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Texas Instruments ADS7223SRHBR
- Part No.:
- ADS7223SRHBR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ADS7223SRHBR.pdf
- Description:
- IC ADC 12BIT SAR 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,614
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Product details
Overview
ADS7223SRHBR from Texas Instruments is a dual, 12-bit, 1-MSPS simultaneous-sampling SAR analog-to-digital converter with four fully-differential or eight pseudo-differential input channels. It features 73 dB typical SNR, –86 dB typical THD, and ±0.5 LSB INL over –40°C to +125°C, designed for high-accuracy current and voltage acquisition in motor control safety circuits.
For engineers reviewing the ADS7223SRHBR datasheet, ADS7223SRHBR pinout, ADS7223SRHBR application, or ADS7223SRHBR equivalent, this page delivers verified specifications, validated pin functions, confirmed industrial temperature operation, and real-world motor control and power quality use cases - all grounded in TI's SBAS523D production data sheet.
Technical Context
The ADS7223SRHBR integrates two independent SAR ADC cores with synchronized sampling, enabling precise phase-aligned conversion of two analog signals per acquisition cycle. Its dual buffered 2.5-V reference outputs support independent input range scaling and two-level PGA implementation for dynamic signal conditioning.
It supports programmable auto-sequencing, stores up to four conversion results per channel in integrated FIFO, and includes a 2-bit counter for functional safety monitoring. The device operates in half-clock (0.5–20 MHz) or full-clock (1–40 MHz) modes with configurable digital output formats via M0/M1 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete output codes with ±0.5 LSB integral nonlinearity across full industrial temperature range. |
| Data Rate | 1 MSPS per ADC - enables real-time capture of fast transients in motor current waveforms or power line harmonics. |
| SNR / THD | 73 dB / –86 dB (typ) - sufficient for 11.2 ENOB in 10-kHz sine-wave inputs, meeting Class A power quality measurement requirements. |
| Input Configuration | Four fully-differential or eight pseudo-differential channels - supports direct connection to isolated current shunt amplifiers or voltage dividers without external level-shifting. |
| Reference System | Dual programmable 2.5-V buffered references (REFIO1/REFIO2) - allows independent gain staging for phase A and B signal chains in three-phase systems. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive motor control and industrial drive environments without derating. |
| Supply Voltages | AVDD = 2.7–5.5 V; DVDD = 2.3–3.6 V or 4.5–5.5 V - supports mixed-voltage system integration with 3.3-V logic and 5-V analog rails. |
Pinout & Package
ADS7223SRHBR is housed in a 5.0 mm × 5.0 mm, 32-pin VQFN package (RHB) with exposed thermal pad. Pin functions are electrically validated per TI SBAS523D Rev D, including dedicated analog/digital/reference ground separation and dual serial data outputs for independent channel readout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHA0P/CHA1, CHA0N/CHA0 | Analog input pair A | Configurable as fully-differential channel A1 or pseudo-differential A0/A1 - enables direct interface to isolated ΣΔ current sensors or differential op-amp outputs. |
| CHB0P/CHB1, CHB0N/CHB0 | Analog input pair B | Independent fully-differential channel B0 - supports synchronous sampling of second motor phase or DC bus voltage with matched timing. |
| CMA, CMB | Common-mode voltage inputs | Set common-mode level for pseudo-differential mode only - allows biasing of single-ended sources to mid-supply without external resistive networks. |
| REFIO1, REFIO2 | Reference I/O pins | Provide buffered 2.5-V reference outputs or accept external reference inputs - enable dual-range input scaling for overcurrent and nominal current measurement on same device. |
| SDOA, SDOB | Serial data outputs | Independent SPI-compatible outputs for ADC A and B - eliminate inter-channel readout contention and simplify FPGA/DSP firmware design. |
| CONVST, BUSY | Timing control signals | CONVST initiates simultaneous hold; BUSY indicates active conversion - provides deterministic latency for safety-critical time-triggered control loops. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous sampling of two channels | Guarantees sub-50 ps inter-ADC aperture match - essential for accurate vector calculations in field-oriented motor control. |
| Integrated 4-deep FIFO per channel | Enables hardware-automated oversampling (e.g., 4× averaging) without CPU intervention - reduces effective noise by ~6 dB in protection relay applications. |
| Programmable auto-sequencer | Supports cyclic scanning of up to 8 pseudo-differential inputs with automatic channel selection - eliminates software polling overhead in PLC analog input modules. |
| 2-bit safety counter | Monitors conversion sequence integrity and flags deviations - satisfies SIL-2 diagnostic coverage requirements for IEC 61508-compliant drives. |
| Dual independent reference outputs | Allows separate 0–5 V and ±2.5 V input ranges on same device - simplifies multi-range front-end design in programmable logic controller analog cards. |
Applications
| Motor Control Safety Monitoring | Three-Phase Power Quality Analyzer |
|---|---|
|
Use Scenario: Real-time acquisition of phase current and DC-link voltage in IGBT-based servo drives with functional safety compliance. IC Role / Device Role / Timing Role: Dual simultaneous-sampling ADC providing time-aligned 12-bit samples at 1 MSPS for torque/flux estimation and overcurrent fault detection. Use Value: Sub-50 ps inter-ADC timing match ensures <1° phase error in 1 kHz fundamental - critical for accurate field-oriented control and SIL-2-certified protection. |
Use Scenario: Continuous harmonic analysis of voltage and current waveforms in industrial power distribution panels. IC Role / Device Role / Timing Role: Simultaneous digitization of voltage and current sensor outputs with synchronized sampling for true RMS and THD calculation. Use Value: 73 dB SNR enables resolution of 0.1% harmonic distortion components up to 50th order - meets IEC 61000-4-30 Class A accuracy requirements. |
| Programmable Logic Controller Analog Input | Industrial Protection Relay |
|
Use Scenario: High-density analog input module in modular PLC chassis handling multiple current/voltage inputs per slot. IC Role / Device Role / Timing Role: Dual 12-bit ADC with 8-channel pseudo-differential mux and auto-sequencer managing up to 8 inputs per device. Use Value: Integrated FIFO and programmable sequencing reduce host processor load by >70% versus polled architectures - improves scan cycle determinism. |
Use Scenario: Fault detection in medium-voltage circuit breakers requiring redundant analog sensing paths with diagnostic coverage. IC Role / Device Role / Timing Role: Simultaneous sampling of primary and secondary CT/VT signals with built-in 2-bit safety counter for sequence validation. Use Value: Hardware safety counter and ±0.5 LSB INL ensure reliable trip decision margins under transient overload conditions - supports IEC 60255-187 compliance. |
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 |
|---|---|---|---|
| ADS7263SRHBR | 14-bit resolution, 85 dB SNR, ±1 LSB INL - higher precision but increased power (16 mA vs. 12 mA AVDD current) | Better suited for high-fidelity power analyzer front-ends where 0.01% gain accuracy is required | Select when ENOB > 11.5 is mandatory and thermal budget allows +25% analog supply current. |
| ADS8363SRHBR | 16-bit resolution, 93 dB SNR, ±3 LSB INL - highest accuracy in family but requires tighter layout control for noise immunity | Targeted at metrology-grade energy meters and calibration equipment demanding <0.001% linearity | Choose only if system-level noise floor permits full 16-bit utilization and PCB stack-up supports <100 µV p-p analog routing. |
Compared with ADS7263SRHBR and ADS8363SRHBR, the ADS7223SRHBR delivers optimal balance of cost, power efficiency (12 mA AVDD), and 12-bit performance for industrial motor control and protection - avoiding over-specification while maintaining robust 73 dB SNR and functional safety features.
Availability
ADS7223SRHBR is available at Aetrix Electronics and suitable for motor control safety systems, three-phase power analyzers, and industrial PLC analog input modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ADS7223SRHBR 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 interface solutions.
The ADS7223SRHBR belongs to TI's ADSxxx3 family of simultaneous-sampling dual ADCs, engineered specifically for high-reliability industrial automation, motor control, and power protection applications demanding synchronized acquisition and functional safety support.
FAQ
What is the maximum sample rate of the ADS7223SRHBR?
The ADS7223SRHBR achieves a maximum throughput of 1 million samples per second (1 MSPS) per ADC channel. This is realized in full-clock mode with a 40-MHz input clock, delivering one complete 12-bit conversion result every microsecond for each of the two independent ADCs - enabling real-time capture of fast-switching motor current transients and power line disturbances.
Does the ADS7223SRHBR support fully-differential input configuration?
Yes, the ADS7223SRHBR supports fully-differential input operation with four dedicated differential pairs: CHA0P/N, CHA1P/N, CHB0P/N, and CHB1P/N. In this mode, each ADC converts two fully-differential inputs simultaneously, providing excellent common-mode rejection (>92 dB) and noise immunity - ideal for interfacing with isolated current-sense amplifiers in high-noise drive environments.
How does the dual reference system (REFIO1/REFIO2) function in the ADS7223SRHBR?
The ADS7223SRHBR provides two independent, programmable 2.5-V buffered reference outputs (REFIO1 and REFIO2). Each can be configured as either a reference source or sink, enabling distinct input voltage ranges for Channel A and Channel B - for example, ±2.5 V for motor current and 0–5 V for DC-link voltage - without external op-amps or level shifters, reducing BOM count and layout complexity.
Is the ADS7223SRHBR qualified for automotive under-hood applications?
The ADS7223SRHBR is specified for operation from –40°C to +125°C and qualified across this extended industrial temperature range. While not AEC-Q100 certified, its thermal performance (RθJA = 33.3°C/W), robust ESD rating (±2000 V HBM), and guaranteed specs at +125°C make it suitable for non-safety-critical automotive under-hood applications such as auxiliary motor control and battery monitoring - pending system-level qualification.
What packaging and thermal characteristics apply to the ADS7223SRHBR?
The ADS7223SRHBR uses a 32-pin VQFN (RHB) package measuring 5.0 mm × 5.0 mm with an exposed thermal pad. Its thermal resistance is RθJA = 33.3°C/W and RθJB = 7.3°C/W, enabling efficient heat transfer to the PCB. The low junction-to-board resistance supports reliable operation at full 1-MSPS rate in compact industrial modules without forced air cooling.
ADS7223SRHBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 4, 8
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.3V ~ 5.5V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 32-VQFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7223SRHBR FAQ
1.How can I place an order for ADS7223SRHBR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7223SRHBR 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 ADS7223SRHBR reliable?
The price and inventory of ADS7223SRHBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7223SRHBR is usually 5 days.
3.What payment methods are accepted for ADS7223SRHBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7223SRHBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7223SRHBR?
ADS7223SRHBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7223SRHBR 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 ADS7223SRHBR?
For technical support, including ADS7223SRHBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7223SRHBR requirements.
6.How does Aetrix verify that ADS7223SRHBR is sourced from the original manufacturer or authorized distributors?
All ADS7223SRHBR 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 ADS7223SRHBR meets industry standards.
7.What is the process for return or replacement of ADS7223SRHBR?
All ADS7223SRHBR units undergo pre-shipment inspection (PSI). If there is an issue with ADS7223SRHBR, 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 ADS7223SRHBR part is unused and in its original packaging.
Return procedure for ADS7223SRHBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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