Datasheet
Table Of Contents
- Features
- Applications
- Functional Block Diagram
- General Description
- Table of Contents
- Revision History
- Specifications
- Absolute Maximum Ratings
- Pin Configuration and Function Descriptions
- Typical Performance Characteristics
- Theory of Operation
- Serial Port Interface (SPI)
- Register Structure
- Register Descriptions
- Vendor ID Register (Address 0x00)
- ADC Data Register (Address 0x01)
- ADC Sequence Register (Address 0x03)
- Configuration Register Bank (Address 0x05)
- Digital Output Driver Subregister (Address 0x01)
- Digital I/O Function Subregister (Address 0x02)
- General Subregister (Address 0x08)
- VIN RANGE0 and VIN RANGE1 Subregisters (Address 0x10 and Address 0x11)
- ADC Sampling Mode Subregister (Address 0x12)
- VIN ALERT0 Routing and VIN ALERT1 Routing Subregisters (Address 0x13 and Address 0x14)
- VIN Filter Subregister (Address 0x15)
- Conversion Delay Control Subregister (Address 0x16)
- Temperature Sensor Subregister (Address 0x20)
- Temperature Sensor Alert Routing Subregister (Address 0x21)
- GPIO2/DAC DISABLE0 and GPIO4/DAC DISABLE1 Subregisters (Address 0x30 and Address 0x31)
- Alert Limits Register Bank (Address 0x06)
- Alert Flags Register Bank (Address 0x07)
- Minimum and Maximum Register Bank (Address 0x08)
- Offset Register Bank (Address 0x09)
- DAC Buffer Enable Register (Address 0x0A)
- GPIO Register (Address 0x0B)
- Conversion Command Register (Address 0x0E)
- ADC Conversion Result Registers, VIN0 to VIN7 (Address 0x10 to Address 0x17)
- TSENSE Conversion Result Register (Address 0x20)
- DAC Channel Registers (Address 0x30 to Address 0x33)
- ADC Conversion Control
- DAC Output Control
- Alerts and Limits
- Outline Dimensions
AD7292 Data Sheet
Rev. 0 | Page 14 of 40
–40 –20 0 20 40 60 80 100 120
ERROR (°C)
TEMPERATURE (°C)
10660-031
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
AV
DD
= DV
DD
= V
DRIVE
= 5V
10 DEVICES
Figure 28. Temperature Sensor Error vs. Temperature
0
10
20
30
40
50
60
70
80
1k 10k 100k 1M 10M
PSRR (dB)
POWER SUPPLY RIPPLE FREQUENCY (Hz)
0V TO V
REF
0V TO 2 × V
REF
0V TO 4 × V
REF
AV
DD
= 5V
DV
DD
= 3V
V
DRIVE
= 3V
f
SAMPLE
= 225kSPS
INTERNAL REFERENCE
T
A
= 25°C
10660-032
Figure 29. PSRR vs. Power Supply Ripple Frequency
4.0
4.2
4.4
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
0 100 200 300 400 500 600
TOTAL CURRENT (mA)
SAMPLING FREQUENCY (kHz)
AV
DD
= 5V, DV
DD
= 3V, V
DRIVE
= 3V, SCLK VARIED
AV
DD
= 5.25V, DV
DD
= 5.25V, V
DRIVE
= 5.25V, SCLK FIXED, 25MHz
AV
DD
= 4.75V, DV
DD
= 1.8V, V
DRIVE
= 1.8V, SCLK FIXED, 15 MHz
10660-033
Figure 30. Total Supply Current vs. Throughput Rate