TI ADS1261BQWRHMRQ1

The ADS1260-Q1 and ADS1261-Q1 (ADS126x-Q1) are precision 40kSPS ΔΣ ADCs with a PGA. These devices also include a precision voltage reference and internal fault monitors. These sensor-ready ADCs provide high-accuracy, single-chip solutions for the most demanding measurements, including weigh scales and RTDs. These ADCs incorporate an input signal multiplexer, low-noise PGA (with gains from 1 to 128), a 4th-order ΔΣ modulator, precision voltage reference, and programmable digital filter. The high-impedance PGA inputs (1GΩ) reduce measurement errors caused by sensor loading. The ADS1260-Q1 supports three differential or five single-ended inputs. The ADS1261-Q1 supports five differential or ten single-ended inputs. Integrated current sources simplify RTD measurements. The flexible digital filter is programmable for single-cycle settling conversions. Signal and reference monitors, a temperature sensor, and CRC data validation enhance data reliability. The ADS126x-Q1 are pin-compatible devices available in a 5mm×5mm VQFN package, rated for an operating temperature range of -40°C to +125°C.

• AEC-Q100 qualified for automotive applications – Temperature Grade 1: -40°C to +125°C, TA
• 24-bit high-precision ADC temperature drift: 1nV/°C, gain drift: 0.5ppm/°C, noise: 30nV RMS (20SPS, gain = 128), linearity: 2ppm
• CMOS PGA gain: 1 to 128, wide input voltage range: ±7mV to ±5V, data rate: 2.5SPS to 40kSPS
• 2.5V reference: 2ppm/°C, single-cycle settling mode, signal and reference monitor, 5V or ±2.5V supply, internal temperature sensor
• Cyclic Redundancy Check (CRC), excitation current source
• Sensor burn-out current source, four general-purpose inputs/outputs (ADS1261-Q1)
• AC excitation for bridge sensors (ADS1261-Q1), 5mm×5mm VQFN package

• High-resolution current shunt measurement in Battery Management Systems (BMS)
• Weight and pressure measurement
• Temperature measurement