Datasheet ADT7411 (Analog Devices) - 4

link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5
ADT7411 Data Sheet Parameter1 Min Typ Max Unit Conditions/Comments
ROUND ROBIN UPDATE RATE2 Time to complete one measurement cycle through all channels. Slow ADC @ 25°C Averaging On 125.4 ms AIN1 and AIN2 are selected on Pin 7 and Pin 8. Averaging Off 17.1 ms AIN1 and AIN2 are selected on Pin 7 and Pin 8. Averaging On 140.36 ms D+ and D– are selected on Pin 7 and Pin 8. Averaging Off 12.11 ms D+ and D− are selected on Pin 7 and Pin 8. Fast ADC @ 25°C Averaging On 9.26 ms AIN1 and AIN2 are selected on Pin 7 and Pin 8. Averaging Off 578.96 µs AIN1 and AIN2 are selected on Pin 7 and Pin 8. Averaging On 24.62 ms D+ and D− are selected on Pin 7 and Pin 8. Averaging Off 3.25 ms D+ and D− are selected on Pin 7 and Pin 8. ON-CHIP REFERENCE3 Reference Voltage 2.2662 2.28 2.2938 V Temperature Coefficient 80 ppm/°C DIGITAL INPUTS1, 3 Input Current ±1 µA VIN = 0 V to VDD. VIL, Input Low Voltage 0.8 V VIH, Input High Voltage 1.89 V Pin Capacitance 3 10 pF All digital inputs. SCL, SDA Glitch Rejection 50 ns Input filtering suppresses noise spikes of less than 50 ns. DIGITAL OUTPUTS Output High Voltage, VOH 2.4 V ISOURCE = ISINK = 200 µA. Output Low Voltage, VOL 0.4 V IOL = 3 mA. Output High Current, IOH 1 mA VOH = 5 V. Output Capacitance, COUT 50 pF INT/INT Output Saturation Voltage 0.8 V IOUT = 4 mA. I2C TIMING CHARACTERISTICS4, 5 Serial Clock Period, t1 2.5 µs Fast-mode I2C. See Figure 2. Data In Setup Time to SCL High, t2 50 ns Data Out Stable after SCL Low, t3 0 ns See Figure 2. SDA Low Setup Time to SCL Low 50 ns See Figure 2. (Start Condition), t4 SDA High Hold Time after SCL High 50 ns See Figure 2. (Stop Condition), t5 SDA and SCL Fall Time, t6 300 ns See Figure 2. SDA and SCL Rise Time, t7 3006 ns See Figure 2. SPI TIMING CHARACTERISTICS1, 3, 7 CS to SCLK Setup Time, t1 0 ns See Figure 3. SCLK High Pulse Width, t2 50 ns See Figure 3. SCLK Low Pulse Width, t3 50 ns See Figure 3. Data Access Time after SCLK Falling Edge, t 7 4 35 ns See Figure 3. Data Setup Time Prior to SCLK Rising Edge, t5 20 ns See Figure 3. Data Hold Time after SCLK Rising Edge, t6 0 ns See Figure 3. CS to SCLK Hold Time, t7 0 ns See Figure 3. CS to DOUT High Impedance, t8 40 ns See Figure 3. Rev. C | Page 4 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