Datasheet ADT7411 (Analog Devices) - 3

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Data Sheet ADT7411 SPECIFICATIONS
VDD = 2.7 V to 5.5 V, GND = 0 V, unless otherwise noted. Temperature ranges are −40°C to +120°C.
Table 1. Parameter1 Min Typ Max Unit Conditions/Comments
ADC DC ACCURACY Maximum VDD = 5 V. Resolution 10 Bits Total Unadjusted Error (TUE) 2 3 % of FSR VDD = 2.7 V to 5.5 V. 2 % of FSR VDD = 3.3 V (±10%). Offset Error ±0.5 % of FSR Gain Error ±2 % of FSR ADC BANDWIDTH DC Hz ANALOG INPUTS Input Voltage Range 0 2.25 V AIN1 to AIN8. C4 = 0 in Control Configuration 3. 0 VDD V AIN1 to AIN8. C4 = 1 in Control Configuration 3. DC Leakage Current ±1 µA Input Capacitance 5 20 pF Input Resistance 10 MΩ THERMAL CHARACTERISTICS Internal reference used. Averaging on. Internal Temperature Sensor Accuracy @ VDD = 3.3 V ± 10% ±1.5 °C TA = 85°C. ±0.5 ±3 °C TA = 0°C to 85°C. ±2 ±5 °C TA = −40°C to +120°C. Accuracy @ VDD = 5 V ± 5% ±2 ±3 °C TA = 0°C to 85°C. ±3 ±5 °C TA = −40°C to +120°C. Resolution 10 Bits Equivalent to 0.25°C. Long-Term Drift 0.25 °C Drift over 10 years if part is operated at 55°C. External Temperature Sensor External transistor = 2N3906. Accuracy @ VDD = 3.3 V ± 10% ±1.5 °C TA = 85°C. ±3 °C TA = 0°C to 85°C. ±5 °C TA = −40°C to +120°C. Accuracy @ VDD = 5 V ± 5% ±2 ±3 °C TA = 0°C to 85°C. ±3 ±5 °C TA = −40°C to +120°C. Resolution 10 Bits Equivalent to 0.25°C. Output Source Current 180 µA High level. 11 µA Low level. CONVERSION TIMES Single-channel mode. Slow ADC VDD/AIN 11.4 ms Averaging (16 samples) on. 712 µs Averaging off. Internal Temperature 11.4 ms Averaging (16 samples) on. 712 µs Averaging off. External Temperature 24.22 ms Averaging (16 samples) on. 1.51 ms Averaging off. Fast ADC VDD/AIN 712 µs Averaging (16 samples) on. 44.5 µs Averaging off. Internal Temperature 2.14 ms Averaging (16 samples) on. 134 µs Averaging off. External Temperature 14.25 ms Averaging (16 samples) on. 890 µs Averaging off. Rev. C | Page 3 of 36 Document Outline Features Applications Pin Configuration General Description Revision History Specifications Functional Block Diagram Absolute Maximum Ratings ESD Caution Pin Configuration and Functional Descriptions Terminology Typical Performance Characteristics Theory of Operation Power-Up Calibration Conversion Speed Functional Description Analog Inputs Single-Ended Inputs Converter Operation ADC Transfer Function Analog Input ESD Protection AIN Interrupts Functional Description—Measurement Temperature Sensor VDD Monitoring On-Chip Reference Round Robin Measurement Single-Channel Measurement Temperature Measurement Method Internal Temperature Measurement External Temperature Measurement Layout Considerations Temperature Value Format Interrupts ADT7411 Registers Interrupt Status 1 Register (Read-Only) [Address = 00h] Interrupt Status 2 Register (Read-Only) [Address = 01h] Internal Temperature Value/VDD Value Register LSBs (Read-Only) [Address = 03h] External Temperature Value and AIN1 to AIN4 Register LSBs (Read-Only) [Address = 04h] AIN5 to AIN8 Registers LSBs (Read-Only) [Address = 05h] VDD Value Register MSBs (Read-Only) [Address = 06h] Internal Temperature Value Register MSBs (Read-Only) [Address = 07h] External Temperature Value or AIN1 Register MSBs (Read-Only) [Address = 08h] AIN2 Register MSBs (Read) [Address = 09h] AIN3 Register MSBs (Read) [Address = 0Ah] AIN4 Register MSBs (Read) [Address = 0Bh] AIN5 Register MSBs (Read) [Address = 0Ch] AIN6 Register MSBs (Read) [Address = 0Dh] AIN7 Register MSBs (Read) [Address = 0Eh] AIN8 Register MSBs (Read) [Address = 0Fh] Control Configuration 1 Register (Read/Write) [Address = 18h] Control Configuration 2 Register (Read/Write) [Address = 19h] Control Configuration 3 Register (Read/Write) [Address = 1Ah] Interrupt Mask 1 Register (Read/Write) [Address = 1Dh] Interrupt Mask 2 Register (Read/Write) [Address = 1Eh] Internal Temperature Offset Register (Read/Write) [Address = 1Fh] External Temperature Offset Register (Read/Write) [Address = 20h] VDD VHIGH Limit Register (Read/Write) [Address = 23h] VDD VLOW Limit Register (Read/Write) [Address = 24h] Internal THIGH Limit Register (Read/Write) [Address = 25h] Internal TLOW Limit Register (Read/Write) [Address = 26h] External THIGH/AIN1 VHIGH Limit Register (Read/Write) [Address = 27h] External TLOW/AIN1 VLOW Limit Register (Read/Write) [Address = 28h] AIN2 VHIGH Limit Register (Read/Write) [Address = 2Bh] AIN2 VLOW Limit Register (Read/Write) [Address = 2Ch] AIN3 VHIGH Limit Register (Read/Write) [Address = 2Dh] AIN3 VLOW Limit Register (Read/Write) [Address = 2Eh] AIN4 VHIGH Limit Register (Read/Write) [Address = 2Fh] AIN4 VLOW Limit Register (Read/Write) [Address = 30h] AIN5 VHIGH Limit Register (Read/Write) [Address = 31h] AIN5 VLOW Limit Register (Read/Write) [Address = 32h] AIN6 VHIGH Limit Register (Read/Write) [Address = 33h] AIN6 VLOW Limit Register (Read/Write) [Address = 34h] AIN7 VHIGH Limit Register (Read/Write) [Address = 35h] AIN7 VLOW Limit Register (Read/Write) [Address = 36h] AIN8 VHIGH Limit Register (Read/Write) [Address = 37h] AIN8 VLOW Limit Register (Read/Write) [Address = 38h] Device ID Register (Read-Only) [Address = 4Dh] Manufacturer’s ID Register (Read-Only) [Address = 4Eh] Silicon Revision Register (Read-Only) [Address = 4Fh] SPI Lock Status Register (Read-Only) [Address = 7Fh] Serial Interface Serial Interface Selection I2C Serial Interface Writing to the ADT7411 Writing to the Address Pointer Register for a Subsequent Read Writing Data to a Register Reading Data from the ADT7411 SPI Serial Interface Write Operation Read Operation SMBus/SPI INT/INTB SMBus Alert Response Outline Dimensions Ordering Guide