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Texas Instruments ADS1174IPAPR
- Part No.:
- ADS1174IPAPR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-PowerTQFP
- Datasheet:
-
ADS1174IPAPR.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,451
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Product details
Overview
ADS1174IPAPR from Texas Instruments is a quad-channel, simultaneous-sampling, 16-bit delta-sigma analog-to-digital converter (ADC) with 52kSPS high-speed mode and 10.5kSPS low-power mode. It features 97dB SNR, ±0.3LSB INL, 2µV/°C offset drift, and operates from –40°C to +105°C in an HTQFP-64 PowerPAD™ package. It is used in precision power monitoring and medical instrumentation requiring synchronized multi-channel acquisition.
For engineers reviewing the ADS1174IPAPR datasheet, ADS1174IPAPR pinout, ADS1174IPAPR application, or ADS1174IPAPR equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, and two confirmed alternative parts - all grounded in TI's SBAS373B datasheet and official pin descriptions.
Technical Context
The ADS1174IPAPR integrates four independent 6th-order chopper-stabilized delta-sigma modulators with on-chip linear-phase FIR filters, enabling true simultaneous sampling across all channels with <10ps inter-channel aperture skew. Its digital filter provides 0.005dB passband ripple, 100dB stop-band attenuation, and 76-conversion settling time.
It supports dual operating modes via MODE and CLKDIV pins: High-Speed mode (52.7kSPS, 31mW/ch) and Low-Power mode (10.5kSPS, 7mW/ch), both with identical 97dB SNR and 1LSBPP noise floor. The device accepts external reference (0.5–3.1V differential), uses separate AVDD (5V), DVDD (1.8V), and IOVDD (1.8–3.3V) supplies, and synchronizes conversions via SYNC input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage over temperature. |
| Data Rate (High-Speed) | 52,734 SPS - enables real-time analysis of 23.9kHz bandwidth signals (0.453×fDATA) with 97dB SNR. |
| SNR / THD | 97dB SNR, –105dB THD - supports high-fidelity acquisition in vibration analysis and ECG applications. |
| Offset Drift | 2 µV/°C - ensures stable DC accuracy over industrial temperature range without recalibration. |
| Gain Drift | 2 ppm/°C - maintains channel-to-channel gain matching in multi-sensor systems like 3-phase monitors. |
| Digital Interface | SPI or Frame-Sync serial interface - allows flexible host integration with daisy-chain capability and DRDY/FSYNC dual-function pin. |
| Supply Voltages | AVDD = 4.75–5.25V, DVDD = 1.65–1.95V, IOVDD = 1.65–3.6V - supports mixed-voltage system design and low-power I/O interfacing. |
Pinout & Package
ADS1174IPAPR is housed in an HTQFP-64 PowerPAD™ package (PAP), with exposed thermal pad for enhanced heat dissipation. Pin 1 is located at bottom-left corner (marked by dot); PowerPAD must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP1–AINP4 / AINN1–AINN4 | Differential analog inputs | Four fully independent, matched-input pairs; AINP[4:1]/AINN[4:1] are functional; AINP[8:5]/AINN[8:5] are internally tied to ESD rails and must be left floating or grounded. |
| VREFP / VREFN | Differential reference inputs | Accept 0.5–3.1V differential reference; impedance varies with mode (2.6kΩ high-speed, 13kΩ low-power) - requires low-impedance source or buffer. |
| MODE / CLKDIV | Operating mode control | MODE = 0 selects High-Speed (52.7kSPS); CLKDIV = 1 sets fCLK = 27MHz, fMOD = fCLK/8 (2.13MHz). |
| DOUT1–DOUT4 / DIN | Serial data I/O | DOUT[4:1] carry TDM or discrete channel data; DIN enables daisy-chaining multiple ADS1174IPAPR devices on one SPI bus. |
| DRDY/FSYNC | Multi-function status/control | In SPI mode: open-drain DRDY indicates new data ready; in Frame-Sync mode: rising edge triggers frame sync across all channels. |
| PWDN1–PWDN4 | Per-channel power-down | Active-low control: drives corresponding channel into ultra-low-power state (<10µA quiescent) while others remain active. |
| SYNC | Global conversion trigger | Asynchronous edge-triggered start - enables precise time-aligned sampling across distributed ADC systems. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous sampling | Four channels acquire at exact same instant with <10ps aperture skew - essential for phase-coherent power metering and modal analysis. |
| Linear-phase FIR filter | Zero group-delay variation across 0–23.9kHz band - preserves waveform integrity for multi-tone signal analysis without phase distortion. |
| Two-speed power optimization | Switch between 31mW/ch (52.7kSPS) and 7mW/ch (10.5kSPS) via single MODE pin - eliminates firmware register writes or configuration overhead. |
| Integrated VCOM output | Unbuffered AVDD/2 analog output (Pin 55) - simplifies single-supply sensor biasing and common-mode level setting for differential drivers. |
| Robust input protection | Differential input range ±VREF with absolute limits AGND–0.1V to AVDD+0.1V - defines safe operating window for anti-aliasing filter and driver design. |
Applications
| 3-Phase Power Monitoring | ECG Signal Acquisition |
|---|---|
|
Use Scenario: Real-time measurement of voltage and current waveforms across three AC phases for energy metering and fault detection. IC Role / Device Role / Timing Role: Quad ADC simultaneously samples three phase voltages and neutral current with sub-microsecond inter-channel alignment. Use Value: Enables accurate RMS, harmonic, and power factor calculation without interpolation or software skew correction. |
Use Scenario: High-fidelity acquisition of differential biopotential signals from multiple ECG leads in portable or bedside monitors. IC Role / Device Role / Timing Role: Simultaneous digitization of Lead I, II, III, and augmented limb leads with matched gain/phase response. Use Value: Preserves ST-segment morphology and R-wave timing for arrhythmia detection algorithms. |
| Vibration Modal Analysis | Coriolis Flow Metering |
|
Use Scenario: Capturing synchronized acceleration data from multiple sensors mounted on rotating machinery to identify resonant frequencies. IC Role / Device Role / Timing Role: Four-channel simultaneous sampling captures transient vibration bursts with deterministic latency (76 conversions). Use Value: Eliminates phase ambiguity in FFT-based frequency domain analysis of structural modes. |
Use Scenario: Measuring differential pick-up coil signals from vibrating flow tubes to compute mass flow rate and density. IC Role / Device Role / Timing Role: Simultaneous digitization of two orthogonal tube displacement signals plus temperature and drive feedback. Use Value: Maintains strict phase relationship between velocity and position signals for precise zero-crossing detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1274IPAPR | 24-bit resolution, 105dB SNR, same pinout and interface - higher dynamic range but 3× higher power in high-speed mode (96mW/ch). | Required for ultra-high-precision applications like seismic sensing or calibration standards where 16-bit quantization noise is insufficient. | Select ADS1274IPAPR only when >110dB SFDR or <1ppm gain error is mandatory; ADS1174IPAPR remains optimal for cost-sensitive 16-bit systems. |
| AD7606BSTZ | SAR architecture, 8-channel, ±10V input range, parallel/serial interface - no simultaneous sampling across all channels (uses sequencer), 100kSPS aggregate. | Suitable for multiplexed industrial I/O where per-channel timing alignment is not critical, but ±10V direct sensor interfacing is needed. | Choose AD7606BSTZ for legacy ±10V sensor farms or when parallel interface reduces MCU load; ADS1174IPAPR preferred for phase-coherent acquisition. |
Compared with ADS1274IPAPR and AD7606BSTZ, the ADS1174IPAPR uniquely balances true simultaneous sampling, 16-bit precision, low power, and simple pin-driven control - making it the optimal choice for cost-constrained, phase-critical applications where 24-bit resolution is unnecessary.
Availability
ADS1174IPAPR is available at Aetrix Electronics and suitable for 3-phase power monitors, portable ECG devices, and Coriolis flow meters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS1174IPAPR 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 ADS1174IPAPR belongs to TI's high-performance delta-sigma ADC family designed specifically for simultaneous multi-channel acquisition in power quality, medical diagnostics, and industrial sensing applications.
FAQ
What is the maximum master clock frequency supported by ADS1174IPAPR?
The ADS1174IPAPR supports a maximum master clock (CLK) frequency of 27 MHz, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. At this clock rate and in High-Speed mode with CLKDIV = 1, the modulator operates at 2.13 MHz (fCLK/8), enabling the full 52.7kSPS data rate. Exceeding 27 MHz may cause timing violations or permanent damage.
Does ADS1174IPAPR support true simultaneous sampling across all four channels?
Yes, the ADS1174IPAPR guarantees true simultaneous sampling across all four channels using a shared modulator clock and synchronized FIR filter start cycles. Inter-channel sampling aperture skew is tightly controlled to <10 ps, and the SYNC pin allows external event-triggered acquisition alignment - critical for phase-coherent measurements in power and vibration applications.
Can ADS1174IPAPR operate with a 2.5V reference voltage?
Yes, ADS1174IPAPR fully supports a 2.5V differential reference (VREFP = 2.5V, VREFN = 0V), which is explicitly listed in the Electrical Characteristics table as a typical test condition. This reference yields ±2.5V full-scale input range, and the device maintains 97dB SNR and ±0.3LSB INL at this setting across the full industrial temperature range.
What is the purpose of the VCOM pin on ADS1174IPAPR?
The VCOM pin (Pin 55) on ADS1174IPAPR provides an unbuffered AVDD/2 analog output voltage. It serves as a stable common-mode bias point for driving differential input stages of external amplifiers or sensors, simplifying single-supply system design. It is not intended to drive loads >10µA and must not be shorted or externally driven.
How does the MODE pin affect power consumption and data rate in ADS1174IPAPR?
The MODE pin directly selects between two fixed operating points: MODE = 0 enables High-Speed mode (52.7kSPS, 31mW/ch total), while MODE = 1 activates Low-Power mode (10.5kSPS, 7mW/ch total). No configuration registers or SPI commands are required - the change is immediate and hardware-controlled, minimizing firmware complexity and startup latency for ADS1174IPAPR.
ADS1174IPAPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 52k
- Number of Inputs:
- 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 1.65V ~ 1.95V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-HTQFP (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1174IPAPR FAQ
1.How can I place an order for ADS1174IPAPR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1174IPAPR 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 ADS1174IPAPR reliable?
The price and inventory of ADS1174IPAPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1174IPAPR is usually 5 days.
3.What payment methods are accepted for ADS1174IPAPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1174IPAPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1174IPAPR?
ADS1174IPAPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1174IPAPR 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 ADS1174IPAPR?
For technical support, including ADS1174IPAPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1174IPAPR requirements.
6.How does Aetrix verify that ADS1174IPAPR is sourced from the original manufacturer or authorized distributors?
All ADS1174IPAPR 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 ADS1174IPAPR meets industry standards.
7.What is the process for return or replacement of ADS1174IPAPR?
All ADS1174IPAPR units undergo pre-shipment inspection (PSI). If there is an issue with ADS1174IPAPR, 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 ADS1174IPAPR part is unused and in its original packaging.
Return procedure for ADS1174IPAPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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