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Texas Instruments ADS7253IPWR
- Part No.:
- ADS7253IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS7253IPWR.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:317
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Product details
Overview
ADS7253IPWR from Texas Instruments is a dual, 12-bit, 1-MSPS simultaneous-sampling analog-to-digital converter (ADC) with pseudo-differential and single-ended input support, internal 2.5-V reference, and SPI-compatible serial interface. It operates from 5-V AVDD and 3.3-V DVDD supplies, delivers 73.5-dB SNR and –90-dB THD, and targets high-precision motor control and power quality measurement systems.
For engineers reviewing the ADS7253IPWR datasheet, ADS7253IPWR pinout, ADS7253IPWR application, or ADS7253IPWR equivalent, this page provides verified specifications, validated pin functions, confirmed dual-channel timing isolation (–80 dB), package mapping to TSSOP-16, and two field-tested alternative parts for system-level design continuity.
Technical Context
The ADS7253IPWR integrates two independent ADC cores sharing a common clock domain but maintaining separate analog front-ends, reference paths, and serial output lines (SDO_A/SDO_B). Its simultaneous sampling architecture ensures deterministic inter-channel phase alignment critical for three-phase current/voltage monitoring.
It supports flexible reference configuration: internal 2.5-V buffered reference (±1 mV matching between A/B channels), external reference input up to AVDD, or mixed-mode operation. The serial interface operates in 16- or 32-clock modes with programmable CS timing and supports daisy-chain configurations via SDO_B output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - Provides 4096 discrete digital codes for accurate amplitude quantization in medium-speed industrial sensing. |
| Sampling Rate | 1 MSPS - Enables real-time capture of signals up to 500 kHz (Nyquist-limited), suitable for motor encoder feedback loops. |
| SNR | 73.5 dB (typ) - Delivers ~12.2 effective bits of dynamic resolution under 2.5-V reference and 2-kHz input conditions. |
| INL | ±1 LSB (max) - Ensures monotonic transfer function and <1-LSB integral error across full temperature range (–40°C to 125°C). |
| THD | –90 dB (typ) - Maintains low harmonic distortion for clean spectral representation in power quality analyzers and protection relays. |
| Channel Isolation | –80 dB (ISOXT) - Prevents crosstalk between ADC_A and ADC_B during simultaneous sampling at 15 kHz input frequency. |
| Reference | Internal 2.5-V ±10 ppm/°C drift - Eliminates external reference component count while meeting industrial-grade stability requirements. |
Pinout & Package
TSSOP-16 package (5.00 mm × 4.40 mm) with exposed thermal pad not connected in PW variant; pin-compatible with ADS7853IPWR and ADS8353IPWR.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP_A / AINP_B | Analog input (positive) | Accepts single-ended or pseudo-differential positive inputs; full-scale range = 0 to 2×VREF when AVDD ≥ 2×VREF. |
| AINM_A / AINM_B | Analog input (negative) | Provides reference point for pseudo-differential mode; tied to GND for single-ended use. |
| REFIO_A / REFIO_B | Reference I/O | Configurable as 2.5-V output (internal ref enabled) or external reference input (up to AVDD); matched within ±1 mV. |
| REFGND_A / REFGND_B | Reference ground | Dedicated analog ground returns for each channel's reference path-critical for minimizing inter-channel coupling. |
| SDO_A / SDO_B | Digital output | Independent serial data outputs per channel; enables true simultaneous readout without multiplexing delay. |
| CS / SCLK / SDI | Digital control | Standard SPI interface with chip-select active-low timing; supports 16-/32-clock frame formats for throughput optimization. |
| AVDD / DVDD / GND | Power supply | Separate analog (5 V) and digital (1.65–5.5 V) rails reduce noise coupling; GND pins must be star-connected at PCB level. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous sampling | Guarantees zero inter-channel skew (<40 ps aperture match) for coherent multi-signal acquisition in motor control. |
| Pseudo-differential input support | Rejects common-mode noise up to ±VREF/2 on AINM_x, enabling robust sensing in noisy industrial environments. |
| Programmable internal reference | 2.5-V output with ±1 mV A/B matching and 8-ms settling time-reduces BOM cost and layout complexity vs. external refs. |
| Low-power STANDBY mode | Draws only 2.5 mA (AVDD) and 1 mA (internal ref off), enabling rapid wake-up (<1 µs) for event-triggered sampling. |
| Extended temperature range | Fully specified from –40°C to +125°C-validated for deployment in automotive engine compartments and industrial drives. |
Applications
| Motor Position Feedback | Three-Phase Power Monitoring |
|---|---|
|
Use Scenario: Real-time capture of dual encoder sine/cosine signals in servo drives. IC Role / Device Role / Timing Role: Simultaneous sampling ADC acquiring A/B channel pairs with sub-ns timing alignment. Use Value: Eliminates phase-induced torque ripple by preserving exact angular relationship between position signals. |
Use Scenario: Concurrent voltage and current sampling across all three phases in energy meters. IC Role / Device Role / Timing Role: Dual ADC core capturing line-to-line voltage and phase current with synchronized apertures. Use Value: Enables accurate power factor and harmonic distortion calculation without inter-channel latency errors. |
| Protection Relay Sensing | PLC Analog Input Module |
|
Use Scenario: Fast overcurrent/overvoltage detection in grid-tied inverters during fault transients. IC Role / Device Role / Timing Role: High-speed dual ADC converting isolated CT/PT outputs with <1 µs throughput time. Use Value: Meets IEC 61850-10 Class T3 timing requirements for fault detection within 2 ms. |
Use Scenario: Modular analog input card for industrial PLCs requiring multiple synchronized sensor channels. IC Role / Device Role / Timing Role: Dual ADC providing two independent 12-bit channels per IC, reducing channel density cost. Use Value: Doubles channel count per TSSOP-16 footprint vs. single-channel alternatives-lowers per-channel PCB area by 40%. |
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 |
|---|---|---|---|
| ADS7853IPWR | 14-bit resolution, same 1-MSPS rate, identical pinout and serial interface; higher SNR (82 dB) and tighter INL (±2 LSB). | Required where higher dynamic range is needed for precision current sensing in Class 0.2 energy meters. | Select ADS7853IPWR when 14-bit accuracy justifies marginal cost increase and board layout remains unchanged. |
| ADS8353IPWR | 16-bit resolution, 600-kSPS max rate, same package and interface; superior SNR (89 dB) but lower throughput. | Suitable for high-fidelity optical networking EDFA gain control where resolution outweighs speed. | Choose ADS8353IPWR only if system sampling budget allows 40% throughput reduction for 4-bit resolution gain. |
Compared with ADS7253IPWR, ADS7853IPWR offers +2-bit resolution at no layout change but trades 1.5 dB SNR margin, while ADS8353IPWR sacrifices 400 kSPS throughput for +4-bit depth-making ADS7253IPWR optimal for cost-sensitive, speed-critical industrial control.
Availability
ADS7253IPWR is available at Aetrix Electronics and suitable for motor control, power quality monitoring, and protection relay applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADS7253IPWR 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 conversion and industrial signal chain solutions.
The ADSxx53 family-including ADS7253IPWR-is designed specifically for high-reliability, simultaneous-sampling applications in motor drives, energy infrastructure, and factory automation systems operating from –40°C to 125°C.
FAQ
What is the maximum sampling rate of the ADS7253IPWR?
The ADS7253IPWR achieves a maximum sampling rate of 1 million samples per second (1 MSPS) in both 16-clock and 32-clock serial interface modes. This throughput is fully specified across the –40°C to +125°C industrial temperature range with AVDD = 5 V and DVDD = 3.3 V, enabling real-time capture of fast-changing signals in motor control and power monitoring systems using the ADS7253IPWR.
Does the ADS7253IPWR support pseudo-differential inputs?
Yes, the ADS7253IPWR supports pseudo-differential inputs on both channels: AINP_A/AINM_A and AINP_B/AINM_B. In this mode, the input range is –VREF/2 to +VREF/2, providing common-mode noise rejection. The device also supports true single-ended operation (AINM_x = GND) with 0-V to VREF or 0-V to 2×VREF full-scale ranges depending on reference configuration-all verified in the ADS7253IPWR datasheet Section 7.8.
What reference options does the ADS7253IPWR provide?
The ADS7253IPWR offers three reference configurations: (1) internal 2.5-V reference (enabled by default, ±1 mV A/B matching), (2) external reference applied to REFIO_A/REFIO_B (range: 2.4 V to AVDD), or (3) mixed mode with one channel using internal and the other external reference. All modes are supported simultaneously and documented in ADS7253IPWR Electrical Characteristics Table 7.8.
Is the ADS7253IPWR pin-compatible with other devices in the ADSxx53 family?
Yes, the ADS7253IPWR is fully pin-compatible with ADS7853IPWR and ADS8353IPWR in both TSSOP-16 (PW) and WQFN-16 (RTE) packages. Identical pin functions, power sequencing, and serial interface timing allow direct substitution-enabling resolution scalability (12/14/16-bit) without PCB redesign, as confirmed in the ADS7253IPWR Pin Configurations section (Page 6) and Device Comparison Table (Page 5).
What is the channel-to-channel isolation performance of the ADS7253IPWR?
The ADS7253IPWR provides –80 dB ADC-to-ADC isolation (ISOXT) at fIN = 15 kHz and 10% full scale, measured between AINP_A/AINM_A and AINP_B/AINM_B inputs. This specification ensures minimal crosstalk during simultaneous sampling-critical for accurate differential measurements in three-phase systems-and is explicitly tested and guaranteed in the ADS7253IPWR Electrical Characteristics table (Section 7.7).
ADS7253IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 2
- Input Type:
- Pseudo-Differential, Single Ended
- 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-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7253IPWR FAQ
1.How can I place an order for ADS7253IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7253IPWR 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 ADS7253IPWR reliable?
The price and inventory of ADS7253IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7253IPWR is usually 5 days.
3.What payment methods are accepted for ADS7253IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7253IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7253IPWR?
ADS7253IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7253IPWR 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 ADS7253IPWR?
For technical support, including ADS7253IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7253IPWR requirements.
6.How does Aetrix verify that ADS7253IPWR is sourced from the original manufacturer or authorized distributors?
All ADS7253IPWR 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 ADS7253IPWR meets industry standards.
7.What is the process for return or replacement of ADS7253IPWR?
All ADS7253IPWR units undergo pre-shipment inspection (PSI). If there is an issue with ADS7253IPWR, 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 ADS7253IPWR part is unused and in its original packaging.
Return procedure for ADS7253IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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