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Texas Instruments ADS8372IBRHPRG4
- Part No.:
- ADS8372IBRHPRG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-VQFN Exposed Pad
- Datasheet:
-
ADS8372IBRHPRG4.pdf
- Description:
- IC ADC 16BIT SAR 28VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,800
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Product details
Overview
ADS8372IBRHPRG4 from Texas Instruments is a 16-bit, 600-kHz fully differential pseudo-bipolar input SAR ADC with integrated 4.096-V reference, onboard reference buffer, and high-speed serial interface up to 40 MHz. It delivers ±0.75 LSB max INL, ±0.5 LSB max DNL, and 93.5 dB SINAD at 1 kHz - optimized for high-accuracy data acquisition in medical instruments and transducer interfaces.
For engineers reviewing the ADS8372IBRHPRG4 datasheet, ADS8372IBRHPRG4 pinout, ADS8372IBRHPRG4 application, or ADS8372IBRHPRG4 equivalent, key selection considerations include its 28-pin 6×6 QFN package, zero-latency operation, pseudo-bipolar ±4.2 V input range, nap mode power reduction to 15 mW, and compatibility with SPI-compatible read protocols using CS/FS/SCLK/SDO.
Technical Context
The ADS8372IBRHPRG4 implements a capacitor-based SAR architecture with inherent sample-and-hold, supporting fully differential analog inputs and 2's complement serial output. Its conversion control uses CONVST qualified by CS, with BUSY signaling active conversion and quiet zones (tquiet1–tquiet3) required to maintain specified linearity and dynamic performance.
It integrates an internal 4.096-V reference with ±25 ppm/°C drift and 10 µA source capability, buffered via REFIN/REFM/REFOUT pins. Digital I/O operates from +VBD = 2.7–5.25 V, while analog supply +VA ranges 4.75–5.25 V; separate AGND and BDGND planes are mandated per pinout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit NMC - guarantees no missing codes across full operating temperature range (–40°C to +85°C). |
| Sample Rate | 600 kHz - enables real-time capture of signals up to ~250 kHz Nyquist bandwidth with adequate oversampling margin. |
| INL / DNL | ±0.75 LSB max INL, ±0.5 LSB max DNL - ensures monotonicity and <0.001% full-scale absolute accuracy for precision measurement. |
| SINAD / SFDR | 93.5 dB SINAD, 120 dB SFDR at 1 kHz - supports >15.2 ENOB and clean spectral performance in low-noise signal chains. |
| Input Range | Pseudo-bipolar ±4.2 V - accepts differential inputs centered at VREF/2 (2.048 V), enabling direct connection to ±4 V sensor outputs without external level-shifting. |
| Power Modes | 110 mW at 600 kHz, 15 mW in nap mode, 10 µW in power-down - allows dynamic power scaling for battery-operated or thermally constrained systems. |
| Reference | Integrated 4.096-V reference with ±8 mV initial accuracy and 25 ppm/°C drift - eliminates need for external reference IC and reduces BOM count and layout area. |
Pinout & Package
ADS8372IBRHPRG4 is housed in a 28-pin 6×6 mm QFN package with exposed thermal pad requiring soldering to PCB ground plane for thermal and mechanical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN / –IN | Differential analog input | Accepts fully differential pseudo-bipolar signal up to ±4.2 V; requires matched trace routing and local 0.1-µF decoupling at REFM. |
| CONVST / CS / FS | Conversion control inputs | CONVST initiates sampling when qualified by low CS; FS enables frame-sync read mode independent of CS timing. |
| BUSY / SDO / SCLK | Status and serial interface | BUSY high during conversion; SDO outputs 16-bit 2's complement MSB-first on SCLK rising edge; supports up to 40 MHz clock rate. |
| REFIN / REFOUT / REFM | Reference interface | REFIN accepts internal or external reference; REFOUT sources 4.096 V; REFM is reference ground tied to AGND - all require 0.1-µF + 1-µF decoupling. |
| +VA / +VBD / AGND / BDGND | Power and ground | +VA (4.75–5.25 V) powers analog core; +VBD (2.7–5.25 V) powers digital I/O; AGND and BDGND must be shorted under device per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Output data reflects sampled instant without pipeline delay - critical for closed-loop control and real-time feedback systems. |
| Onboard conversion clock | Eliminates need for external master clock; internal timing generator ensures deterministic tconv = 1.16 µs and aperture jitter ≤12 ps RMS. |
| Nap mode power management | Reduces current to 3 mA between conversions while preserving reference settling - cuts average power >85% vs. continuous sampling at same throughput. |
| Quiet zone compliance | Hardware-enforced tquiet1/tquiet2/tquiet3 timing windows prevent digital switching noise from coupling into analog sampling path, preserving ±0.75 LSB INL. |
| High CMRR & PSRR | 80 dB DC CMRR and 55 dB PSRR minimize error from common-mode shifts and supply ripple - essential for noisy industrial environments. |
Applications
| Medical Instrumentation | Optical Networking |
|---|---|
Use Scenario: High-resolution ECG/EEG front-end digitizing low-amplitude bio-signals with minimal added noise. IC Role / Device Role / Timing Role: Primary SAR ADC capturing differential electrode pairs at 600 kSPS with 93.5 dB SINAD and integrated reference stability. Use Value: Eliminates external reference and buffer ICs, reducing component count and board space while maintaining clinical-grade accuracy over –40°C to +85°C. | Use Scenario: Monitoring laser diode bias current and photodiode feedback in DWDM transceivers. IC Role / Device Role / Timing Role: Precision current-to-voltage conversion digitization with pseudo-bipolar input handling bidirectional monitoring ranges. Use Value: ±4.2 V input range accommodates both forward and reverse bias conditions without external op-amp level shifting, simplifying analog front-end design. |
| Transducer Interface | Magnetometer Systems |
Use Scenario: Digitizing outputs from strain-gauge bridges and capacitive pressure sensors with microvolt-level resolution. IC Role / Device Role / Timing Role: Low-noise, high-linearity ADC with 16-bit NMC and 120 dB SFDR rejecting harmonic distortion from excitation sources. Use Value: Integrated reference buffer and 40 MHz serial interface enable direct FPGA/MCU connection without additional signal conditioning, accelerating time-to-test. | Use Scenario: Reading fluxgate or AMR magnetometer outputs requiring sub-microvolt sensitivity and thermal drift compensation. IC Role / Device Role / Timing Role: High-accuracy ADC with ±25 ppm/°C reference drift and 0.25 LSB typ DNL for stable field measurements across temperature. Use Value: Onboard 4.096-V reference with 10 µA sourcing capability directly drives ratiometric sensor excitation, removing reference dependency on system supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-accuracy SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8371IRHPT | Same 16-bit, 600-kHz SAR architecture but lacks integrated reference; requires external 4.096-V reference and buffer. | Used where reference flexibility or higher initial accuracy (<±0.5 mV) is needed; adds two passive components and layout complexity. | Select ADS8371IRHPT only if reference voltage must be user-adjustable or traceable to metrology-grade source. |
| ADS8382IRHPT | 18-bit, 600-kHz variant with identical pinout and serial interface; offers ±0.5 LSB max INL and 98 dB SINAD. | Targets ultra-high-precision applications like calibration equipment; consumes ~130 mW and requires tighter layout for 18-bit noise floor. | Choose ADS8382IRHPT when ENOB >15.8 is mandatory and power/thermal budget permits +20 mW overhead. |
Compared with ADS8371IRHPT, ADS8372IBRHPRG4 saves board space and BOM cost via integrated reference, while ADS8382IRHPT trades higher resolution for increased power and stricter noise control - making ADS8372IBRHPRG4 optimal for balanced precision, size, and power in portable medical and industrial sensing.
Availability
ADS8372IBRHPRG4 is available at Aetrix Electronics and suitable for medical instrumentation, optical networking, transducer interface, and magnetometer systems requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade (–40°C to +85°C).
Supply support for ADS8372IBRHPRG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The ADS8372IBRHPRG4 belongs to TI's high-speed SAR ADC family designed for precision data acquisition in space-constrained, low-power systems where integrated references and zero-latency operation are critical.
FAQ
What is the maximum sample rate supported by the ADS8372IBRHPRG4?
The ADS8372IBRHPRG4 supports a maximum sample rate of 600 kHz, corresponding to a minimum conversion time of 1.16 µs. This rate is achievable across the full industrial temperature range (–40°C to +85°C) with all specifications guaranteed, including ±0.75 LSB INL and 93.5 dB SINAD at 1 kHz input frequency.
Does the ADS8372IBRHPRG4 require an external reference voltage?
No, the ADS8372IBRHPRG4 includes an onboard 4.096-V reference with ±8 mV initial accuracy and 25 ppm/°C drift. It can operate using this internal reference by connecting REFOUT to REFIN and tying REFM to AGND. An external reference may be used via the REFIN pin if higher initial accuracy or different voltage is required.
How does the nap mode function in the ADS8372IBRHPRG4?
The nap mode in ADS8372IBRHPRG4 reduces supply current to 3 mA between conversions while retaining reference stability. It activates automatically when CONVST_QUAL is low at end-of-conversion. Recovery time is 300 ns, and acquisition time increases from 0.5 µs to 0.8 µs - a trade-off for >85% average power reduction in burst-sampling applications.
What are the quiet zone requirements for maintaining ADS8372IBRHPRG4 performance?
The ADS8372IBRHPRG4 specifies three quiet zones: tquiet1 (30 ns before CONVST_QUAL fall), tquiet2 (10 ns after CONVST_QUAL fall), and tquiet3 (600 ns before BUSY fall). During these intervals, all digital interface signals (CS, FS, SCLK) must remain stable to prevent coupling noise into the analog sampling path and preserve ±0.75 LSB INL.
Is the ADS8372IBRHPRG4 pin-compatible with other devices in the ADS83xx family?
Yes, the ADS8372IBRHPRG4 is pin-compatible with the ADS8382 (18-bit variant) and shares the same 28-pin 6×6 QFN package and pin assignments for power, ground, analog inputs, and serial interface. However, it is not pin-compatible with lower-resolution variants like ADS8370 or ADS8371 due to differing internal reference and buffer configurations.
ADS8372IBRHPRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 28-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 600k
- Number of Inputs:
- 1
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-QFN (6x6)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8372IBRHPRG4 FAQ
1.How can I place an order for ADS8372IBRHPRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8372IBRHPRG4 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 ADS8372IBRHPRG4 reliable?
The price and inventory of ADS8372IBRHPRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8372IBRHPRG4 is usually 5 days.
3.What payment methods are accepted for ADS8372IBRHPRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8372IBRHPRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8372IBRHPRG4?
ADS8372IBRHPRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8372IBRHPRG4 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 ADS8372IBRHPRG4?
For technical support, including ADS8372IBRHPRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8372IBRHPRG4 requirements.
6.How does Aetrix verify that ADS8372IBRHPRG4 is sourced from the original manufacturer or authorized distributors?
All ADS8372IBRHPRG4 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 ADS8372IBRHPRG4 meets industry standards.
7.What is the process for return or replacement of ADS8372IBRHPRG4?
All ADS8372IBRHPRG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS8372IBRHPRG4, 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 ADS8372IBRHPRG4 part is unused and in its original packaging.
Return procedure for ADS8372IBRHPRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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