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Texas Instruments ADS1288IRHBT
- Part No.:
- ADS1288IRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ADS1288IRHBT.pdf
- Description:
- LOW-POWER, 32-BIT TWO-CHANNEL DE
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
ADS1288IRHBT from Texas Instruments is a 32-bit delta-sigma analog-to-digital converter with integrated programmable gain amplifier (PGA), designed for seismic data acquisition systems. It delivers 122dB dynamic range at 500SPS, <–120dB THD, and 120dB CMRR, operating from ±2.5V, 3.3V, or 5V analog supplies. Its two-channel multiplexer, clock error compensation, and flexible sinc+FIR+IIR digital filter support geophone and hydrophone interfacing in battery-powered field equipment.
For engineers reviewing the ADS1288IRHBT datasheet, ADS1288IRHBT pinout, ADS1288IRHBT application, or ADS1288IRHBT equivalent, this page provides verified technical context, real-world seismic use cases, validated pin functions, confirmed alternative options for low-noise precision ADC selection, and supply-chain-ready availability details - all grounded in TI's SBASAW0A revision November 2025 production data.
Technical Context
The ADS1288IRHBT implements a high-resolution delta-sigma modulator paired with a configurable FIR/IIR digital filter chain supporting linear or minimum-phase response and programmable high-pass filtering. Its sample rate converter achieves ±244ppm frequency compensation range and 7.45ppb resolution to correct clock drift in remote deployments.
It integrates a dual-channel analog multiplexer, on-chip offset/gain calibration, SYNC input for synchronized multi-device acquisition, and general-purpose GPIOs. The PGA offers gains of 1–64 with 20nV/√Hz input voltage noise density (gain=16), while the unity-gain buffer mode reduces power to 3mW typical - enabling direct connection to geophones without external amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 32-bit output word length; enables sub-microvolt signal resolution in seismic waveform capture. |
| Data Rate | 125–2000 SPS; supports high-fidelity low-frequency earth vibration sampling (e.g., 0.1–100 Hz band). |
| Dynamic Range | 122 dB at 500 SPS (typical); allows detection of weak seismic signals buried in thermal noise floor. |
| THD | < –120 dB (typical); ensures minimal harmonic distortion when digitizing low-amplitude geophone outputs. |
| CMRR | 120 dB (typical at 60 Hz); rejects common-mode interference from long cable runs in field installations. |
| Power Consumption | 3 mW (buffer mode), 5 mW (PGA mode) at 500 SPS; extends battery life in portable seismic nodes. |
| Analog Supply Range | ±2.5 V, 3.3 V, or 5 V; accommodates diverse sensor interface topologies and legacy system rails. |
Pinout & Package
The ADS1288IRHBT is housed in a 5mm × 5mm, 32-pin VQFN package (RHB) with exposed thermal pad connected to AVSS. Pin functions are validated per TI SBASAW0A Figure 4-1 and Table 4-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1P / AIN1N AIN2P / AIN2N |
Differential analog inputs | Two independent channels for geophone or hydrophone differential sensing; support transformer-coupled and direct-connect configurations. |
| REFP / REFN | Voltage reference inputs | Accept 2.4–2.6 V reference; enable ratiometric measurement stability against supply variation. |
| CLK / DRDY / DIN / DOUT / SCLK / CS | Serial interface signals | Standard SPI-compatible timing (1.65–3.6 V IOVDD); DRDY indicates valid conversion data ready for readout. |
| SYNC / RESET / PWDN | Control inputs | Enable precise multi-unit synchronization, cold-start reset, and ultra-low-power sleep (1–5 µA). |
| GPIO0 / GPIO1 | Configurable digital I/O | Support status signaling, external trigger input, or auxiliary control in autonomous field nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible digital filter | Selectable sinc + FIR + IIR with linear/minimum-phase option and programmable high-pass corner (0.1–10 Hz) to remove DC drift and low-frequency noise. |
| PGA with gain 1–64 | Extends effective input range and SNR for microvolt-level geophone outputs; eliminates need for discrete front-end amplifiers. |
| Sample rate converter | Compensates clock frequency errors up to ±244 ppm with 7.45 ppb resolution - critical for GPS-disciplined or crystal-based timing in distributed arrays. |
| Offset and gain calibration | On-chip auto-calibration corrects initial errors to ±1 µV offset and ±2 ppm gain error, reducing post-processing burden. |
| Low-noise analog architecture | 120 dB CMRR and 95 dB PSRR (AVDD2) ensure integrity of weak signals amid noisy industrial or vehicular environments. |
Applications
| Energy Exploration | Passive Seismic Monitoring |
|---|---|
|
Use Scenario: Deployed in land-based or marine nodal arrays to record reflected seismic waves from controlled sources (e.g., vibroseis trucks or airguns). IC Role / Device Role / Timing Role: Primary ADC capturing raw geophone voltage waveforms with 32-bit precision and 122 dB dynamic range at 500 SPS. Use Value: Enables high-fidelity subsurface imaging by resolving amplitude differences down to 1 µV across 140 dB signal range. |
Use Scenario: Installed in permanent borehole or surface stations to detect natural microseisms and tectonic activity over months without maintenance. IC Role / Device Role / Timing Role: Low-power ADC operating in buffer mode (3 mW) with SYNC input for time-aligned multi-node recording. Use Value: Extends battery life beyond 1 year while maintaining <–120 dB THD for accurate spectral analysis of ambient noise fields. |
| Earth Sciences & Geology | Precision Instrumentation |
|
Use Scenario: Integrated into portable gravimeters and tiltmeters measuring crustal deformation during volcanic or seismic events. IC Role / Device Role / Timing Role: Dual-channel ADC acquiring differential sensor outputs with on-chip offset calibration and 120 dB CMRR. Use Value: Rejects ground-loop interference and cable-induced common-mode noise in unshielded field cabling setups. |
Use Scenario: Used in laboratory-grade vibration analyzers and structural health monitoring systems requiring traceable metrology-grade digitization. IC Role / Device Role / Timing Role: High-accuracy ADC with 7.45 ppb sample rate converter resolution and calibrated FIR filter group delay. Use Value: Delivers phase-coherent multi-channel acquisition essential for modal analysis and transfer function measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution, low-noise ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1287IRHBT | 32-bit, single-channel, no PGA; 120 dB dynamic range at 500 SPS; 2.5 mW power (buffer only) | Lacks multiplexing and programmable gain - suitable only for single-sensor, fixed-gain deployments | Select when channel count and gain flexibility are unnecessary and lowest possible power is prioritized. |
| AD7768-1ACPZ | 24-bit, 1-channel, sigma-delta ADC; 115 dB dynamic range at 256 kSPS; 12.7 mW power; integrated reference | Higher speed but lower resolution and dynamic range; no built-in PGA or SYNC input | Prefer for broadband vibration analysis above 1 kHz where 32-bit seismic resolution is not required. |
Compared with ADS1287IRHBT and AD7768-1ACPZ, the ADS1288IRHBT uniquely combines dual-channel multiplexing, on-chip PGA (1–64×), 122 dB dynamic range, and SYNC-synchronized operation - making it the only option qualified for battery-powered, multi-geophone seismic array nodes demanding both ultra-low noise and field-deployable robustness.
Availability
ADS1288IRHBT is available at Aetrix Electronics and suitable for energy exploration, passive seismic monitoring, and earth sciences instrumentation requiring stable component supply, long-lifecycle assurance, and full traceability for field-deployed equipment.
Supply support for ADS1288IRHBT 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 deep expertise in precision data acquisition and industrial signal chain solutions.
The ADS1288IRHBT belongs to TI's seismic-grade precision ADC product line, engineered specifically for low-power, high-dynamic-range digitization in geophysical sensing - emphasizing noise performance, clock stability, and ruggedized operation from –40°C to +85°C.
FAQ
What is the maximum data rate supported by the ADS1288IRHBT?
The ADS1288IRHBT supports data rates from 125 SPS to 2000 SPS. At the maximum 2000 SPS, dynamic range decreases to 116 dB (PGA gain = 1), while THD remains below –120 dB. This range balances bandwidth and resolution for seismic applications where most energy resides below 100 Hz.
Does the ADS1288IRHBT require external amplification for geophone interfacing?
No - the ADS1288IRHBT integrates a low-noise PGA with gains from 1 to 64, enabling direct connection to geophones and transformer-coupled hydrophones. At PGA gain = 16, input voltage noise density is 20 nV/√Hz, eliminating the need for external preamplifiers in most field configurations.
How does the sample rate converter in the ADS1288IRHBT improve timing accuracy?
The ADS1288IRHBT's sample rate converter compensates for clock frequency errors up to ±244 ppm with 7.45 ppb resolution. This ensures precise time alignment across distributed sensor nodes using low-cost crystals, avoiding GPS dependency while maintaining phase coherence for array beamforming.
What are the recommended power supply configurations for the ADS1288IRHBT?
The ADS1288IRHBT supports multiple analog supply configurations: ±2.5 V, 3.3 V, or 5 V for AVDD1/AVSS; 2.375–5.25 V for AVDD2; and 1.65–3.6 V for IOVDD. For lowest power, operate AVDD1 at 3.3 V and use buffer mode (3 mW); for maximum dynamic range, use 5 V AVDD1 with PGA gain = 1.
Can the ADS1288IRHBT perform simultaneous sampling across both analog input channels?
No - the ADS1288IRHBT uses a single delta-sigma modulator with a two-channel multiplexer. Channels are sampled sequentially, not simultaneously. However, its fast settling and SYNC input allow tightly coordinated interleaved sampling across multiple ADS1288IRHBT devices for pseudo-simultaneous acquisition in multi-node arrays.
ADS1288IRHBT 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:
- 32
- Sampling Rate (Per Second):
- 2k
- Number of Inputs:
- 2
- 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
- Voltage - Supply, Analog:
- 2.375V ~ 5.25V
- Voltage - Supply, Digital:
- 1.65V ~ 3.6V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-VQFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1288IRHBT FAQ
1.How can I place an order for ADS1288IRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1288IRHBT 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 ADS1288IRHBT reliable?
The price and inventory of ADS1288IRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1288IRHBT is usually 5 days.
3.What payment methods are accepted for ADS1288IRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1288IRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1288IRHBT?
ADS1288IRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1288IRHBT 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 ADS1288IRHBT?
For technical support, including ADS1288IRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1288IRHBT requirements.
6.How does Aetrix verify that ADS1288IRHBT is sourced from the original manufacturer or authorized distributors?
All ADS1288IRHBT 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 ADS1288IRHBT meets industry standards.
7.What is the process for return or replacement of ADS1288IRHBT?
All ADS1288IRHBT units undergo pre-shipment inspection (PSI). If there is an issue with ADS1288IRHBT, 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 ADS1288IRHBT part is unused and in its original packaging.
Return procedure for ADS1288IRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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