the meaning of "IB" in the ADS8317IBDGKT part number?
The "IB" suffix in ADS8317IBDGKT denotes the improved grade version with tighter DC accuracy specifications: ±1.5LSB maximum integral linearity error (INL) and ±0.7LSB typical DNL, compared to ±2LSB INL for the standard "I" grade. This grade is validated across –40°C to +85°C and reflects factory trimming performed at package level.
Can the ADS8317IBDGKT operate with a 1.25V reference voltage?
Yes, the ADS8317IBDGKT supports reference voltages as low as 0.1V and up to VDD/2. At 2.7V supply, VDD/2 = 1.35V, so 1.25V is within specification. The datasheet explicitly lists VREF = +1.25V for all 2.7V electrical characteristics, including AC performance (SNR, THD) and reference input current (9–14 μA at 200kSPS).
How does the CS/SHDN pin function in the ADS8317IBDGKT?
The CS/SHDN pin (Pin 5) serves two distinct functions: when driven low, it enables conversion and serial data transfer; when driven high, it places the ADS8317IBDGKT into hardware shutdown mode, reducing supply current to 0.3 μW at 2.7V. The transition from shutdown to active mode requires no initialization delay-the first conversion begins on the next DCLOCK edge after CS falls.
ADS8317IBDGKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential
- 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:
- 2.7V ~ 3.6V, 5V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V, 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8317IBDGKT FAQ
1.How can I place an order for ADS8317IBDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8317IBDGKT 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 ADS8317IBDGKT reliable?
The price and inventory of ADS8317IBDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8317IBDGKT is usually 5 days.
3.What payment methods are accepted for ADS8317IBDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8317IBDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8317IBDGKT?
ADS8317IBDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8317IBDGKT 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 ADS8317IBDGKT?
For technical support, including ADS8317IBDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8317IBDGKT requirements.
6.How does Aetrix verify that ADS8317IBDGKT is sourced from the original manufacturer or authorized distributors?
All ADS8317IBDGKT 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 ADS8317IBDGKT meets industry standards.
7.What is the process for return or replacement of ADS8317IBDGKT?
All ADS8317IBDGKT units undergo pre-shipment inspection (PSI). If there is an issue with ADS8317IBDGKT, 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 ADS8317IBDGKT part is unused and in its original packaging.
Return procedure for ADS8317IBDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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