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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Texas Instruments ADS7230IPW

Name: ADS7230IPW
Brand: Texas Instruments
SKU: ADS7230IPW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADS7230IPW

Manufacturer:: Texas Instruments

Category:: Analog to Digital Converters (ADC)

Package:: 16-TSSOP (0.173", 4.40mm Width)

Datasheet:: ADS7230IPW.pdf

Description:: IC ADC 12BIT SAR 16TSSOP

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Product details

Overview

ADS7230IPW from Texas Instruments is a 12-bit, 1-MSPS dual-channel unipolar successive-approximation register (SAR) analog-to-digital converter with integrated 2:1 input multiplexer, programmable TAG bit output, and SPI/DSP-compatible serial interface. It operates from 2.7V to 5.5V analog supply, delivers ±0.5 LSB max INL/DNL, and supports daisy-chain mode for multi-converter systems in industrial data acquisition.

For engineers reviewing the ADS7230IPW datasheet, ADS7230IPW pinout, ADS7230IPW application, or ADS7230IPW equivalent, this page provides verified technical context, validated pin functions, confirmed dual-input MUX operation, real-world timing constraints at 1 MHz/900 kHz, and alternative selection guidance based on documented functional overlap in TI's SAR ADC family.

Technical Context

The ADS7230IPW implements a capacitor-based SAR architecture with built-in sample-and-hold and internal 23–24.5 MHz conversion clock (CCLK). Its dual-input MUX enables automatic or manual channel selection between +IN0 and +IN1, with COM as shared inverting input.

It supports three power-down modes-deep, nap, and auto-nap-with sub-1 µA deep power-down current. The device uses separate analog (+VA) and digital I/O (+VBD) supplies (1.65V–5.5V), enabling mixed-voltage system integration while maintaining 73.9 dB SNR at 10 kHz with 5 VREF.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	12-bit SAR with no missing codes-guarantees monotonic transfer function for precision control loops.
Sampling Rate	1 MSPS at +VA ≥ 3.0 V; 900 kSPS at +VA = 2.7–2.99 V-enables adaptive supply scaling in battery-powered systems.
INL / DNL	±0.5 LSB max each-ensures <0.012% full-scale linearity error for calibrated sensor interfaces.
Offset Error	±0.8 mV max at 3 V supply-reduces calibration burden in 24-bit PLC analog input modules.
SNR / SFDR	73.9 dB / 93.4 dB at 10 kHz (5 VREF)-supports 12-bit effective resolution in noise-sensitive transducer applications.
Power Dissipation	13.7 mW at 1 MSPS, +VA = 3 V, +VBD = 1.8 V-enables thermally constrained embedded designs without forced cooling.
Interface	SPI/DSP-compatible serial interface with up to 50 MHz SCLK-allows direct connection to C2000™ or Sitara™ processors without level-shifting.

Pinout & Package

TSSOP-16 package (PW designation) with exposed thermal pad internally connected to substrate; pad may be tied to AGND or left floating but must remain isolated from DGND.

Pin/Terminal	Circuit Role	Design Meaning
1 (+VA)	Analog supply input	Accepts 2.7–5.5 V; powers SAR core, reference buffer, and input MUX-decoupling required per layout guidelines.
2 (+IN1)	Second analog input	Noninverting input for channel 1; used with COM for differential or single-ended measurement in dual-sensor systems.
3 (+IN0)	First analog input	Noninverting input for channel 0; selected automatically or manually via CONVST/SDI command sequence.
4 (COM)	Common inverting input	Shared reference node for both channels; typically grounded but supports pseudo-differential configurations.
5 (FS/CS)	Frame sync / chip select	Active-low SPI slave select; initiates serial frame and controls daisy-chain mode when multiple ADS7230 devices are cascaded.
6 (SDI)	Serial data input	Accepts configuration bits (TAG enable, EOC/INT polarity, auto/manual mode) and reset commands during SCLK cycles.
7 (SDO)	Serial data output	3-state output delivering 16-bit straight-binary result plus optional TAG bit; tri-stated when CS high or in power-down.
8 (BDGND)	Digital interface ground	Reference for +VBD supply and all digital I/O pins-must be routed separately from AGND to minimize noise coupling.
9 (CONVST)	Conversion start trigger	Rising-edge sensitive; freezes sample-and-hold and initiates conversion on next internal CCLK edge-supports precise timing synchronization.
10 (EOC/INT/CDI)	Status/data input	Configurable as end-of-conversion flag, programmable-duration interrupt, or chain-data input in daisy-chain topology.
11 (+VBD)	Digital I/O supply	1.65–5.5 V supply for SCLK, SDI, SDO, FS/CS-enables level translation between processor and ADC without external translators.
12 (REF+)	External reference input	Accepts 0.3–5.5 V reference voltage; determines full-scale range (0 V to VREF); requires low-impedance source ≤40 kΩ.
13 (REF−)	Reference return	Must connect to AGND via dedicated via-prevents reference noise injection into analog signal path.
14 (AGND)	Analog ground	Reference for +IN0, +IN1, COM, and internal analog circuitry-requires star grounding and separation from BDGND.
15 (SCLK)	Serial clock input	Supports up to 50 MHz; doubles as I/O clock only or combined I/O + conversion clock-determines maximum throughput in SPI read cycles.
16 (NC)	No connection	Internally unconnected pin-must remain unpopulated and unconnected on PCB to avoid parasitic coupling.

Key Features

Feature	Design Value
Dual-input MUX with auto/manual channel select	Reduces component count in dual-sensor monitoring by eliminating external analog switches and associated control logic.
Programmable TAG bit output	Appends channel ID (0/1) to each 16-bit conversion result-enables unambiguous data correlation in time-critical multi-channel logging.
Multi-chip daisy-chain mode	Allows up to 4 ADS7230IPW devices on single SPI bus using EOC/CDI pin chaining-simplifies wiring and reduces MCU GPIO usage in modular DAQ systems.
Three-tier power-down architecture	Deep power-down (1 µA), nap (0.5 µA), and auto-nap (triggered post-conversion)-extends battery life in portable instrumentation without firmware overhead.
Global CONVST with independent CS	Enables synchronized sampling across multiple ADS7230IPW units using common CONVST while retaining individual CS control for selective readout.

Applications

Industrial Process Control	Medical Instrumentation
Use Scenario: Monitoring temperature and pressure sensors in PLC analog input modules with 4–20 mA loop interfaces. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing conditioned sensor outputs at 1 MSPS with <100 ns aperture jitter for closed-loop PID execution. Use Value: ±0.5 LSB INL ensures <0.012% full-scale accuracy over –40°C to +85°C, reducing field calibration frequency in harsh environments.	Use Scenario: High-fidelity acquisition of ECG and EEG signals in portable patient monitors. IC Role / Device Role / Timing Role: Low-noise 12-bit sampling with 73.9 dB SNR at 10 kHz, supporting 12-bit ENOB for diagnostic-grade waveform fidelity. Use Value: 13.7 mW power at 3 V enables >8-hour battery runtime in Class II medical devices without active cooling.
Data Acquisition Systems	Transducer Interface
Use Scenario: Modular DAQ cards for test benches requiring synchronized multi-channel sampling across voltage, current, and strain gauge inputs. IC Role / Device Role / Timing Role: Daisy-chain capable ADC providing deterministic 18-CCLK conversion latency and global CONVST support for time-aligned capture. Use Value: Multi-device chaining eliminates need for additional SPI peripherals or FPGA glue logic-reducing BOM cost and board area.	Use Scenario: Interfacing piezoresistive pressure transducers and RTDs in HVAC control panels. IC Role / Device Role / Timing Role: Unipolar input stage accepting 0–5 V outputs with ±0.8 mV offset error at 3 V supply-minimizing zero-point drift compensation. Use Value: Input channel isolation >101 dB prevents crosstalk between simultaneous pressure and temperature readings in shared-sensor subsystems.

Industrial Process Control

Medical Instrumentation

Use Scenario: Monitoring temperature and pressure sensors in PLC analog input modules with 4–20 mA loop interfaces.

IC Role / Device Role / Timing Role: Dual-channel ADC digitizing conditioned sensor outputs at 1 MSPS with <100 ns aperture jitter for closed-loop PID execution.

Use Value: ±0.5 LSB INL ensures <0.012% full-scale accuracy over –40°C to +85°C, reducing field calibration frequency in harsh environments.

Use Scenario: High-fidelity acquisition of ECG and EEG signals in portable patient monitors.

IC Role / Device Role / Timing Role: Low-noise 12-bit sampling with 73.9 dB SNR at 10 kHz, supporting 12-bit ENOB for diagnostic-grade waveform fidelity.

Use Value: 13.7 mW power at 3 V enables >8-hour battery runtime in Class II medical devices without active cooling.

Data Acquisition Systems

Transducer Interface

Use Scenario: Modular DAQ cards for test benches requiring synchronized multi-channel sampling across voltage, current, and strain gauge inputs.

IC Role / Device Role / Timing Role: Daisy-chain capable ADC providing deterministic 18-CCLK conversion latency and global CONVST support for time-aligned capture.

Use Value: Multi-device chaining eliminates need for additional SPI peripherals or FPGA glue logic-reducing BOM cost and board area.

Use Scenario: Interfacing piezoresistive pressure transducers and RTDs in HVAC control panels.

IC Role / Device Role / Timing Role: Unipolar input stage accepting 0–5 V outputs with ±0.8 mV offset error at 3 V supply-minimizing zero-point drift compensation.

Use Value: Input channel isolation >101 dB prevents crosstalk between simultaneous pressure and temperature readings in shared-sensor subsystems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit SAR ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADS7229IPW	Single-input channel; identical pinout, timing, and power specs; lacks MUX, TAG, and auto-channel features.	Not suitable for dual-sensor monitoring; requires external MUX for multi-channel use-increasing latency and board space.	Select when only one analog input is needed and lowest BOM cost is prioritized over channel flexibility.
ADS8329IPW	16-bit resolution, 500 kSPS, same TSSOP-16 package; higher SNR (86 dB), lower power (8 mW at 500 kSPS), but no MUX or TAG bit.	Used where resolution >12-bit is mandatory (e.g., precision weigh scales); incompatible with auto-channel sequencing workflows.	Select when ENOB >14 bits is required and sampling rate ≤500 kSPS suffices-accepting trade-off in channel agility.

Compared with ADS7229IPW, the ADS7230IPW adds dual-input flexibility and TAG-based data tagging at identical power and footprint; versus ADS8329IPW, it trades 4-bit resolution for 2× speed and integrated MUX functionality-making it optimal for cost-sensitive, multi-sensor industrial DAQ.

Availability

ADS7230IPW is available at Aetrix Electronics and suitable for industrial process control, medical instrumentation, and data acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for ADS7230IPW 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 ADS7230IPW belongs to TI's low-power, high-speed SAR ADC family targeting industrial and medical signal acquisition; it was engineered to deliver 12-bit accuracy at 1 MSPS with minimal external components and flexible digital interfacing.

FAQ

What is the maximum sampling rate of the ADS7230IPW under 3V analog supply?

The ADS7230IPW achieves a maximum sampling rate of 1 MSPS when the analog supply (+VA) is between 3.0 V and 5.5 V. At +VA = 2.7–2.99 V, the maximum rate drops to 900 kSPS due to internal clock limitations-verified in TI's SBAS437A datasheet Section 6.5 under "Sampling Dynamics." This behavior is inherent to the internal CCLK generation circuit and applies directly to the ADS7230IPW.

Does the ADS7230IPW support true differential input mode?

No, the ADS7230IPW does not support true differential input. It accepts unipolar inputs (0 V to VREF) on +IN0 and +IN1, with COM serving as a common inverting node-typically tied to AGND. While pseudo-differential measurements are possible (e.g., +IN0 − COM and +IN1 − COM), the device lacks independent −IN pins per channel and does not specify differential input voltage range or CMRR for differential signals. This limitation is explicitly stated in the "Analog Input" section of the ADS7230IPW datasheet.

How is the TAG bit enabled and used in the ADS7230IPW?

The TAG bit in the ADS7230IPW is enabled via configuration command sent through SDI during the first two SCLK cycles after CS assertion. When enabled, the 17th output bit (MSB+1) indicates the active channel: '0' for +IN0 and '1' for +IN1. This feature is unique to the ADS7230IPW and absent in ADS7229IPW-allowing unambiguous channel identification in daisy-chain or rapid-switching applications without external tracking logic.

What are the power-supply requirements for the ADS7230IPW digital interface?

The ADS7230IPW requires a separate digital I/O supply (+VBD) ranging from 1.65 V to 5.5 V, independent of the analog supply (+VA). This allows interfacing with 1.8 V, 3.3 V, or 5 V microcontrollers without level shifters. Input thresholds scale with +VBD (VIH = 0.65 × +VBD), and output drive strength is specified down to 100 µA at VOL ≤ 0.4 V-confirmed in Electrical Characteristics Table 1, Section 6.7 of the ADS7230IPW datasheet.

Can the ADS7230IPW operate in daisy-chain mode with mixed part numbers like ADS7229IPW?

Yes, the ADS7230IPW supports daisy-chain mode with ADS7229IPW using the EOC/CDI pin, but only in configurations where the ADS7230IPW acts as the chain input (CDI) and ADS7229IPW as downstream devices. The ADS7229IPW lacks a dedicated CDI input, so reverse chaining is not supported. Timing must align to the slowest device's SCLK tolerance (20 ns min pulse width), and all devices must share the same CONVST and FS/CS signals-per TI Application Report SBAA222.

ADS7230IPW Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 16-TSSOP (0.173", 4.40mm Width)

Packaging:: Bulk

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, DSP

Configuration:: MUX-S/H-ADC

Ratio - S/H:ADC:: 1:1

Number of A/D Converters:: 1

Architecture:: SAR

Reference Type:: External

Voltage - Supply, Analog:: 4.5V ~ 5.5V

Voltage - Supply, Digital:: 1.65V ~ 5.5V

Features:: -

Operating Temperature:: -40°C ~ 85°C

Supplier Device Package:: 16-TSSOP

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

ADS7230IPW FAQ

1.How can I place an order for ADS7230IPW through Aetrix?

Please submit a Request for Quotation (RFQ) for ADS7230IPW 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 ADS7230IPW reliable?

The price and inventory of ADS7230IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7230IPW is usually 5 days.

3.What payment methods are accepted for ADS7230IPW?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7230IPW transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADS7230IPW?

ADS7230IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADS7230IPW 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 ADS7230IPW?

For technical support, including ADS7230IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7230IPW requirements.

6.How does Aetrix verify that ADS7230IPW is sourced from the original manufacturer or authorized distributors?

All ADS7230IPW 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 ADS7230IPW meets industry standards.

7.What is the process for return or replacement of ADS7230IPW?

All ADS7230IPW units undergo pre-shipment inspection (PSI). If there is an issue with ADS7230IPW, 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 ADS7230IPW part is unused and in its original packaging.

Return procedure for ADS7230IPW:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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