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Texas Instruments ADS8317IBDRBT
- Part No.:
- ADS8317IBDRBT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
ADS8317IBDRBT.pdf
- Description:
- IC ADC 16BIT SAR 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,063
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Product details
Overview
ADS8317IBDRBT from Texas Instruments is a 16-bit, SAR analog-to-digital converter with differential input, SPI/SSI-compatible serial interface, and microPower operation (4mW at 2.7V/200kSPS). It features ±1.5LSB max INL, 5LSBPP noise, and operates from 2.7V to 5.5V - designed for precision data acquisition in battery-powered instrumentation.
For engineers reviewing the ADS8317IBDRBT datasheet, ADS8317IBDRBT pinout, ADS8317IBDRBT application, or ADS8317IBDRBT equivalent, key selection criteria include its 200kSPS throughput at 2.7V, ±1.5LSB integral linearity grade, SON-8 thermal-pad package, and differential input support with programmable reference range (0.1V to VDD/2).
Technical Context
The ADS8317IBDRBT implements a capacitive redistribution SAR architecture with integrated sample-and-hold, enabling single-cycle acquisition without pipeline delay. Its conversion is synchronized to an external DCLOCK input, requiring exactly 22 clock cycles per 16-bit result (MSB-first on DOUT).
It supports true bipolar differential input with full-scale range of ±VREF, where VREF is externally supplied between 0.1V and VDD/2. The device enters ultra-low-power shutdown (<0.6μW) when CS/SHDN is high, and exhibits <1μA power-down supply current at both 2.7V and 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes with no missing codes across full supply range. |
| Throughput Rate | 200 kSPS at 2.7V - enables real-time sampling of signals up to ~100 kHz bandwidth (full-power). |
| INL (max) | ±1.5 LSB - ensures monotonicity and ≤0.023% gain error over temperature for calibrated systems. |
| Supply Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V logic domains without level-shifting. |
| Reference Range | 0.1V to VDD/2 - allows flexible scaling: e.g., 1.25V ref at 2.7V supply yields ±1.25V differential input range. |
| Power Dissipation | 4 mW at 2.7V/200kSPS - enables >100-hour operation on a 200mAh coin cell in periodic-sampling applications. |
| Package | SON-8 (DRB) with exposed thermal pad - requires PCB soldering of thermal pad for thermal performance and mechanical reliability. |
Pinout & Package
ADS8317IBDRBT is housed in an 8-pin SON (DRB) package with an exposed thermal pad on the bottom. The thermal pad must be soldered to the PCB for thermal management and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF | Analog input | External reference voltage input; sets full-scale differential range (±VREF); accepts 0.1V to VDD/2. |
| +IN | Analog input | Noninverting differential analog input; sampled relative to –IN during conversion cycle. |
| –IN | Analog input | Inverting differential analog input; common-mode voltage must stay within –0.2V to VDD+0.2V. |
| GND | Power-supply connection | Analog ground reference for internal circuitry and ADC core; must be low-impedance and separated from digital ground if possible. |
| CS/SHDN | Digital input | Active-low chip select; drives device into shutdown mode (sub-μW) when held high. |
| DOUT | Digital output | CMOS/LVCMOS serial output; MSB-first, SPI/SSI-compatible; tri-states when CS/SHDN is high. |
| DCLOCK | Digital input | Asynchronous master clock input; determines conversion speed (24kHz–4.8MHz at 2.7V); rising edge triggers sampling. |
| VDD | Power-supply connection | Single positive supply (2.7V–5.5V); powers analog and digital sections; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| MicroPower operation | 4mW at 2.7V/200kSPS and 0.6μW shutdown - extends battery life in portable DAQ and sensor nodes. |
| Differential input architecture | True bipolar ±VREF input with 20pF differential capacitance - rejects common-mode noise and enables precision bridge/sensor measurements. |
| Factory-trimmed linearity | ±1.5LSB max INL with non-volatile trim storage - eliminates need for system-level calibration in most industrial applications. |
| SPI/SSI-compatible interface | MSB-first, 22-clock-cycle frame with no pipeline delay - simplifies FPGA/microcontroller firmware integration and timing budgeting. |
| Flexible reference scaling | 0.1V to VDD/2 reference range - supports low-voltage sensors (e.g., 100mV strain gauges) while maintaining 16-bit resolution. |
Applications
| Battery-Operated Instrumentation | Isolated Data Acquisition |
|---|---|
Use Scenario: Handheld multimeter acquiring 16-bit voltage readings from precision shunt resistors using a 3.3V Li-ion supply. IC Role / Device Role / Timing Role: Primary ADC performing synchronous sampling with external crystal-derived DCLOCK; interfaces directly to low-power MCU via SPI. Use Value: 4mW power at 200kSPS enables >120 hours runtime on 250mAh battery; ±1.5LSB INL avoids system recalibration. | Use Scenario: Industrial current monitor with galvanic isolation, measuring motor phase currents in a 3-phase inverter. IC Role / Device Role / Timing Role: Isolated-side ADC digitizing differential shunt voltage; referenced to isolated 1.25V LDO; clocked by isolated oscillator. Use Value: Differential input rejects common-mode transients from switching IGBTs; 200kSPS captures current ripple harmonics up to 100kHz. |
| Remote Sensor Node | Vibration Analysis System |
Use Scenario: Wireless structural health monitoring node with piezoelectric accelerometer and LoRaWAN backhaul. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated every 100ms to capture 1024-sample burst; powered from supercapacitor. Use Value: Sub-μA shutdown current preserves energy between bursts; 5LSBPP noise ensures resolution of sub-mg vibration signatures. | Use Scenario: Bearing fault detection unit sampling accelerometer outputs at 50kSPS for FFT-based envelope analysis. IC Role / Device Role / Timing Role: High-fidelity front-end ADC feeding FPGA-based spectral processing; uses external 2.5V reference for dynamic range. Use Value: 84.8dB SNR at 10kHz enables detection of early-stage bearing defects buried in noise floor; SON-8 footprint saves PCB area. |
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 variant; ±2LSB max INL; 250kSPS at 5V only; no 2.7V operation. | Requires 5V supply and higher power (10mW); less suitable for battery systems. | Select when 5V system already exists and highest throughput (250kSPS) is mandatory. |
| ADS8860IRSAT | 16-bit SAR, 1MSPS, SPI interface; ±1.5LSB INL; 1.8V–3.6V supply; different pinout (10-pin WSON). | Higher speed but incompatible package and pin mapping; requires layout change. | Select when sampling rate >200kSPS is needed and board redesign is acceptable. |
Compared with ADS8321IDGKT and ADS8860IRSAT, the ADS8317IBDRBT uniquely balances ultra-low 2.7V operation, SON-8 space efficiency, and factory-trimmed ±1.5LSB linearity - making it optimal for compact, battery-constrained, isolated, or thermally sensitive designs where 200kSPS suffices.
Availability
ADS8317IBDRBT is available at Aetrix Electronics and suitable for battery-operated instrumentation, isolated data acquisition, remote sensor nodes, and vibration analysis systems requiring stable component supply, long-term manufacturability, and guaranteed TI second-sourcing.
Supply support for ADS8317IBDRBT 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 ADS8317IBDRBT belongs to TI's precision data converter portfolio, engineered specifically for low-power, high-resolution sampling in portable, isolated, and multichannel data acquisition systems where size, power, and linearity are critical.
FAQ
What is the maximum sampling rate of the ADS8317IBDRBT at 2.7V?
The ADS8317IBDRBT achieves a maximum throughput rate of 200 kSPS when operated at 2.7V supply voltage and 4.8 MHz DCLOCK frequency. This is confirmed in the Electrical Characteristics table for VDD = +2.7V, where "Throughput rate (22 DCLOCKs)" is specified as 200 kSPS. At 5V, the device supports up to 250 kSPS.
Does the ADS8317IBDRBT require an external reference voltage?
Yes, the ADS8317IBDRBT requires an external reference voltage applied to the REF pin. The reference must be between 0.1V and VDD/2 (e.g., 1.25V at 2.7V supply), and directly defines the full-scale differential input range (±VREF). No internal reference is provided - the device relies entirely on this external source for accuracy and scaling.
What is the meaning of "IB" in the ADS8317IBDRBT part number?
The "IB" suffix in ADS8317IBDRBT denotes the high-accuracy grade of the device, specifying ±1.5 LSB maximum integral linearity error (INL) over temperature, compared to ±2 LSB for the standard "I" grade (e.g., ADS8317IDRBT). This grade is verified per the ordering information table and applies to both MSOP-8 and SON-8 packages.
Can the ADS8317IBDRBT operate with a single-ended input configuration?
Yes, the ADS8317IBDRBT supports single-ended input operation: tie –IN to a stable DC bias (e.g., VREF), and apply the signal to +IN. In this mode, the full-scale range becomes 0V to 2×VREF (unipolar), as described in the Theory of Operation section. However, differential mode is preferred for noise rejection and offset cancellation.
What is the purpose of the thermal pad on the ADS8317IBDRBT SON-8 package?
The exposed thermal pad on the ADS8317IBDRBT's DRB (SON-8) package must be soldered to the PCB ground plane to ensure proper thermal dissipation and mechanical reliability. Per the Pin Configuration diagram, failure to solder the pad compromises thermal performance (RθJA = 45.8°C/W) and may cause parametric drift or long-term solder joint fatigue.
ADS8317IBDRBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 8-VDFN Exposed Pad
- 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-SON (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8317IBDRBT FAQ
1.How can I place an order for ADS8317IBDRBT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8317IBDRBT 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 ADS8317IBDRBT reliable?
The price and inventory of ADS8317IBDRBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8317IBDRBT is usually 5 days.
3.What payment methods are accepted for ADS8317IBDRBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8317IBDRBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8317IBDRBT?
ADS8317IBDRBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8317IBDRBT 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 ADS8317IBDRBT?
For technical support, including ADS8317IBDRBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8317IBDRBT requirements.
6.How does Aetrix verify that ADS8317IBDRBT is sourced from the original manufacturer or authorized distributors?
All ADS8317IBDRBT 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 ADS8317IBDRBT meets industry standards.
7.What is the process for return or replacement of ADS8317IBDRBT?
All ADS8317IBDRBT units undergo pre-shipment inspection (PSI). If there is an issue with ADS8317IBDRBT, 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 ADS8317IBDRBT part is unused and in its original packaging.
Return procedure for ADS8317IBDRBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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