ADS8370IBRHPR

Analog To Digital Converters (ADC) Overview

The ADS8370IBRHPR is a 16-bit, 600-kHz sampling analog-to-digital converter (ADC) featuring a pseudo-differential input and an integrated serial interface. It incorporates a capacitor-based successive approximation register (SAR) architecture with inherent sample-and-hold functionality. The device includes an onboard 4.096-V reference buffer and conversion clock. Key electrical specifications include a typical integral nonlinearity (INL) of ±0.5 LSB and differential nonlinearity (DNL) of ±0.4 LSB. It operates with a single +5 V analog supply (+VA) and a digital supply (+VBD) ranging from 2.7 V to 5.25 V. Power consumption is 110 mW at full throughput, reducing to 15 mW in Nap mode and 10 μW in power-down.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 600-kHz throughput rate and high-speed CMOS serial interface supporting up to 40 MHz clock speeds.
• Integrated 4.096-V internal voltage reference with onboard buffer and selectable output data formats (2's complement or straight binary).
• Pseudo-differential analog input range of 0 V to 4.2 V with low power dissipation: 110 mW active, 15 mW Nap mode, and 10 μW power-down.
• Pin-compatible with the 18-bit ADS8380 family, housed in a 28-lead 6x6 mm QFN package.

Analog To Digital Converters (ADC) Applications

• Medical instruments
• Optical networking systems
• Transducer interfaces
• High accuracy data acquisition systems
• Magnetometers

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix RHPR indicates tape and reel packaging with a standard quantity of 2500 units. Confirm the IB grade designation corresponds to the specified linearity limits (±1.25 LSB max INL, ±0.75 LSB max DNL). Ensure the industrial temperature range (-40°C to 85°C) aligns with system requirements. Check for current production status as ADC families may undergo lifecycle changes.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8370IBRHPR when a 16-bit resolution and 600-kHz sampling rate are required for pseudo-differential inputs. Choose this part over the ADS8370I if tighter linearity specifications (±1.25 LSB INL vs ±2 LSB) are necessary. Consider the integrated reference and clock features to reduce external component count compared to non-integrated SAR converters. Verify that the 0 V to 4.2 V input span matches the sensor signal levels.

Analog To Digital Converters (ADC) Part Context

The ADS8370 belongs to Texas Instruments' High Speed SAR Converter Family. It shares pinout compatibility with the 18-bit ADS8380 and ADS8381, facilitating design upgrades. The device utilizes a capacitor-based SAR architecture, distinguishing it from flash or pipeline ADCs in its class. It is designed for applications requiring moderate speed with high precision and low power consumption.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8370I is a lower-grade variant with relaxed linearity specs (±2 LSB INL). For higher resolution, the ADS8380 (18-bit) is pin-compatible. Other family members like the ADS8371 or ADS8383 offer different speeds or resolutions but may require schematic adjustments due to pin differences.