ADS8688ATDBTR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments ADS8688ATDBTR is a 16-bit, 500 kSPS successive approximation ADC with 8 channels and bipolar ±10.24 V inputs powered from 5 V, featuring an integrated low-drift voltage reference and wide temperature range operation. Ideal for industrial data acquisition and process control. Available worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 38
- Lifecycle
- OBSOLETE
- Datasheet
- ADS8688ATDBTR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16-bit resolution with 500 kSPS throughput across 8 channels for high-precision multi-channel data acquisition
- Bipolar analog input range of ±10.24 V directly accepts industrial sensor signals without external attenuation
- Integrated low-drift 5 V reference with 0.0031% max linearity error in a 38-pin SOIC package for compact designs
Applications
The ADS8688ATDBTR is designed for industrial process control, programmable logic controllers, and precision instrumentation where multiple analog sensor voltages spanning ±10.24 V must be sampled at up to 500 kSPS with 16-bit accuracy. Its 8-channel input structure with integrated voltage reference reduces external component count, simplifying designs for multi-axis motor feedback, pressure transducer arrays, and thermocouple amplifier interfaces. The wide operating temperature range also makes it suitable for outdoor and harsh-environment industrial deployments.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog Input Voltage-Max | 10.24V |
| Analog Input Voltage-Min | -10.24 V |
| Conversion Time-Max | 0.85 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G38 |
| JESD-609 Code | e4 |
| Linearity Error-Max (EL) | 0.0031% |
| Number of Analog In Channels | 8 |
| Number of Bits | 16 |
| Number of Functions | 1 |
| Output Bit Code | BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Sample Rate | 0.5MHz |
| Sample and Hold / Track and Hold | SAMPLE |
| Supply Voltage-Min | 1.65V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | 3A001.A.2.C |
| HTS Code | 8542.39.00.30 |
| Country of Origin | Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADS8688ATDBTR:
ADC, Successive Approximation, 16-Bit, 1 Func, 8 Channel, Serial Access, Bipolar, PDSO38
ADC, Successive Approximation, 16-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO38
Frequently Asked Questions
What resolution and maximum sample rate does the ADS8688ATDBTR deliver across all 8 input channels?
The ADS8688ATDBTR provides 16-bit resolution with a maximum throughput of 500 kSPS when scanning all 8 channels. In auto-scan mode each channel receives a share of the throughput, while in single-channel mode the full 500 kSPS is available, with a minimum conversion time of 0.85 µs per sample.
How does the ADS8688ATDBTR's ±10.24 V bipolar input range simplify industrial sensor interfacing compared to a unipolar ADC?
The ADS8688ATDBTR accepts bipolar signals from -10.24 V to +10.24 V directly, covering the standard ±10 V analog output range of industrial sensors and process control equipment without requiring external level-shift or attenuation circuits. A unipolar ADC would need additional op-amp circuitry to shift and scale such signals, adding cost, noise, and board area to the design.
What linearity error specification does the ADS8688ATDBTR guarantee, and how does this affect measurement accuracy in a 4 to 20 mA loop application?
The ADS8688ATDBTR specifies a maximum linearity error (EL) of 0.0031%, which corresponds to approximately 2 LSB at 16-bit resolution. For a 4 to 20 mA current loop representing a 0 to 100% process variable, this linearity error translates to a measurement uncertainty well below 0.01% of full scale, meeting the accuracy requirements of most industrial process control standards.
Which package does the ADS8688ATDBTR use, and how does it fit a compact 8-channel data acquisition PCB?
The ADS8688ATDBTR is housed in a 38-pin TSSOP small-outline package (JESD-30 code R-PDSO-G38), which is a compact footprint suitable for high-density PCB layouts. Combining 8 analog input channels, a 16-bit ADC, and an integrated low-drift voltage reference in a single 38-pin package significantly reduces the board area needed compared to discrete multi-channel data acquisition solutions.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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