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Texas Instruments ADS1258MPHPTEP
- Part No.:
- ADS1258MPHPTEP
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-PowerTQFP
- Datasheet:
-
ADS1258MPHPTEP.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 48HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,039
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Product details
Overview
ADS1258MPHPTEP from Texas Instruments is a 16-channel, 24-bit delta-sigma analog-to-digital converter (ADC) with single-cycle settled data, fixed-channel scan rate up to 125 kSPS, auto-scan rate of 23.7 kSPS/channel, ±2.5 V bipolar or 5 V unipolar operation, and on-chip temperature/reference/supply monitoring. It serves high-precision multi-channel instrumentation in avionics and process control systems.
For engineers reviewing the ADS1258MPHPTEP datasheet, ADS1258MPHPTEP pinout, ADS1258MPHPTEP application, or ADS1258MPHPTEP equivalent, this page delivers verified electrical specs, QFP-48 package mapping, GPIO and MUXOUT signal routing details, and validated alternatives for defense-grade multi-channel data acquisition designs.
Technical Context
The ADS1258MPHPTEP integrates a fourth-order delta-sigma modulator followed by a fifth-order sinc digital filter optimized for low-noise performance at programmable data rates. Its 16:1 analog input multiplexer supports eight differential or 16 single-ended inputs with full-scale ranges of ±2.5 V or 5 V, and provides accessible differential MUX outputs (MUXOUTP/MUXOUTN) for external signal conditioning prior to ADC conversion.
Internal system monitoring includes real-time readback of die temperature, AVDD/AVSS/DVDD supply voltages, reference voltage, gain, and offset. Clocking is flexible: a 32.768-kHz crystal drives an on-chip PLL generating a 15.729-MHz system clock, or an external clock may be applied via CLKIO - with CLKSEL selecting between internal oscillator and external source modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes - guarantees monotonicity and full dynamic range utilization in precision measurement. |
| Data Rate (Fixed-Channel) | 125 kSPS - enables single-channel high-speed sampling without settling delay, suitable for real-time control loops. |
| Data Rate (Auto-Scan) | 23.7 kSPS per channel - completes full 16-channel scan in < 675 µs, ideal for synchronized multi-sensor acquisition. |
| INL Error | ±0.0003% FSR - ensures sub-ppm linearity critical for calibration-grade instrumentation and metrology. |
| Offset Drift | 0.02 µV/°C - minimizes thermal-induced baseline shift over –40°C to +105°C industrial operating range. |
| Power Dissipation | 42 mW typical during conversion - balances high-resolution performance with thermal management in dense PCB layouts. |
| Input Configuration | 16 single-ended or 8 differential inputs - supports flexible sensor interfacing including RTDs, strain gauges, and thermocouples. |
Pinout & Package
ADS1258MPHPTEP is packaged in a 48-pin QFP (Plastic Quad Flat Package) with exposed thermal pad, rated for –40°C to +105°C operation and compliant with defense/aerospace extended product lifecycle requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN15 | Analog Input | 16 single-ended or 8 differential channel inputs; support ±2.5 V bipolar or 5 V unipolar full-scale ranges. |
| AINCOM | Analog Reference | Common return for all single-ended inputs; must be tied to system analog ground or sensor common. |
| VREFP / VREFN | Reference Input | Differential reference pair (VREF = VREFP – VREFN); accepts 0.5 V to 4.096 V with 40 kΩ effective input impedance. |
| MUXOUTP / MUXOUTN | Analog Output | Differential multiplexer output; allows external filtering, amplification, or isolation before ADC input stage. |
| ADCINP / ADCINN | ADC Input | Differential input to delta-sigma modulator; accepts ±1.06 × VREF full-scale range with 65 kΩ input impedance. |
| GPIO0–GPIO7 | Digital I/O | Eight general-purpose pins configurable as inputs or outputs; usable for sensor enable, status signaling, or synchronization. |
| CLKSEL / CLKIO | Clock Control | CLKSEL selects crystal (low) or external clock (high); CLKIO serves as input or 15.729 MHz buffered output. |
| CS / SCLK / DIN / DOUT / DRDY | SPI Interface | Standard SPI-compatible serial interface with active-low chip select, data-ready flag, and 16-/24-/32-bit word support. |
Key Features
| Feature | Design Value |
|---|---|
| Open-Sensor Detection | Programmable current sources (1.5 µA or 24 µA) enable continuity verification and fault detection on resistive sensors. |
| On-Chip System Monitoring | Simultaneous readback of internal temperature, AVDD/AVSS/DVDD supplies, reference voltage, gain, and offset registers. |
| Flexible Clock Architecture | Integrated 32.768-kHz crystal oscillator with PLL generates 15.729-MHz clock; CLKIO pin doubles as output for daisy-chaining. |
| Low-Noise Performance | 2.8 µVRMS noise at 1.8 kSPS - achieves 112 dB SNR for high-fidelity signal capture in medical and test equipment. |
| Extended Temperature Range | Rated for –40°C to +105°C ambient operation with controlled baseline and traceable manufacturing for aerospace/defense use. |
Applications
| Avionics Sensor Hub | Industrial Process Controller |
|---|---|
Use Scenario: Multi-parameter flight data acquisition from accelerometers, pressure transducers, and temperature sensors across 16 channels. IC Role / Device Role / Timing Role: Primary high-resolution ADC performing synchronized auto-scan at 23.7 kSPS/channel with on-chip temperature compensation. Use Value: Eliminates external multiplexer timing control and reduces BOM count while maintaining <0.0003% INL across full temperature range. |
Use Scenario: Closed-loop control of chemical reactor parameters including pH, flow, level, and thermal gradients. IC Role / Device Role / Timing Role: Fixed-channel mode ADC sampling critical safety interlocks at 125 kSPS with single-cycle settling for fast response. Use Value: Enables deterministic latency under 8 µs per channel, supporting SIL-2 functional safety architectures without FPGA assistance. |
| Medical Diagnostic Instrument | Test & Measurement System |
Use Scenario: High-fidelity ECG/EEG front-end acquiring 16 biopotential channels with simultaneous reference monitoring. IC Role / Device Role / Timing Role: Delta-sigma ADC with MUXOUTP/MUXOUTN driving external instrumentation amplifiers and anti-alias filters. Use Value: 2.8 µVRMS noise at 1.8 kSPS and 0.02 µV/°C offset drift ensure diagnostic-grade signal integrity without recalibration. |
Use Scenario: Automated calibration station verifying sensor accuracy across temperature and voltage extremes. IC Role / Device Role / Timing Role: Precision reference ADC measuring its own internal VREF, temperature, and supply rails for self-validation. Use Value: On-chip reference/supply/temperature readback enables NIST-traceable calibration without external meters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution multi-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1259IPAPR | 24-bit, 16-channel, but fixed 10 kSPS max scan rate; no MUXOUT pins; QFN-64 package. | Lacks differential MUX output and GPIOs; suited for lower-speed, space-constrained embedded systems. | Select when absolute minimum board area is prioritized over signal conditioning flexibility and scan speed. |
| AD7768-1BCPZ | 24-bit, 1-channel sigma-delta ADC with 256 kSPS; integrated buffer; no multiplexer or GPIOs. | Requires external multiplexer for multi-channel use; higher power (100 mW); optimized for single-sensor high-bandwidth apps. | Choose when channel count is low and maximum throughput per channel (>100 kSPS) outweighs integration benefits. |
Compared with ADS1258MPHPTEP, ADS1259IPAPR trades scan speed and signal routing capability for smaller footprint, while AD7768-1BCPZ sacrifices channel integration and on-chip monitoring for raw per-channel bandwidth - making ADS1258MPHPTEP uniquely balanced for defense-grade multi-sensor hubs requiring speed, intelligence, and ruggedness.
Availability
ADS1258MPHPTEP is available at Aetrix Electronics and suitable for avionics sensor hubs, industrial process controllers, and medical diagnostic instruments requiring stable component supply with extended product lifecycle assurance.
Supply support for ADS1258MPHPTEP 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 heritage in precision data converters and aerospace-qualified components.
The ADS1258 product line was engineered for high-reliability, multi-channel precision data acquisition in defense, avionics, and industrial environments - emphasizing low drift, on-chip diagnostics, and extended temperature operation.
FAQ
What is the operating temperature range for ADS1258MPHPTEP?
The ADS1258MPHPTEP is rated for continuous operation from –40°C to +105°C ambient temperature. This industrial-grade specification aligns with its qualification for aerospace and defense applications, and is explicitly defined in the ordering information table for the MPHPTEP variant. The device maintains full performance compliance-including INL, offset drift, and noise-across this entire range.
Does ADS1258MPHPTEP support both unipolar and bipolar input configurations?
Yes, ADS1258MPHPTEP supports both configurations: unipolar operation with 0 V to 5 V full-scale range (AVSS = 0 V, AVDD = 5 V), and true bipolar operation with ±2.5 V full-scale range (AVSS = –2.5 V, AVDD = +2.5 V). The differential input accepts VIN = ADCINP – ADCINN against VREF = VREFP – VREFN, enabling seamless reconfiguration via power supply and reference wiring.
How many GPIOs does ADS1258MPHPTEP provide, and what are their capabilities?
ADS1258MPHPTEP provides eight general-purpose digital I/O pins (GPIO0–GPIO7), each configurable as input or output via register control. These pins support TTL/CMOS logic levels compatible with DVDD (2.7 V to 5.25 V), and can drive 2 mA loads. They are commonly used for sensor enable/disable control, status flagging, or synchronization with external logic in multi-board systems.
What clock sources are supported by ADS1258MPHPTEP?
ADS1258MPHPTEP supports two clock sources: an internal 32.768-kHz crystal oscillator (using XTAL1/XTAL2 pins and PLLCAP capacitor) generating a 15.729-MHz system clock, or an external clock applied directly to CLKIO. CLKSEL pin selects between them - low for crystal mode, high for external clock mode - enabling flexible timing architecture in mixed-signal systems.
Is ADS1258MPHPTEP pin-compatible with other variants like ADS1258MRTCTEP?
No, ADS1258MPHPTEP is not pin-compatible with ADS1258MRTCTEP. ADS1258MPHPTEP uses a 48-pin QFP package (PHP), while ADS1258MRTCTEP uses a 48-pin QFN package (RTC) with different thermal pad layout and pin assignments. Although both share identical functionality and register maps, PCB layout and thermal design must be independently validated for each package variant.
ADS1258MPHPTEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-PowerTQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 125k
- Number of Inputs:
- 8, 16
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Supplier Device Package:
- 48-HTQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1258MPHPTEP FAQ
1.How can I place an order for ADS1258MPHPTEP through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1258MPHPTEP 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 ADS1258MPHPTEP reliable?
The price and inventory of ADS1258MPHPTEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1258MPHPTEP is usually 5 days.
3.What payment methods are accepted for ADS1258MPHPTEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1258MPHPTEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1258MPHPTEP?
ADS1258MPHPTEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1258MPHPTEP 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 ADS1258MPHPTEP?
For technical support, including ADS1258MPHPTEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1258MPHPTEP requirements.
6.How does Aetrix verify that ADS1258MPHPTEP is sourced from the original manufacturer or authorized distributors?
All ADS1258MPHPTEP 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 ADS1258MPHPTEP meets industry standards.
7.What is the process for return or replacement of ADS1258MPHPTEP?
All ADS1258MPHPTEP units undergo pre-shipment inspection (PSI). If there is an issue with ADS1258MPHPTEP, 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 ADS1258MPHPTEP part is unused and in its original packaging.
Return procedure for ADS1258MPHPTEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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