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Texas Instruments ADS8201IRGER
- Part No.:
- ADS8201IRGER
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
ADS8201IRGER.pdf
- Description:
- IC ADC 12BIT SAR 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,512
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Product details
Overview
ADS8201IRGER from Texas Instruments is a low-power, 12-bit, 100kSPS data acquisition system with integrated PGA, 8-channel analog mux, and SPI interface - optimized for portable medical instruments, transducer interfaces, and GPS chipsets. It operates from 2.2V to 5.5V analog/digital supplies, delivers ±1.5 LSB max INL and ±1.0 LSB max DNL, and features an onboard 8×1 FIFO buffer.
For engineers reviewing the ADS8201IRGER datasheet, ADS8201IRGER pinout, ADS8201IRGER application, or ADS8201IRGER equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts for sensor signal chain designs requiring differential input support, programmable gain, and embedded FIFO buffering.
Technical Context
The ADS8201IRGER integrates a capacitor-based SAR ADC, continuous-time PGA (gain = 1/2/4/8), and 8-to-1 analog multiplexer with breakout capability. Its internal 4MHz conversion clock (±20% tolerance) supports 100kSPS throughput with programmable conversion delay (0.5–15ms) via SCR register 0Ah.
It supports true differential/unipolar input ranges (0 to VREF), auto/manual channel selection, mixed-type partial scan, and TAG bit output. The PGAOUT pin enables external signal conditioning, while BUSY/INT polarity and status reporting are software-configurable via control registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR architecture with no missing codes - ensures monotonicity and full-scale digital representation for precision sensor digitization. |
| Throughput Rate | 100kSPS maximum - enables real-time sampling of dynamic signals such as accelerometer or gyro outputs in portable navigation systems. |
| INL / DNL | ±1.5 LSB max INL, ±1.0 LSB max DNL - guarantees accurate end-point linearity and step consistency across full code range for calibrated transducer interfaces. |
| Supply Range | +VA and +VD: 2.2V to 5.5V - allows direct interfacing with Li-ion battery rails (3.0–4.2V) or regulated 3.3V/5V domains without level-shifting. |
| PGA Gain Options | 1, 2, 4, or 8 - permits per-channel gain configuration to maximize SNR when digitizing low-level bridge or thermocouple signals. |
| FIFO Depth | 8-word onboard FIFO - buffers sequential conversions during host SPI read latency, reducing timing-critical interrupt servicing in resource-constrained MCUs. |
| Reference Input | External 2.048V to VA - supports precision bandgap references (e.g., REF3240) and eliminates internal reference drift in temperature-sensitive applications. |
Pinout & Package
ADS8201IRGER is housed in a 24-pin, 4×4 mm QFN package (RGE) with exposed thermal pad tied to AGND. Pin pitch is 0.5 mm; RoHS-compliant and moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0–IN7 | Analog input channels | Support single-ended or differential configurations; high-impedance PGA front-end minimizes loading on high-Z sensors (e.g., piezoresistive bridges). |
| CONVST | Conversion start trigger | Edge-sensitive input initiating sampling sequence independent of CS - enables synchronized multi-device acquisition in distributed sensor nodes. |
| CS / SCLK / SDI / SDO | SPI interface signals | CMOS-compatible, 25MHz max SCLK at VD = 5V - interoperates with standard microcontroller SPI peripherals without glue logic. |
| BUSY/INT | Status/interrupt output | Programmable as active-low BUSY (conversion in progress) or INT (data-ready pulse); polarity configurable via register - simplifies interrupt-driven firmware design. |
| PGAOUT / ADCIN | PGA output / ADC input | Breakout node allows external RC filtering between PGA and ADC - improves anti-aliasing for noisy industrial environments. |
| PGAREF | PGA reference voltage | Setting PGAREF = GND enables unipolar mode; PGAREF = VREF/2 enables true bipolar operation - supports AC-coupled sensor inputs with ±VREF/2 swing. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-chip ready architecture | Global CONVST signal supports synchronous sampling across multiple ADS8201IRGER devices - essential for phase-coherent vibration analysis or multi-axis motion sensing. |
| Programmable averaging function | Reduces RMS noise by √N over N samples - improves effective resolution for slow-varying temperature or pressure measurements without external DSP. |
| Auto/manual channel select with gain | Each channel independently assignable gain (1/2/4/8) and scan order - enables mixed-sensor systems (e.g., ECG + SpO₂ + temperature) on single IC. |
| On-chip conversion clock (CCLK) | Internal 4MHz oscillator eliminates need for external crystal or clock generator - reduces BOM count and PCB area in space-constrained wearables. |
| Power-down mode | ≤2mA typical current draw - extends battery life in intermittent-sampling applications like portable ECG monitors or environmental loggers. |
Applications
| Portable Medical Instrumentation | Transducer Interface Module |
|---|---|
|
Use Scenario: Simultaneous acquisition of ECG, respiration, and skin temperature in handheld patient monitor. IC Role / Device Role / Timing Role: Central data acquisition hub performing synchronized 12-bit sampling across 4+ analog channels with per-channel PGA gain calibration. Use Value: Onboard FIFO and programmable averaging reduce MCU load and improve signal fidelity without external memory or oversampling firmware. |
Use Scenario: Signal conditioning and digitization of strain-gauge bridge outputs in industrial load cell interface. IC Role / Device Role / Timing Role: High-input-impedance PGA front-end with differential input rejects common-mode noise; true differential mode handles ±10mV bridge spans. Use Value: ±1.5 LSB INL and 66dB CMRR ensure <0.1%FS measurement accuracy under varying supply and temperature conditions. |
| GPS Chipset Front-End | Portable Communications Baseband |
|
Use Scenario: Digitizing RF front-end bias voltages and temperature compensation signals in compact GNSS receivers. IC Role / Device Role / Timing Role: Low-power 100kSPS sampling with 2.2V supply compatibility enables direct integration into battery-powered GPS modules. Use Value: 1.32mW power at 2.2V supply extends operational time between charges in field-deployable asset trackers. |
Use Scenario: Monitoring PA bias, battery voltage, and thermal sensors in LTE/Wi-Fi mobile hotspots. IC Role / Device Role / Timing Role: Mixed-type partial scan mode reads only active sensors dynamically - avoids unnecessary conversions and saves energy. Use Value: SPI-compatible interface with 25MHz SCLK allows fast parameter updates from host SoC without dedicated ADC controller IP. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar data acquisition system applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8231IPW | 16-bit resolution, 100kSPS, same 24-pin TSSOP package but no integrated PGA - requires external signal conditioning. | Better DC accuracy needed for precision instrumentation; lacks on-chip gain flexibility for multi-sensor scaling. | Select when higher resolution outweighs PGA convenience and board space is available for external amplifiers. |
| ADS1220IPWR | 24-bit delta-sigma ADC, 2kSPS max, integrated PGA (1–128), 16-pin WQFN - lower speed but superior noise performance. | Ultra-low-noise thermopile or RTD measurement where throughput <2kSPS is acceptable. | Prefer for high-precision, low-frequency sensor types; avoid when >10kSPS sampling or compact 4×4 QFN footprint is required. |
Compared with ADS8201IRGER, ADS8231IPW trades integrated gain for higher resolution and simpler analog front-end, while ADS1220IPWR sacrifices speed for 24-bit noise floor - making ADS8201IRGER optimal for portable, multi-sensor, medium-speed acquisition where PGA integration and QFN size are critical.
Availability
ADS8201IRGER is available at Aetrix Electronics and suitable for portable medical instrumentation, transducer interface modules, GPS chipset front-ends, and portable communications baseband designs requiring stable component supply and long-term industrial temperature support (–40°C to +85°C).
Supply support for ADS8201IRGER 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 low-power signal chains.
The ADS8201IRGER belongs to TI's precision data acquisition portfolio, designed specifically for battery-powered, multi-sensor systems demanding integrated PGA, flexible input configuration, and minimal power consumption in compact form factors.
FAQ
What is the operating temperature range for the ADS8201IRGER?
The ADS8201IRGER is specified for industrial operation from –40°C to +85°C ambient temperature. This range is validated across all electrical parameters including INL, DNL, offset error drift (0.2 ppm/°C), and power-supply rejection ratio (68 dB), ensuring reliable performance in portable medical and outdoor GPS equipment.
Does the ADS8201IRGER require an external clock source?
No, the ADS8201IRGER includes an onboard 4MHz conversion clock oscillator. External clocking is not required; however, the internal clock variance (±20%) can be compensated using the Conversion Delay System Configuration Register (SCR at address 0Ah) to maintain precise timing in high-accuracy applications.
Can the ADS8201IRGER interface directly with a 1.8V microcontroller SPI port?
Yes - the ADS8201IRGER supports separate I/O supply (VD) from 2.2V to 5.5V. When interfacing with a 1.8V MCU, a level-shifter is required on SCLK, SDI, and CS lines since VD must remain ≥2.2V; SDO output is CMOS-compatible but referenced to VD, so direct connection risks overvoltage.
How does the PGA break-out feature (PGAOUT/ADCIN) benefit system design?
The PGAOUT/ADCIN break-out in the ADS8201IRGER allows insertion of external RC filters between the PGA and ADC stages. This enables tailored anti-aliasing for specific sensor bandwidths - for example, adding a 10kHz low-pass filter before ADCIN improves noise immunity in motor current sensing without degrading DC accuracy.
Is the ADS8201IRGER pin-compatible with other members of the ADS82xx family?
No - the ADS8201IRGER uses a unique 24-pin QFN (RGE) package and register map. While functional similarities exist with ADS8231 (TSSOP-24) and ADS8202 (QFN-32), pin assignments, power domains, and control register layouts differ significantly; PCB layout and firmware must be redesigned for substitution.
ADS8201IRGER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 8
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-PGA-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.2V ~ 5.5V
- Voltage - Supply, Digital:
- 2.2V ~ 5.5V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 24-VQFN (4x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8201IRGER FAQ
1.How can I place an order for ADS8201IRGER through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8201IRGER 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 ADS8201IRGER reliable?
The price and inventory of ADS8201IRGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8201IRGER is usually 5 days.
3.What payment methods are accepted for ADS8201IRGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8201IRGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8201IRGER?
ADS8201IRGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8201IRGER 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 ADS8201IRGER?
For technical support, including ADS8201IRGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8201IRGER requirements.
6.How does Aetrix verify that ADS8201IRGER is sourced from the original manufacturer or authorized distributors?
All ADS8201IRGER 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 ADS8201IRGER meets industry standards.
7.What is the process for return or replacement of ADS8201IRGER?
All ADS8201IRGER units undergo pre-shipment inspection (PSI). If there is an issue with ADS8201IRGER, 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 ADS8201IRGER part is unused and in its original packaging.
Return procedure for ADS8201IRGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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