ADS1292RIPBS - 2-Ch 24-Bit AFE Biopotential ECG | Texas Instruments
部品番号: ADS1292RIPBS ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.55 | $85.50 |
| 100 | $7.6 | $760.00 |
| 500 | $6.84 | $3,420.00 |
| 1,000 | $6.08 | $6,080.00 |
ADS1292RIPBS 概要
An analog front-end (AFE) is a mixed-signal subsystem that conditions low-amplitude physiological signals (typically 1 uV to 5 mV) and digitizes them so a host processor can run diagnostic algorithms. In the hierarchy of medical electronics, AFEs sit between the electrode/sensor interface and the digital signal controller (DSC) or microcontroller, replacing the discrete instrumentation amplifier plus separate 16-/24-bit ADC approach with a single qualified, low-power IC. The ADS1292 family is optimized for electrocardiogram (ECG), electromyography (EMG), and electroencephalography (EEG) front-end designs where low input-referred noise and high common-mode rejection are mandatory for diagnostic accuracy.
Key features include 2 high-resolution 24-bit delta-sigma ADCs with simultaneous sampling up to 8 kSPS per channel, integrated PGA gains from 1 to 12, an integrated respiration modulation/demodulation circuit, a 2.7 V to 5.25 V analog supply range, a 1.8 V to 3.6 V digital I/O supply, and a flexible SPI-compatible serial interface. The device provides right-leg drive (RLD) signal generation hardware, lead-off detection comparators, and an internal oscillator that eliminates the external crystal requirement in cost-sensitive wearable designs.
Architecturally, the ADS1292 uses a chopper-stabilized input front-end combined with a 4th-order delta-sigma modulator and a multi-bit digital decimation filter to achieve input-referred noise in the microvolt range while drawing sub-milliwatt quiescent current. The integrated respiration channel uses a high-frequency AC excitation source and synchronous demodulator to extract breathing impedance without an external analog multiplier IC.
Typical applications include wearable fitness and heart-rate monitors, single-lead and multi-lead ECG patches, patient-side telemetry modules, sports and EMG rehabilitation devices, and bioimpedance-based sleep monitors. The wide supply range supports both single-cell Li-ion battery designs (3.7 V nominal) and USB-powered diagnostic instruments (5 V bus).
When designing with this device, ensure the analog and digital ground planes are joined at a single point under the IC exposed pad, place the 1 uF, 0.1 uF, and 10 uF decoupling capacitors as close as possible to AVDD and DVDD pins, and route the right-leg drive (RLD) amplifier output through a feedback network sized for the patient-electrode return path to maximize common-mode rejection at 50/60 Hz mains frequencies.
ドロップイン代替品: ADS1292RIPBS — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
ADS1292IPBS
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1292RIPBSR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1192IPBS
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1292RIPBS 最大定格＆電気的特性
| Manufacturer | Texas Instruments |
| Product Type | Analog Front End (AFE) |
| Number of Channels | 2 |
| ADC Resolution | 24-bit |
| Sample Rate (max) | 8 kSPS per channel |
| Architecture | Delta-Sigma |
| Analog Supply Voltage | 2.7 V to 5.25 V |
| Digital I/O Supply | 1.8 V to 3.6 V |
| Typical Power Consumption | 740 uW at 1 kSPS |
| PGA Gain Range | 1 to 12 |
| Integrated Respiration Channel | Yes (R-suffix) |
| Right-Leg Drive (RLD) Amplifier | Integrated |
| Lead-Off Detection | Integrated comparators |
| Internal Reference | Yes |
| Internal Oscillator | Yes (external crystal not required) |
| Serial Interface | SPI-compatible |
| パッケージ | TQFP-32 5x5 mm (PBS) |
| 動作温度 | -40 C to 85 C |
| MSLレベル | 2 |
| RoHS ステータス | Compliant |
ADS1292RIPBS ピン構成
| ピン 1 | AVDD — Analog supply |
| ピン 2 | AVSS — Analog ground |
| ピン 3 | IN1P — Channel 1 positive input |
| ピン 4 | IN1N — Channel 1 negative input |
| ピン 5 | IN2P — Channel 2 positive input |
| ピン 6 | IN2N — Channel 2 negative input |
| ピン 7 | RLDIN — Right-leg drive input |
| ピン 8 | RLDREF — Right-leg drive reference |
| ピン 9 | RLDOUT — Right-leg drive output to patient |
| ピン 10 | RESP_MODP — Respiration modulation positive output |
| ピン 11 | RESP_MODN — Respiration modulation negative output |
| ピン 12 | GPIO1 — General-purpose I/O 1 |
| ピン 13 | GPIO2 — General-purpose I/O 2 |
| ピン 14 | GPIO3 — General-purpose I/O 3 |
| ピン 15 | GPIO4 — General-purpose I/O 4 |
| ピン 16 | CS — SPI chip select (active low) |
| ピン 17 | SCLK — SPI serial clock |
| ピン 18 | DIN — SPI data input |
| ピン 19 | DOUT — SPI data output |
| ピン 20 | DRDY — Data ready (active low) |
| ピン 21 | CLK — External clock input (optional) |
| ピン 22 | START — Conversion start |
| ピン 23 | PWDN — Power-down (active high) |
| ピン 24 | RESET — Reset (active low) |
| ピン 25 | TEST1 — Test pin 1 (factory use) |
| ピン 26 | TEST2 — Test pin 2 (factory use) |
| ピン 27 | VCAP1 — Decoupling capacitor pin |
| ピン 28 | VCAP2 — Decoupling capacitor pin |
| ピン 29 | VREF — Voltage reference |
| ピン 30 | DVDD — Digital supply |
| ピン 31 | DGND — Digital ground |
| ピン 32 | AVSS — Analog ground (alternate bond) |
主な用途
ADS1292RIPBS の用途: 7 件s: Wearable ECG Heart-Rate Monitor, Single-Lead ECG Patch, Patient Monitoring Telemetry, EMG Rehabilitation Device, Bioimpedance / Respiration Monitor, Sports and Fitness Wearable, EEG Headband Front-End.
Wearable ECG Heart-Rate Monitor
The ADS1292RIPBS fits wearable ECG heart-rate monitors because its 740 uW typical power at 1 kSPS supports multi-day operation from a small Li-ion cell, while the 24-bit delta-sigma ADC delivers input-referred noise low enough to resolve the mV-level QRS complex from dry-contact chest electrodes. The integrated PGA (gains 1-12) eliminates a discrete instrumentation amp, and the SPI interface streams samples directly to a low-power MCU. Designers should drive the right-leg drive (RLD) amplifier output through a feedback network tuned for the electrode-skin interface to maximize 50/60 Hz common-mode rejection.
おすすめ
Single-Lead ECG Patch
The ADS1292RIPBS fits single-lead ECG patches because its 32-pin TQFP 5x5 mm footprint and 740 uW dissipation allow a thin, flexible wearable form factor. The integrated lead-off comparators detect electrode lift in real time, and the internal oscillator eliminates the external crystal often needed in patch designs. Using the R-suffix respiration channel, the same patch also captures breathing rate, doubling the clinical value without additional sensor hardware.
おすすめ
Patient Monitoring Telemetry
The ADS1292RIPBS fits patient monitoring telemetry because its 24-bit resolution preserves diagnostic-grade ECG morphology for arrhythmia detection, while its 5 V analog supply tolerance supports USB-powered bedside monitors. Two simultaneous-sampling channels enable either dual-lead ECG or ECG-plus-impedance respiration from a single IC, reducing BOM cost. SPI throughput up to 8 kSPS per channel accommodates higher-bandwidth signals such as pacemaker pulse detection and external pacing artifacts.
おすすめ
EMG Rehabilitation Device
The ADS1292RIPBS fits EMG rehabilitation devices because its wide PGA gain range (1-12) and 24-bit dynamic range capture both low-level resting muscle tone and high-level contraction bursts. The 8 kSPS per channel maximum sample rate comfortably exceeds the 4 kHz bandwidth of surface EMG signals. Battery operation from 2.7 V to 5.25 V is compatible with single-cell Li-ion chemistries common in handheld rehab stimulator/recorder products.
おすすめ
Bioimpedance / Respiration Monitor
The ADS1292RIPBS R-suffix fits bioimpedance and respiration monitors because the integrated high-frequency AC excitation source and synchronous demodulator extract breathing impedance without an external analog multiplier IC. This single-chip approach reduces BOM and PCB area for wearable respiration patches and sleep-monitoring bands. Both 50 kHz and 64 kHz excitation frequencies are supported internally for impedance spectroscopy applications.
おすすめ
Sports and Fitness Wearable
The ADS1292RIPBS fits sports and fitness wearables because its sub-milliwatt dissipation extends runtime in chest-strap heart-rate straps and armband EMG devices used by athletes. The wide 2.7 V to 5.25 V supply range supports both rechargeable Li-ion designs and direct USB charging without level shifters. The integrated lead-off detection automatically handles dry-electrode lift during high-motion exercise, improving data reliability versus discrete AFE solutions.
おすすめ
EEG Headband Front-End
The ADS1292RIPBS can be deployed in 2-channel EEG headband designs (dry-electrode consumer wellness products) because the 24-bit delta-sigma ADC resolves sub-microvolt EEG rhythms while the integrated PGA handles electrode-tissue offset up to +/-300 mV. The chopper-stabilized input front-end cancels 1/f noise that would otherwise dominate EEG signal chains. The 32-pin TQFP footprint enables compact headband electronics with both channels routed to forehead or temple dry electrodes.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ADS1292RIPBS — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ADS1292IPBS | ADS1292RIPBSR | ADS1192IPBS |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | TQFP-32 (PBS) 5x5 mm | TQFP-32 (PBS) 5x5 mm - same | TQFP-32 (PBS) 5x5 mm - same | TQFP-32 (PBS) 5x5 mm - same |
| Number of Channels | 2 | 2 | 2 | 2 |
| ADC Resolution | 24-bit | 24-bit | 24-bit | 16-bit |
| Respiration Channel | Yes (integrated) | No | Yes (integrated) | No |
| Sample Rate (max) | 8 kSPS | 8 kSPS | 8 kSPS | 8 kSPS |
| Analog Supply | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V |
| Typical Power @ 1 kSPS | 740 uW | approx. 660 uW (no resp) | 740 uW | approx. 495 uW |
| Lead-Off Detection | Integrated comparators | Integrated comparators | Integrated comparators | Integrated comparators |
主な差別化要因
- Integrated respiration channel (R-suffix) （vs ADS1292IPBS)
- 24-bit resolution vs 16-bit on ADS1192 （vs ADS1192IPBS)
- Same TQFP-32 footprint as ADS1192 family （vs ADS1192IPBS)
設計ノート
The 32-pin TQFP-32 (PBS) package has an exposed thermal pad that must be soldered to a continuous analog ground plane on the top layer. Route the digital SPI bus away from the analog IN1P/IN1N/IN2P/IN2N/RLDIN traces; place the 1 uF, 0.1 uF, and 10 uF decoupling capacitors on AVDD and DVDD as close to the supply pins as possible to suppress switching noise from the host MCU.
Estimated: at 8 kSPS with PGA gain 12, the input-referred noise is below 10 uVpp, but this assumes well-shielded electrode cables and a properly driven right-leg-drive (RLD) loop. Without RLD feedback, mains 50/60 Hz common-mode noise degrades SNR by 30-40 dB. Connect the RLD amplifier output through a 100 kohm series resistor to the patient reference electrode.
Use a ferrite bead or pi-filter between the host 3.3 V regulator and the ADS1292RIPBS DVDD pin to isolate digital switching noise from the analog front-end. Power up AVDD before DVDD by at least 1 ms to prevent digital-domain latch-up through the internal ESD structures; sequence the ADXLin voltage rails accordingly if using a power-rail sequencer IC.
Do not float any of the GPIO pins - either tie them to DGND through a 100 kohm resistor or drive them to a defined logic level. The internal oscillator requires the CLKSEL register bit to be set for default internal-oscillator operation; failing to do so leaves the part waiting for an external clock on the CLK pin, which appears as a no-data fault on DRDY.
コンプライアンス情報
RoHS and REACH compliant per TI product page; MSL Level-2-260C-1 YEAR per partgenie.ai listing. AEC-Q100 not applicable (medical-grade, not automotive-grade).
