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Texas Instruments ADS1217IPFBR
- Part No.:
- ADS1217IPFBR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-TQFP
- Datasheet:
-
ADS1217IPFBR.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,727
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Product details
Overview
ADS1217IPFBR from Texas Instruments is a 24-bit delta-sigma analog-to-digital converter with 8-channel multiplexed inputs, programmable gain amplifier (1–128), on-chip 1.25V/2.5V reference, and SPI interface - designed for high-precision industrial measurement systems requiring ±2VREF full-scale input, <1 mW power at 3V, and 22-bit effective resolution at PGA=1.
For engineers reviewing the ADS1217IPFBR datasheet, ADS1217IPFBR pinout, ADS1217IPFBR application, or ADS1217IPFBR equivalent, key selection criteria include differential input impedance (10 MΩ/PGA), burnout current sources (2 µA), offset DAC range (±VREF/PGA), sinc3 filter settling (3 conversion cycles), and TQFP-48 package compatibility with industrial PCB layouts.
Technical Context
The ADS1217IPFBR implements a 2nd-order delta-sigma modulator with programmable sinc2/sinc3/fast-settling digital filters and supports ratiometric measurements via differential VREF+ and VREF– inputs. Its internal PGA enables signal conditioning before quantization, while dual 8-bit IDACs (IDAC1/IDAC2) provide independent current outputs for sensor biasing or offset correction.
It integrates an input buffer (enabling >1 GΩ effective impedance when active), open/short detection via burnout current sources, and on-chip self-calibration for offset and gain errors. The device operates across AVDD = 2.7–5.25 V and supports data rates up to 1 kHz with single-cycle settling in fast mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit no-missing-codes performance ensures unambiguous digitization of ultra-low-level signals without code gaps. |
| INL (max) | 0.0012% of FSR (end-point fit) guarantees high linearity for precision weighing and chromatography calibration. |
| Effective Resolution | 22 bits at PGA = 1 (19 bits at PGA = 128) defines usable dynamic range after noise and distortion are factored in. |
| Data Rate | Up to 1 kHz programmable output rate allows real-time monitoring in portable instrumentation and smart transmitters. |
| Reference | On-chip selectable 1.25 V / 2.5 V reference eliminates external reference ICs and simplifies ratiometric sensor interfacing. |
| Power Consumption | <1 mW at VDD = 3 V enables battery-powered operation in handheld analyzers and field-deployable sensors. |
| Input Channels | 8 fully differential multiplexed inputs support simultaneous multi-sensor acquisition in process control systems. |
Pinout & Package
TQFP-48 package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN7 | Differential analog input channels | Support 8 independent differential pairs; configurable as any positive/negative combination via internal mux. |
| AINCOM | Common-mode reference for all analog inputs | Serves as shared reference node for pseudo-differential or single-ended configurations with buffer enabled. |
| VREF+, VREF– | Differential reference voltage inputs | Enable ratiometric measurement; accept external references or connect to internal VREFOUT for fixed-ratio scaling. |
| IDAC1, IDAC2 | Current DAC outputs | Provide 0.5–20 mA programmable sink/source for RTD biasing, bridge excitation, or open-circuit detection. |
| BUFEN | Input buffer enable control | When asserted, increases input impedance to >1 GΩ but reduces input voltage range and increases current draw. |
| DRDY | Data-ready indicator | Active-low signal pulses when new conversion result is available in output register; synchronizes host read timing. |
| SCLK, DIN, DOUT, CS | SPI-compatible serial interface | Supports standard 4-wire SPI with Schmitt-trigger inputs; POL bit selects clock polarity for legacy controller compatibility. |
| D0–D7 | Configurable digital I/O | Eight bidirectional GPIO pins usable for status signaling, sensor control, or system-level handshaking. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle settling mode | Enables rapid channel switching in dynamic multi-sensor systems without waiting for full filter convergence. |
| On-chip burnout current sources | 2 µA sourcing/sinking per channel detects open or shorted thermocouples, strain gauges, or RTDs without external circuitry. |
| Programmable sinc filters | Sinc2 (2-cycle), sinc3 (3-cycle), and fast-settling (1-cycle) modes allow trade-off between noise rejection and response time. |
| Offset DAC (8-bit) | ±VREF/PGA range corrects sensor zero-point drift digitally, preserving full 24-bit resolution without hardware recalibration. |
| Self- and system calibration | Internal offset/gain calibration commands reduce initial errors; system calibration supports end-of-line adjustment with known stimuli. |
| Temperature sensing diode | On-chip diode connected via AIN mux enables embedded temperature monitoring without external components. |
Applications
| Liquid/Gas Chromatography | Industrial Process Control |
|---|---|
Use Scenario: High-resolution detection of eluted chemical compounds using photodiode or electrochemical sensors with microvolt-level output. IC Role / Device Role / Timing Role: Primary ADC capturing low-noise, low-drift analog signals from detector front-ends; synchronized via DRDY to chromatogram timing engine. Use Value: 24-bit resolution and 130 dB CMRR at 60 Hz reject mains interference during long integration periods, ensuring peak area accuracy. |
Use Scenario: Monitoring pressure, flow, and temperature in PLC-based control loops with 4–20 mA transmitters and HART interfaces. IC Role / Device Role / Timing Role: Signal conditioner and digitizer for analog sensor inputs; IDACs drive 4–20 mA loop; SPI interfaces to ARM-based controller. Use Value: On-chip 1.25 V reference and burnout detection eliminate discrete components, reducing BOM count and improving field reliability. |
| Weigh Scales | Blood Analysis Systems |
Use Scenario: Precision load cell readout in medical scales and laboratory balances requiring <1 ppm repeatability over temperature. IC Role / Device Role / Timing Role: Delta-sigma ADC with PGA and internal calibration performing continuous 10 Hz–100 Hz sampling of bridge outputs. Use Value: 0.0012% INL and 0.02 ppm/°C offset drift ensure NTEP/EC type approval compliance without frequent recalibration. |
Use Scenario: Electrochemical detection in point-of-care blood glucose or electrolyte analyzers with disposable sensor strips. IC Role / Device Role / Timing Role: Dual-function ADC and current source: digitizes amperometric sensor current while biasing working electrode via IDAC1. Use Value: Matched IDACs (0.25% gain mismatch) and 19-bit effective resolution at PGA=128 resolve sub-nA currents critical for low-concentration assays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1220IPWR | 4-channel, 24-bit, integrated PGA (1–128), but no IDACs or burnout sources; lower power (350 µA typ). | Lacks dual IDACs and open-circuit detection - unsuitable for 4–20 mA loop or RTD diagnostics. | Select when channel count and power are prioritized over sensor excitation and fault detection. |
| AD7177-2BRUZ | 8-channel, 32-bit, 10 kSPS max, no on-chip reference or IDACs; requires external REF and excitation circuitry. | Higher resolution but lacks integrated biasing - adds design complexity and board space for chromatography front-ends. | Select for ultra-high-precision lab instruments where external reference stability justifies added cost and layout effort. |
Compared with ADS1220IPWR and AD7177-2BRUZ, the ADS1217IPFBR uniquely combines 8-channel multiplexing, dual IDACs, burnout detection, and on-chip reference in a single TQFP-48 package - enabling compact, self-contained sensor signal chains for industrial and medical field devices without external support components.
Availability
ADS1217IPFBR is available at Aetrix Electronics and suitable for industrial process control, liquid/gas chromatography, and portable instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing for medical and safety-critical designs.
Supply support for ADS1217IPFBR 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 industrial-grade ICs.
The ADS1217IPFBR belongs to TI's high-accuracy delta-sigma ADC product line, engineered specifically for demanding measurement applications including smart transmitters, weigh scales, and analytical instrumentation where noise, drift, and fault detection are critical.
FAQ
What is the maximum data rate supported by the ADS1217IPFBR?
The ADS1217IPFBR supports programmable data output rates up to 1 kHz in fast-settling mode. At lower rates (e.g., 10 Hz), it achieves 24-bit no-missing-codes performance and 130 dB common-mode rejection at 60 Hz - making ADS1217IPFBR ideal for both high-speed monitoring and ultra-stable precision measurement tasks.
Does the ADS1217IPFBR include an internal voltage reference?
Yes, the ADS1217IPFBR integrates a selectable on-chip voltage reference delivering either 1.25 V or 2.5 V, controlled by REF HI and REF EN bits in the setup register. When enabled, VREFOUT must be bypassed with a 0.1 µF capacitor to AGND - a key implementation detail for stable ADS1217IPFBR operation in noise-sensitive environments.
How does the burnout current feature work on the ADS1217IPFBR?
The ADS1217IPFBR provides two 2 µA burnout current sources - one sourcing from the selected AIN+ channel and one sinking from AIN–. Enabled via the Burnout bit in the ACR register, they detect open circuits (full-scale reading) or shorts (0 V differential) - a critical diagnostic capability for ADS1217IPFBR deployments in remote or safety-critical sensor networks.
Can the ADS1217IPFBR operate from a 3 V supply?
Yes, the ADS1217IPFBR operates across AVDD = 2.7 V to 5.25 V. At AVDD = 3 V, it delivers 24-bit resolution, 0.0012% INL, and <1.4 mW power dissipation - validated in the official datasheet under AVDD = 3 V conditions. This makes ADS1217IPFBR suitable for battery-powered portable instrumentation without performance compromise.
What package type is used for the ADS1217IPFBR?
The ADS1217IPFBR uses a TQFP-48 package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad, designated by the PFB suffix in TI's ordering nomenclature. This surface-mount package supports automated assembly and provides adequate thermal performance for continuous operation in industrial enclosures up to +85°C.
ADS1217IPFBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 780
- Number of Inputs:
- 8
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- MUX-PGA-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.3V, 5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-TQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1217IPFBR FAQ
1.How can I place an order for ADS1217IPFBR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1217IPFBR 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 ADS1217IPFBR reliable?
The price and inventory of ADS1217IPFBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1217IPFBR is usually 5 days.
3.What payment methods are accepted for ADS1217IPFBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1217IPFBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1217IPFBR?
ADS1217IPFBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1217IPFBR 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 ADS1217IPFBR?
For technical support, including ADS1217IPFBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1217IPFBR requirements.
6.How does Aetrix verify that ADS1217IPFBR is sourced from the original manufacturer or authorized distributors?
All ADS1217IPFBR 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 ADS1217IPFBR meets industry standards.
7.What is the process for return or replacement of ADS1217IPFBR?
All ADS1217IPFBR units undergo pre-shipment inspection (PSI). If there is an issue with ADS1217IPFBR, 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 ADS1217IPFBR part is unused and in its original packaging.
Return procedure for ADS1217IPFBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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