ADS8382IRHPRG4 - 18-Bit 600kSPS Serial ADC, 28-VQFN | Texas Instruments
MPN: ADS8382IRHPRG4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.85 | $168.50 |
| 100 | $14.5 | $1,450.00 |
| 500 | $12.4 | $6,200.00 |
| 1,000 | $10.95 | $10,950.00 |
ADS8382IRHPRG4 Overview
An SAR (Successive Approximation Register) ADC is a medium-to-high resolution converter that uses an internal capacitive DAC and comparator to successively narrow a digital approximation of the analog input, one bit at a time per clock cycle. SAR ADCs occupy the middle of the converter hierarchy - faster than delta-sigma ADCs but typically lower in resolution - and sit within the broader category of data converters, which bridge the analog and digital domains in mixed-signal systems. The ADS8382 specifically targets applications requiring single-shot precision at sub-MHz sampling rates without the latency of oversampling converters.
Key features of the ADS8382IRHPRG4 include 600-kSPS throughput with serial data interface clock speeds up to 40 MHz, an integrated low-drift reference, pseudo-bipolar fully differential input supporting +/-Vref input range, low power consumption suitable for battery-powered and portable instrumentation, and a 28-VQFN exposed-pad package providing low thermal resistance for reliable industrial-grade operation. The CMOS serial interface simplifies board routing and reduces pin count compared to parallel-output ADCs in the same resolution class.
The converter uses a charge-redistribution SAR architecture with an input sample-and-hold that supports fast acquisition of rapidly changing signals. The integrated reference reduces external BOM count, while the pseudo-bipolar input accommodates signals that swing around a common-mode voltage rather than ground-referenced single-ended signals.
Typical applications include industrial process control loop measurement, precision weigh scales and load cell signal chains, medical patient monitoring instrumentation, optical sensor front-ends, and portable data loggers where 18-bit resolution and 600 kSPS throughput are simultaneously required.
When designing with the ADS8382IRHPRG4, ensure the VQFN exposed pad is soldered to a sufficient ground copper pour to meet the 31 C/W thermal resistance specification, and place the internal reference bypass capacitor as recommended in the manufacturer datasheet.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for ADS8382IRHPRG4 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADS8382IRHPRG4 (same form factor and footprint) — differing in Architecture, Conversion Time, Data Interface, Input Type, Number of Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADS8382IRHPR
✅ Drop-In✓ In Stock
$9.65 / Unit
View Datasheet →ADS8382IRHPT
✅ Drop-In📋 Reference alternative (not in catalog)
ADS8382IBRHPRG4
✅ Drop-In📋 Reference alternative (not in catalog)
ADS8382IBRHPT
✅ Drop-In📋 Reference alternative (not in catalog)
ADS8382IRHPRG4 Maximum Ratings & Electrical Characteristics
| Resolution | 18 bits |
| Sample Rate | 600 kSPS |
| Conversion Time | 1.16 us |
| Architecture | SAR (Successive Approximation) |
| Input Type | Fully Differential, Pseudo-Bipolar |
| Data Interface | Serial (CMOS, up to 40 MHz) |
| Number of Channels | 1 |
| Input Range | 0 V to Vref (pseudo-bipolar +/-Vref) |
| Integral Linearity Error (INL) | 0.0019% (typ) |
| Reference | Internal (integrated) |
| Package / Case | 28-VQFN Exposed Pad (RHP) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| Temperature Grade | Industrial |
| Packaging | Tape & Reel (TR) |
| RoHS Status | Pb-Free (RoHS compliant) |
ADS8382IRHPRG4 Pin Configuration
| Pin 1 | AVDD — Analog supply voltage |
| Pin 2 | AVSS — Analog ground |
| Pin 3 | REFCAP — Reference bypass capacitor |
| Pin 4 | REF — Reference input/output |
| Pin 5 | AINP — Analog input positive |
| Pin 6 | AINM — Analog input negative |
| Pin 7 | AGND — Analog ground |
| Pin 8 | DGND — Digital ground |
| Pin 9 | DVDD — Digital supply voltage |
| Pin 10 | CS — Chip select (active low) |
| Pin 11 | SCLK — Serial clock input |
| Pin 12 | SDO — Serial data output |
| Pin 13 | SDI — Serial data input |
| Pin 14 | CONVST — Conversion start |
| Pin 15 | RESET — Reset input |
| Pin 16 | BUSY — Busy output indicator |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | AVDD — Analog supply voltage (2) |
| Pin 20 | AVSS — Analog ground (2) |
| Pin 21 | AVDD — Analog supply voltage (3) |
| Pin 22 | AVSS — Analog ground (3) |
| Pin 23 | REFGND — Reference ground |
| Pin 24 | REFIN — Reference input |
| Pin 25 | NC — Not connected (per datasheet) |
| Pin 26 | NC — Not connected (per datasheet) |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | NC — Not connected (per datasheet) |
Typical Applications
ADS8382IRHPRG4 is suitable for 6 applications: Industrial Process Control Measurement, Precision Weigh Scales / Load Cell Signal Chain, Medical Patient Monitoring Instrumentation, Optical Sensor Front-End Digitization, Portable Data Loggers and Field Instrumentation, Multi-Channel Sensor Aggregation Modules.
Industrial Process Control Measurement
The ADS8382IRHPRG4's 18-bit resolution and 600 kSPS throughput make it ideal for industrial process control loops requiring precise measurement of temperature, pressure, and flow sensor signals. The fully differential pseudo-bipolar input rejects common-mode noise from motor drives and switching power supplies commonly found on factory floors. Operating from -40C to 85C industrial temperature range, the converter handles harsh plant environments. With 0.0019% linearity error and an integrated reference, the device eliminates the need for external precision references and reduces calibration overhead in multi-channel PLC and DCS analog input modules.
Recommended
Precision Weigh Scales / Load Cell Signal Chain
The ADS8382IRHPRG4 is well-suited for high-precision load cell and weigh scale digitization, where 18-bit resolution captures the small differential signals from strain-gauge bridges. The integrated voltage reference reduces BOM count for cost-sensitive weighing equipment, while the 600 kSPS sample rate enables fast settling for multi-plexed load cell arrays. The fully differential input directly interfaces to the bridge output, rejecting common-mode thermocouple and ground-loop noise. Industrial temperature grade ensures reliable operation in non-climate-controlled weighing stations.
Recommended
Medical Patient Monitoring Instrumentation
The ADS8382IRHPRG4 serves medical patient monitoring devices such as infusion pumps, ECG front-ends, and blood-pressure monitors that require high-resolution digitization of low-frequency physiological signals. The 18-bit resolution captures micro-volt-level bioelectric signals after analog front-end amplification, while 600 kSPS throughput provides ample oversampling for digital filtering. The integrated reference simplifies FDA submission documentation by reducing the analog BOM count. Pb-Free RoHS compliance supports modern medical device environmental requirements.
Recommended
Optical Sensor Front-End Digitization
The ADS8382IRHPRG4's differential pseudo-bipolar input accepts the bipolar output signals from photodiode transimpedance amplifiers in optical sensing systems. With 18-bit dynamic range, the converter captures both strong signals (ambient light) and weak signals (pulsed laser return) without ranging. The 600 kSPS sample rate supports LIDAR receiver channels, spectroscopy detectors, and fiber-optic power monitors. The serial CMOS interface reduces board routing complexity in densely packed optical sensor arrays.
Recommended
Portable Data Loggers and Field Instrumentation
The ADS8382IRHPRG4 is a strong fit for portable battery-powered data loggers and field instrumentation where 18-bit precision is needed at moderate sample rates. The low power consumption of the SAR architecture and integrated reference minimize battery drain, while the 28-VQFN exposed-pad package provides mechanical robustness in handheld enclosures. Industrial -40C to 85C operating range covers outdoor and vehicular field deployment. The serial interface enables direct connection to low-pin-count microcontrollers such as the MSP430 family.
Recommended
Multi-Channel Sensor Aggregation Modules
The ADS8382IRHPRG4 supports multi-channel sensor aggregation designs through external analog multiplexing, where the 600 kSPS throughput enables fast cycling across many sensor inputs. The 1.16 us conversion time sets the per-channel settling budget, and the pseudo-bipolar differential input tolerates ground-potential differences between remote sensor locations. Designers commonly aggregate thermocouple, RTD, and 4-20 mA current-loop signals into a single ADS8382 channel with appropriate analog front-end conditioning. The 28-VQFN package fits standard 0.5 mm pitch sensor hub PCBs.
Recommended
Recommended Products Summary
Engineering reference data for ADS8382IRHPRG4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS8382IRHPR | ADS8382IRHPT | ADS8382IBRHPRG4 | ADS8382IBRHPT |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-28 (RHP) Exposed Pad | VQFN-28 (RHP) - same | VQFN-28 (RHP) - same | VQFN-28 (RHP) - same | VQFN-28 (RHP) - same |
| Resolution | 18 bits | 18 bits | 18 bits | 18 bits | 18 bits |
| Sample Rate | 600 kSPS | 600 kSPS | 600 kSPS | 600 kSPS | 600 kSPS |
| Conversion Time | 1.16 us | 1.16 us | 1.16 us | 1.16 us | 1.16 us |
| Input Type | Fully Differential Pseudo-Bipolar | Fully Differential Pseudo-Bipolar | Fully Differential Pseudo-Bipolar | Fully Differential Pseudo-Bipolar | Fully Differential Pseudo-Bipolar |
| Linearity Grade | Standard (I grade) | Standard (I grade) | Standard (I grade) | B grade (tighter INL) | B grade (tighter INL) |
| Packaging Option | Tape & Reel (TR) G4 | Tape & Reel (R) | Tape & Reel (T) | Tape & Reel (TR) G4 | Tape & Reel (T) |
Key Differentiators
- Integrated low-drift voltage reference eliminates external reference IC (vs ADS8381IBPFBR)
- Higher throughput than ADS8381 at 600 kSPS (vs ADS8381IBPFBR)
- Tighter linearity option available in same package (vs ADS8382IBRHPRG4)
Design Notes
The 28-VQFN exposed-pad package requires a sufficient PCB ground copper pour to maintain the datasheet thermal resistance specification. Solder the exposed thermal pad to a continuous ground plane with thermal vias to inner ground layers. Without the exposed pad soldered, junction-to-ambient thermal resistance increases significantly and the device may exceed 85C junction temperature in enclosed industrial environments. Recommended: at least 1 square inch of top-layer ground copper directly beneath the IC footprint.
Place the REFCAP bypass capacitor as close as possible to the REFCAP pin using a low-ESR ceramic (X7R or C0G dielectric). Use separate analog and digital ground planes connected at a single point near the IC, and route the AVDD and DVDD supplies separately with ferrite beads or pi-filter networks to prevent digital switching noise from coupling into the analog front end. Keep analog input traces short and matched for the differential AINP/AINM pair to minimize common-mode pickup.
Do not exceed the maximum AVDD/DVDD supply voltage specified in the datasheet. Verify the CONVST pulse width meets the minimum timing requirement (t_CONVST) - shorter pulses may cause incomplete conversion. Ensure the serial SCLK frequency does not exceed the 40 MHz maximum, and observe the data-valid timing (t_DV) relative to SCLK falling edges. For pseudo-bipolar operation, the input common-mode voltage must be biased within the supported range; floating inputs will cause incorrect readings. Use the RESET pin after power-up to initialize internal registers before the first conversion.
Compliance Information
Pb-Free (RoHS compliant) per TI datasheet. Industrial temperature range -40C to 85C. Not AEC-Q100 qualified - this is a precision industrial-grade ADC.
