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Texas Instruments ADS1230IPWG4
- Part No.:
- ADS1230IPWG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS1230IPWG4.pdf
- Description:
- IC ADC 20BIT SIGMA-DELTA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,330
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Product details
Overview
ADS1230IPWG4 from Texas Instruments is a precision 20-bit delta-sigma ADC with integrated PGA (gain = 64 or 128), internal oscillator, and sinc⁴ digital filter-designed specifically for bridge sensor front-ends in weigh scales, strain gauges, and pressure sensors. It delivers 40nV RMS noise at 10SPS (G=128), 18-bit noise-free resolution, and simultaneous 50Hz/60Hz rejection.
For engineers reviewing the ADS1230IPWG4 datasheet, ADS1230IPWG4 pinout, ADS1230IPWG4 application, or ADS1230IPWG4 equivalent, key selection criteria include its pin-driven control architecture (no registers), two-wire serial interface, ratiometric reference support up to 5V, and TSSOP-16 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The ADS1230IPWG4 employs a 3rd-order delta-sigma modulator and 4th-order digital filter, achieving 20-bit effective resolution with no missing codes. Its chopper-stabilized PGA provides low drift (±10 nV/°C offset drift) and EMI filtering (19.6 MHz cutoff), while the internal oscillator enables 10SPS or 80SPS data rates without external clocking.
Control is fully pin-driven: SPEED selects data rate (10SPS/80SPS), GAIN sets PGA gain (64/128), PDWN enables full power-down, and SCLK initiates offset calibration or standby mode. The DRDY/DOUT pin serves dual functions-data-ready indicator and MSB-first serial output-with built-in settling logic requiring four conversion cycles after input transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 20-bit effective, no missing codes-guarantees monotonicity across full-scale range |
| Data Rates | 10SPS (with simultaneous 50/60Hz rejection) or 80SPS-selected via SPEED pin, no firmware required |
| RMS Noise | 40nV at 10SPS (G=128)-enables ±19.5mV full-scale differential input with high signal integrity |
| PGA Gain | 64 or 128-configurable via GAIN pin, supports ±39mV or ±19.5mV input ranges respectively |
| Reference Input | External ratiometric reference up to 5V (REFP–REFN)-allows direct bridge excitation and measurement |
| Supply Range | 2.7V to 5.3V for both AVDD and DVDD-supports single-supply operation with rail-to-rail flexibility |
| Operating Temp | –40°C to +85°C-validated for industrial weigh scale and process control environments |
Pinout & Package
TSSOP-16 package (PW suffix), 4.4mm × 5.0mm body, 0.65mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVDD | Digital power supply | 2.7V–5.3V digital rail; powers SCLK, PDWN, SPEED, GAIN logic and serial interface |
| DGND | Digital ground | Reference for all digital I/O; must be separated from AGND per layout best practices |
| CLKIN | External clock input | Tie low to enable internal oscillator; accepts 0.2–6MHz external clock for precise timing control |
| GAIN | PGA gain select | Logic-low = 64, logic-high = 128-directly configures input sensitivity without register writes |
| CAP (pins 5,6) | PGA bypass capacitor terminals | Connect 0.1μF capacitor between pins to form 720Hz anti-aliasing filter with internal 2kΩ resistor |
| AINP / AINN | Differential analog inputs | Accept ±39mV (G=64) or ±19.5mV (G=128); internally protected by ESD diodes to rails |
| REFP / REFN | Reference voltage inputs | VREF = REFP – REFN; supports up to 5V ratiometric reference; high-impedance buffered inputs |
| AGND | Analog ground | Star-ground reference for analog circuitry; must be isolated from DGND except at single point |
| AVDD | Analog power supply | 2.7V–5.3V analog rail; powers PGA, modulator, and reference buffer independently of DVDD |
| SPEED | Data rate select | Logic-low = 10SPS (50/60Hz rejection), logic-high = 80SPS-determines filter settling and noise performance |
| PDWN | Power-down control | Hold low to shut down entire converter; resets ADC and forces DRDY/DOUT high on exit |
| SCLK | Serial clock input | Rising-edge triggered; initiates data read, offset calibration (26th edge), or standby entry (hold high) |
| DRDY/DOUT | Combined status/data pin | Active-low data-ready flag; shifts 20-bit two's complement data MSB-first on subsequent SCLK edges |
Key Features
| Feature | Design Value |
|---|---|
| Pin-driven configuration | Zero-register architecture eliminates firmware dependencies-SPEED, GAIN, PDWN directly control core functions |
| On-demand offset calibration | Initiated via SCLK sequence (26th edge); completes in 101ms (801ms) at 80SPS (10SPS), eliminating thermal drift accumulation |
| Simultaneous 50Hz/60Hz rejection | Guaranteed at 10SPS via sinc⁴ filter nulls-no external notch filters or software compensation needed |
| Integrated PGA with EMI filtering | Chopper-stabilized amplifier with 19.6MHz input filter reduces RF interference and improves long-term stability |
| Two-wire serial interface | DRDY/DOUT + SCLK only-minimizes isolation barriers and simplifies PCB routing for noisy industrial environments |
Applications
| Industrial Weigh Scales | Strain Gauge Monitoring |
|---|---|
Use Scenario: High-accuracy platform scales measuring loads from 1g to 100kg in factory floor environments with AC line noise. IC Role / Device Role / Timing Role: Primary ADC front-end converting mV-level Wheatstone bridge outputs into calibrated digital weight values. Use Value: 40nV RMS noise at 10SPS and simultaneous 50/60Hz rejection ensure stable readings without software averaging or external filtering. | Use Scenario: Structural health monitoring of bridges or machinery using bonded foil strain gauges under variable temperature and vibration. IC Role / Device Role / Timing Role: Precision bridge signal conditioner with programmable gain and ratiometric reference for temperature-compensated measurements. Use Value: ±10 nV/°C offset drift and 18-bit noise-free resolution maintain accuracy across –40°C to +85°C without recalibration. |
| Pressure Sensor Transmitters | Industrial Process Control |
Use Scenario: 4–20mA loop-powered pressure transmitters for HVAC or hydraulic systems requiring millivolt-level bridge excitation and digitization. IC Role / Device Role / Timing Role: Complete analog front-end providing excitation, amplification, filtering, and 20-bit digitization in a single IC. Use Value: Internal oscillator eliminates crystal BOM cost; 2.7V–5.3V supply range supports wide-input DC-DC converters in loop-powered designs. | Use Scenario: PLC analog input modules acquiring sensor data from multiple load cells, pressure sensors, and torque transducers in manufacturing lines. IC Role / Device Role / Timing Role: Pin-configurable ADC enabling standardized hardware design across diverse sensor types via GAIN/SPEED pin strapping. Use Value: TSSOP-16 footprint and pin-driven control reduce layout complexity and firmware variation across channel configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision bridge-sensor ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1232IPW | 24-bit resolution, integrated 2-channel MUX, same PGA/gain options and TSSOP-16 package | Supports multiplexed multi-sensor systems; higher resolution but larger code size and longer conversion time | Select when multi-channel scanning or >20-bit ENOB is required; retains identical pinout and control logic |
| HX711 SOP-16 | 24-bit sigma-delta ADC with built-in 128× PGA, but no internal oscillator or 50/60Hz rejection; requires external clock | Cost-optimized for consumer-grade scales; lacks industrial temp range and ratiometric reference flexibility | Select for low-cost, non-critical applications where external clock and simplified calibration are acceptable |
Compared with ADS1232IPW and HX711, the ADS1230IPWG4 uniquely balances 20-bit precision, pin-driven simplicity, and guaranteed 50/60Hz rejection in a minimal-footprint TSSOP-16-making it optimal for single-sensor industrial weighing and process control where reliability and ease of integration outweigh raw bit count.
Availability
ADS1230IPWG4 is available at Aetrix Electronics and suitable for industrial weigh scales, strain gauge instrumentation, pressure sensor transmitters, and PLC analog input modules requiring stable component supply and long-term lifecycle support.
Supply support for ADS1230IPWG4 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 acquisition and sensor interface solutions.
The ADS1230IPWG4 belongs to TI's precision delta-sigma ADC product line, engineered specifically for high-stability bridge sensor measurement in industrial and weighing applications where noise, drift, and line-frequency interference must be minimized without firmware overhead.
FAQ
What is the primary function of the ADS1230IPWG4 in a bridge sensor system?
The ADS1230IPWG4 serves as a complete analog front-end for bridge sensors, integrating a low-noise PGA (gain = 64 or 128), 20-bit delta-sigma ADC, internal oscillator, and sinc⁴ digital filter. In systems like weigh scales or pressure transmitters, the ADS1230IPWG4 directly digitizes mV-level differential outputs from Wheatstone bridges with simultaneous 50Hz/60Hz rejection at 10SPS-eliminating need for external amplifiers, clocks, or notch filters.
How does the ADS1230IPWG4 achieve simultaneous 50Hz and 60Hz line-frequency rejection?
The ADS1230IPWG4 achieves simultaneous 50Hz and 60Hz rejection through its fixed sinc⁴ digital filter architecture when operating at 10SPS. At this data rate, the filter's nulls align precisely at integer multiples of 10Hz, inherently rejecting both 50Hz and 60Hz interference without adjustable parameters or external components. This behavior is guaranteed in the ADS1230IPWG4 datasheet and requires no configuration beyond setting SPEED = low.
Can the ADS1230IPWG4 operate without an external crystal or clock source?
Yes, the ADS1230IPWG4 can operate without an external clock source. Its internal oscillator provides precise timing for both 10SPS and 80SPS data rates-activated automatically when CLKIN is tied low. This eliminates BOM cost and board space for crystals, while maintaining ±3% frequency stability over temperature, sufficient for guaranteed 50/60Hz rejection at 10SPS. External clocks (0.2–6MHz) are optional for tighter timing control.
What is the role of the CAP pins (5 and 6) on the ADS1230IPWG4?
The CAP pins (5 and 6) on the ADS1230IPWG4 connect to an external 0.1μF capacitor that forms a 720Hz low-pass filter with the device's internal 2kΩ resistor. This filter bandlimits the signal path before the delta-sigma modulator, preventing aliasing, attenuating high-frequency noise, and reducing chopping residue from the PGA to improve temperature drift performance. Ceramic or tantalum capacitors are acceptable for general use; poly capacitors are recommended for high-linearity applications.
How does offset calibration work on the ADS1230IPWG4, and when should it be performed?
Offset calibration on the ADS1230IPWG4 is initiated by applying the 26th SCLK rising edge after retrieving 20 bits of data. This triggers an internal procedure that disconnects the analog inputs and applies a known reference to null inherent offset errors. Calibration completes in 101ms (80SPS) or 801ms (10SPS), after which the first conversion is fully settled. It should be performed periodically in high-precision applications or after significant temperature changes-no host processor intervention is required beyond the SCLK sequence.
ADS1230IPWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 20
- Sampling Rate (Per Second):
- 80
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- PGA-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.3V
- Voltage - Supply, Digital:
- 2.7V ~ 5.3V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1230IPWG4 FAQ
1.How can I place an order for ADS1230IPWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1230IPWG4 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 ADS1230IPWG4 reliable?
The price and inventory of ADS1230IPWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1230IPWG4 is usually 5 days.
3.What payment methods are accepted for ADS1230IPWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1230IPWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1230IPWG4?
ADS1230IPWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1230IPWG4 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 ADS1230IPWG4?
For technical support, including ADS1230IPWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1230IPWG4 requirements.
6.How does Aetrix verify that ADS1230IPWG4 is sourced from the original manufacturer or authorized distributors?
All ADS1230IPWG4 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 ADS1230IPWG4 meets industry standards.
7.What is the process for return or replacement of ADS1230IPWG4?
All ADS1230IPWG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1230IPWG4, 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 ADS1230IPWG4 part is unused and in its original packaging.
Return procedure for ADS1230IPWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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