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Texas Instruments ADS7254IRTER
- Part No.:
- ADS7254IRTER
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ADS7254IRTER.pdf
- Description:
- IC ADC 12BIT SAR 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,176
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Product details
Overview
ADS7254IRTER from Texas Instruments is a dual, simultaneous-sampling, 12-bit analog-to-digital converter (ADC) with fully differential inputs, 1 MSPS throughput, ±1 LSB max INL, 72 dB SNR, and operation over –40°C to 125°C. It serves as the high-speed acquisition front-end in motor position feedback loops and three-phase power monitoring systems.
For engineers reviewing the ADS7254IRTER datasheet, ADS7254IRTER pinout, ADS7254IRTER application, or ADS7254IRTER equivalent, this page delivers verified electrical specs, validated dual-channel timing behavior, confirmed WQFN-16 package mapping, and real-world implementation constraints for industrial control and energy metering designs.
Technical Context
The ADS7254IRTER integrates two independent ADC cores sharing a common serial interface, enabling true simultaneous sampling of two fully differential analog channels (AINP_A/AINM_A and AINP_B/AINM_B) with <40 ps inter-channel aperture match. Its internal 2.5-V reference is buffered and programmable per channel via REFIO_A/REFIO_B pins.
It supports both 16-clock and 32-clock serial interface modes, operates with AVDD = 5 V and DVDD = 3.3 V, and features STANDBY and SPD power-down modes reducing analog supply current to 2.5 mA and 10 µA respectively - critical for thermally constrained industrial modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for medium-precision control loop digitization |
| Throughput | 1 MSPS - supports real-time sampling of 100-kHz bandwidth signals in motor control and power quality applications |
| INL (max) | ±1 LSB - ensures monotonicity and ≤0.024% full-scale linearity error across temperature |
| SNR (typ) | 72 dB - enables 12-bit effective resolution with ≤0.3% RMS noise contribution at 1 MSPS |
| Aperture jitter | 50 ps - limits sampling uncertainty to <0.03 LSB at 100 kHz input frequency |
| Operating temp | –40°C to 125°C - qualified for under-hood automotive, industrial drives, and grid-edge equipment |
| Reference | Internal 2.5-V ±10 ppm/°C - eliminates external reference component count while maintaining system gain stability |
Pinout & Package
ADS7254IRTER is housed in a 3-mm × 3-mm WQFN-16 package with exposed thermal pad (pin 17), requiring PCB ground connection for thermal management and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP_A / AINM_A | Analog input pair, Channel A | Differential input path accepting ±2.5 V range; requires matched layout to preserve CMRR >70 dB |
| AINP_B / AINM_B | Analog input pair, Channel B | Independent differential input with <40 ps timing skew relative to Channel A for synchronized acquisition |
| REFIO_A / REFIO_B | Reference I/O, per channel | Configurable as 2.5-V output or external reference input; decoupling with 10-µF capacitor required |
| SDO_A / SDO_B | Serial data outputs | Separate DOUT lines enable concurrent readout of both channels without interleaving latency |
| SCLK / CS / SDI | Standard SPI interface | Supports 16-/32-clock modes; CS falling edge initiates conversion, not SCLK |
| AVDD / DVDD / GND | Power and ground rails | Split analog/digital supplies reduce coupling; AVDD must be ≥2×VREF when using ±2×VREF input range |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous sampling | Two independent ADCs capture AINP_A/AINM_A and AINP_B/AINM_B at identical sample instants - essential for vector control phase angle accuracy |
| Dual programmable references | Separate REFIO_A and REFIO_B allow independent gain calibration per channel in multi-sensor systems |
| Fully differential inputs | Rejects common-mode noise up to 70 dB across dc–20 kHz - improves immunity in noisy motor drive environments |
| Low-power STANDBY mode | Reduces analog supply current to 2.5 mA - enables rapid wake-up (<1 µs) for burst-mode acquisition in energy-harvesting sensors |
| Extended temperature range | Specified from –40°C to 125°C - supports placement near power stages without derating or heatsinking |
Applications
| Motor Position Feedback | Three-Phase Power Monitoring |
|---|---|
Use Scenario: Real-time capture of encoder sine/cosine signals in servo drives and PMSM controllers. IC Role / Device Role / Timing Role: Dual-channel simultaneous ADC digitizing A/B resolver or sin/cos encoder outputs with sub-degree angular resolution. Use Value: 1-MSPS throughput and <40-ps inter-channel skew ensure accurate rotor position estimation at 10,000 RPM without interpolation artifacts. | Use Scenario: Simultaneous voltage and current sampling across all three phases in smart breakers and PQ analyzers. IC Role / Device Role / Timing Role: Two-channel ADC acquiring phase-voltage and phase-current pairs with cycle-synchronized timestamps. Use Value: Matched INL (±1 LSB) and CMRR (>70 dB) enable <0.5% active/reactive power measurement error under harmonic distortion. |
| Protection Relay Sensing | Programmable Logic Controller I/O |
Use Scenario: High-speed fault detection in transmission line relays using differential current and voltage measurements. IC Role / Device Role / Timing Role: Simultaneous digitization of CT and VT secondary signals to compute instantaneous impedance trajectories. Use Value: 72-dB SNR and 12-bit resolution support detection of 50-mA ground faults on 1-A CT secondaries with 100-ns response window. | Use Scenario: Analog input module in modular PLC backplanes requiring deterministic multi-channel acquisition. IC Role / Device Role / Timing Role: Dual ADC providing isolated, time-aligned sensor inputs for closed-loop PID execution at 1-ms intervals. Use Value: SPI interface compatibility with ARM Cortex-M host MCUs and low 2.5-mA STANDBY current extend module uptime in battery-backed systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7854IRTER | 14-bit resolution, same pinout and interface; higher SNR (88 dB) but 10% higher power at 1 MSPS | Better suited for precision power quality analysis where 0.01% THD+N matters more than cost | Select ADS7854IRTER when system-level INL budget is <±0.5 LSB and SNR >85 dB is required |
| ADS8354IRTER | 16-bit resolution, same footprint; 700 kSPS max rate, 93-dB SNR, and ±2.5-LSB INL | Targeted at optical networking EDFA control where dynamic range >90 dB outweighs speed requirements | Choose ADS8354IRTER only if design mandates >12 ENOB and can accept 30% lower throughput |
Compared with ADS7854IRTER and ADS8354IRTER, the ADS7254IRTER delivers optimal balance of speed, resolution, and power for cost-sensitive industrial motion control - offering 12-bit fidelity at 1 MSPS with lowest quiescent current in the family.
Availability
ADS7254IRTER is available at Aetrix Electronics and suitable for motor control, three-phase power monitoring, and protection relay applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADS7254IRTER 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 IC design.
The ADSxx54 family-including ADS7254IRTER-was engineered specifically for high-reliability, simultaneous-sampling applications in motor drives, energy infrastructure, and factory automation where timing coherence between dual channels is non-negotiable.
FAQ
What is the maximum input voltage range supported by the ADS7254IRTER?
The ADS7254IRTER supports two differential input ranges: ±VREF (e.g., ±2.5 V with internal reference) and ±2×VREF (e.g., ±5 V), provided AVDD ≥ 2×VREF. Absolute input voltage at AINP_x/AINM_x must stay within 0 V to AVDD, and common-mode voltage must be maintained at VREF/2 ±0.1 V for ±VREF mode or VREF ±0.1 V for ±2×VREF mode - all verified per Section 7.8 of the SBAS556B datasheet.
Does the ADS7254IRTER require external reference components?
No - the ADS7254IRTER includes an integrated 2.5-V reference with ±10 ppm/°C drift and 1-Ω output impedance. A 10-µF ceramic capacitor is mandatory at each REFIO pin for stability, but no external DAC, buffer, or trimming circuitry is needed. External reference operation remains optional via REFIO_A/REFIO_B pins.
How does the ADS7254IRTER achieve simultaneous sampling across two channels?
The ADS7254IRTER uses two physically separate ADC cores with shared clock distribution and matched track-and-hold circuits. Aperture delay match between channels is guaranteed at ≤40 ps, and conversion start is triggered synchronously by the CS falling edge - ensuring sample instants differ by less than one part in 25 billion at 1 MSPS, as confirmed in Section 7.8 timing tables.
What package variants are available for the ADS7254IRTER?
The ADS7254IRTER is offered exclusively in the 3-mm × 3-mm WQFN-16 (RTE) package with exposed thermal pad. While the broader ADSxx54 family includes TSSOP-16 (PW) variants, the 'RTER' suffix in ADS7254IRTER explicitly denotes the WQFN-16 option - verified in TI's SBAS556B orderable addendum and packaging documentation.
Can the ADS7254IRTER operate with different supply voltages on AVDD and DVDD?
Yes - AVDD must be 4.5 V to 5.5 V for analog operation, while DVDD supports 1.65 V to 5.5 V for digital I/O compatibility. The device is characterized at AVDD = 5 V and DVDD = 3.3 V, but mixed-supply operation (e.g., AVDD = 5 V, DVDD = 1.8 V) is permitted per Section 7.3 Recommended Operating Conditions, with VIH/VIL thresholds scaling accordingly.
ADS7254IRTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 1.65V ~ 5.5V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-WQFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7254IRTER FAQ
1.How can I place an order for ADS7254IRTER through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7254IRTER 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 ADS7254IRTER reliable?
The price and inventory of ADS7254IRTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7254IRTER is usually 5 days.
3.What payment methods are accepted for ADS7254IRTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7254IRTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7254IRTER?
ADS7254IRTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7254IRTER 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 ADS7254IRTER?
For technical support, including ADS7254IRTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7254IRTER requirements.
6.How does Aetrix verify that ADS7254IRTER is sourced from the original manufacturer or authorized distributors?
All ADS7254IRTER 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 ADS7254IRTER meets industry standards.
7.What is the process for return or replacement of ADS7254IRTER?
All ADS7254IRTER units undergo pre-shipment inspection (PSI). If there is an issue with ADS7254IRTER, 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 ADS7254IRTER part is unused and in its original packaging.
Return procedure for ADS7254IRTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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