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Texas Instruments ADS1260BQWRHMRQ1
- Part No.:
- ADS1260BQWRHMRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ADS1260BQWRHMRQ1.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,790
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Product details
Overview
ADS1260BQWRHMRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 24-bit delta-sigma ADC with integrated PGA (gain 1–128), 2.5-V reference, signal/reference monitors, excitation current sources, and CRC verification. It supports up to five single-ended or three differential inputs and delivers 30 nVRMS noise at 20 SPS (gain = 128), enabling high-accuracy current-shunt measurements in battery management systems.
For engineers reviewing the ADS1260BQWRHMRQ1 datasheet, ADS1260BQWRHMRQ1 pinout, ADS1260BQWRHMRQ1 application, or ADS1260BQWRHMRQ1 equivalent, key selection criteria include its ±40°C to +125°C operation, single-cycle settling digital filter, 1 GΩ PGA input impedance, internal temperature sensor, and VQFN-32 package compatibility with ADS1261-Q1 for scalable designs.
Technical Context
The ADS1260BQWRHMRQ1 implements a 24-bit delta-sigma modulator with programmable FIR or sinc1–sinc4 digital filters, supporting data rates from 2.5 SPS to 40 kSPS. Its CMOS PGA provides gain settings of 1, 2, 4, 8, 16, 32, 64, and 128, with offset drift ≤150 nV/°C (gain = 1) and gain drift ≤0.5 ppm/°C.
It integrates dual 50–3000 µA excitation current sources, burn-out detection (0.05–10 µA), a 420 µV/°C temperature sensor, and real-time monitoring of PGA output, reference voltage, supply rails, and signal integrity via CRC. The device uses an internal oscillator (7.3728 MHz nominal) or external clock input on CLKIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit no-missing-codes output; enables 16.7 million distinct codes for ultra-high dynamic range sensing |
| Data Rate | 2.5 SPS to 40 kSPS; supports both ultra-low-noise precision (e.g., 30 nVRMS @ 20 SPS) and fast response modes |
| PGA Gain Range | 1 to 128 in discrete steps; allows direct interface to mV-level sensors (e.g., RTDs, strain gauges) without external amplification |
| Input Impedance | 1 GΩ in PGA mode; minimizes loading error on high-impedance sensors like thermistors and piezoresistive elements |
| Reference Voltage | Internal 2.5-V ±0.2% initial accuracy, 4 ppm/°C drift; eliminates need for external precision reference in space-constrained BMS designs |
| Excitation Currents | Programmable 50–3000 µA (10 settings); supports 2-/3-/4-wire RTD measurements and sensor burn-out detection |
| Operating Temp | –40°C to +125°C ambient; qualified per AEC-Q100 Grade 1 for under-hood and battery-pack applications |
Pinout & Package
ADS1260BQWRHMRQ1 is housed in a 5.0 mm × 5.0 mm VQFN-32 package with exposed thermal pad soldered to AVSS. Pin functions are electrically validated per TI SBAS784A Rev A (May 2019).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN4 | Analog input/output | Five single-ended or three differential analog inputs; support IDAC1/IDAC2 excitation and REFP0/REFN0 reference routing |
| AINCOM | Analog input/output | Common-mode reference node; also routes IDAC1/IDAC2 and VBIAS level-shift voltage |
| CAPP / CAPN | Analog output | Differential PGA output terminals; require 4.7-nF C0G capacitor for stability and antialias filtering |
| REFOUT | Analog output | 2.5-V reference output; requires 10-µF bypass to AVSS for low-noise operation |
| BYPASS | Analog output | Internal subregulator bypass node; connect 1-µF capacitor to DGND to suppress switching noise |
| START / CS / SCLK / DIN / DOUT/DRDY | Digital I/O | SPI-compatible serial interface with dual-function DOUT/DRDY pin; supports CRC-verified command/data transfers |
| PWDN / RESET / CLKIN | Digital input | Asynchronous power-down (active-low), hardware reset (active-low), and clock source selection (internal/external) |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle settling filter | Enables deterministic conversion latency - critical for closed-loop control and synchronized multi-channel sampling |
| Integrated excitation & burn-out detection | Eliminates external current sources and discrete fault-detection circuitry for RTD and bridge sensor interfaces |
| Signal and reference monitors | Real-time validation of PGA output, REFOUT, AVDD/AVSS, and DVDD ensures measurement integrity before data readout |
| Cyclic redundancy check (CRC) | Hardware-accelerated CRC-16 on all SPI transactions prevents undetected communication corruption in noisy automotive environments |
| Chop-mode operation | Reduces 1/f noise and offset drift to ≤1 nV/°C, improving long-term stability in temperature-varying BMS applications |
Applications
| High-Resolution BMS Current Sensing | RTD-Based Temperature Monitoring |
|---|---|
|
Use Scenario: Precise shunt-based current measurement in 48-V mild-hybrid or EV battery packs under wide temperature and EMI conditions. IC Role / Device Role / Timing Role: Primary ADC capturing voltage across low-value shunts; performs gain-scaling, filtering, and CRC-protected SPI output at 1–10 kSPS. Use Value: 30 nVRMS noise floor and 0.5 ppm/°C gain drift enable <±0.1% full-scale current accuracy over –40°C to +125°C without recalibration. |
Use Scenario: 3-wire or 4-wire Pt100/Pt1000 RTD measurements in motor inverters and battery thermal management units. IC Role / Device Role / Timing Role: Sensor interface with matched excitation currents, ratiometric reference, and cold-junction compensation via internal temperature sensor. Use Value: Integrated 50–3000 µA IDACs with <±0.7% accuracy and 0.1% match error eliminate external current sources and reduce board area by >30%. |
| Weight/Pressure Transducer Interface | Strain-Gauge Load Cell Readout |
|
Use Scenario: High-stability weight sensing in commercial vehicle air suspension control or industrial platform scales. IC Role / Device Role / Timing Role: Front-end digitizer for millivolt-output bridge transducers; applies PGA gain, rejects common-mode noise, and validates reference integrity. Use Value: 130 dB CMRR at 20 SPS and 1 GΩ input impedance prevent errors from cable leakage and EMI-induced common-mode shifts. |
Use Scenario: Precision load cell readout in battery-powered torque tools or robotic joint force feedback systems. IC Role / Device Role / Timing Role: Low-power ADC with programmable data rate (2.5–40 kSPS), internal oscillator, and GPIO-controlled excitation sequencing. Use Value: Power-down current of 2–8 µA and integrated burn-out detection allow safe, autonomous sensor health checks during idle states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1261BQWRHMRQ1 | VQFN-32 pin-compatible; adds 5 extra analog inputs (AIN5–AIN9), 4 GPIOs, and AC excitation capability | Required for 10-channel sensor arrays or bridge sensors needing phase-shifted excitation | Select when scaling from 5- to 10-channel systems or requiring ACX1/ACX2 for Wheatstone bridge linearity enhancement |
| ADS127L11IRHBR | 24-bit, 400-kSPS, no PGA, no internal reference, no excitation sources; 32-pin WQFN | Targeted at high-speed, low-latency applications (e.g., motor phase current) where external signal conditioning is already present | Choose only if system already includes precision op-amps, references, and current sources-and requires >40 kSPS throughput |
Compared with ADS1261BQWRHMRQ1, ADS1260BQWRHMRQ1 reduces pin count and cost for 5-channel use cases while retaining identical noise, drift, and reliability specs; versus ADS127L11IRHBR, it trades raw speed for integrated signal-chain components-reducing BOM count by ≥7 passive/active parts per channel.
Availability
ADS1260BQWRHMRQ1 is available at Aetrix Electronics and suitable for battery management systems, automotive weight/pressure sensing, RTD-based thermal monitoring, and industrial load-cell instrumentation requiring stable component supply across extended temperature ranges.
Supply support for ADS1260BQWRHMRQ1 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 automotive qualification expertise and broad portfolio coverage from signal chain to power management.
The ADS126x-Q1 product line was designed specifically for high-reliability automotive sensing applications-including BMS, chassis control, and thermal management-where AEC-Q100 Grade 1 operation, integrated diagnostics, and long-term parametric stability are mandatory.
FAQ
What is the maximum differential input voltage supported by ADS1260BQWRHMRQ1 in PGA mode?
The maximum differential input voltage for ADS1260BQWRHMRQ1 in PGA mode is ±(AVDD – AVSS – 0.6 V) / Gain, provided VREF ≥ AVDD – AVSS – 0.6 V. At AVDD = 5 V and AVSS = 0 V with gain = 1, this yields ±4.4 V; at gain = 128, it drops to ±34.4 mV. This constraint ensures linear operation and avoids clipping within the modulator's input range.
Does ADS1260BQWRHMRQ1 support external reference inputs?
Yes, ADS1260BQWRHMRQ1 supports external differential reference inputs (REFPx/REFNx) ranging from 0.9 V to AVDD – AVSS. When using an external 5-V reference, effective resolution improves due to increased full-scale range - verified in TI's SBAS784A noise tables. Internal 2.5-V reference remains active but is overridden when external reference is applied.
How does the CRC feature operate in ADS1260BQWRHMRQ1?
ADS1260BQWRHMRQ1 implements hardware CRC-16 on all SPI command and data transactions. CRC is enabled via configuration register and covers register writes, reads, and data conversions. It detects bit errors introduced by EMI or signal integrity issues - essential for functional safety compliance in ASIL-B/C systems using ADS1260BQWRHMRQ1.
Can ADS1260BQWRHMRQ1 perform simultaneous sampling across multiple channels?
No, ADS1260BQWRHMRQ1 uses a single delta-sigma modulator with an input multiplexer and does not support true simultaneous sampling. However, its single-cycle settling digital filter and fast channel switching (<1 µs settling) enable pseudo-simultaneous acquisition with deterministic inter-channel delay - sufficient for most BMS and thermal monitoring use cases where <10 µs skew is acceptable.
What is the role of the BYPASS pin on ADS1260BQWRHMRQ1?
The BYPASS pin on ADS1260BQWRHMRQ1 connects to an internal analog subregulator used for sensitive analog circuitry. A 1-µF ceramic capacitor must be placed between BYPASS and DGND to stabilize this rail and suppress high-frequency noise that could couple into the ADC's reference or modulator stages - omission degrades SNR and increases gain drift.
ADS1260BQWRHMRQ1 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:
- 24
- Sampling Rate (Per Second):
- 40k
- Number of Inputs:
- 10
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- MUX-PGA-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 32-VQFN (5x5)
- Mounting Type:
- Surface Mount, Wettable Flank
- Grade:
- Automotive
- Qualification:
- AEC-Q100
ADS1260BQWRHMRQ1 FAQ
1.How can I place an order for ADS1260BQWRHMRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1260BQWRHMRQ1 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 ADS1260BQWRHMRQ1 reliable?
The price and inventory of ADS1260BQWRHMRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1260BQWRHMRQ1 is usually 5 days.
3.What payment methods are accepted for ADS1260BQWRHMRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1260BQWRHMRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1260BQWRHMRQ1?
ADS1260BQWRHMRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1260BQWRHMRQ1 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 ADS1260BQWRHMRQ1?
For technical support, including ADS1260BQWRHMRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1260BQWRHMRQ1 requirements.
6.How does Aetrix verify that ADS1260BQWRHMRQ1 is sourced from the original manufacturer or authorized distributors?
All ADS1260BQWRHMRQ1 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 ADS1260BQWRHMRQ1 meets industry standards.
7.What is the process for return or replacement of ADS1260BQWRHMRQ1?
All ADS1260BQWRHMRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1260BQWRHMRQ1, 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 ADS1260BQWRHMRQ1 part is unused and in its original packaging.
Return procedure for ADS1260BQWRHMRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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