Datasheet
Table Of Contents
- Features
- Applications
- Description
- Typical Application
- Absolute Maximum Ratings
- Pin Configuration
- Order Information
- Electrical Characteristics
- Typical Performance Characteristics
- Pin Functions
- Functional Diagram
- Timing Diagram
- Operation
- Applications Information
- Typical Applications
- Package Description
- Revision History
- Typical Application
- Related Parts

LTC2991
21
2991fd
For more information www.linear.com/LTC2991
Table 11. Temperature Measurement MSB Data Register Format
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
DV* X X D12 D11 D10 D9 D8
*Data valid is set when a new result is written into the register. Data valid is cleared
when this register is addressed (read) by the I
2
C interface.
X Unused
Table 12. Temperature Measurement LSB Data Register Format
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
D7 D6 D5 D4 D3 D2 D1 D0
Table 14. Diode Voltage Measurement LSB Data Register Format
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
D7 D6 D5 D4 D3 D2 D1 D0
Table 13. Diode Voltage Measurement MSB Data Register Format
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
DV* X X D12 D11 D10 D9 D8
*Data valid is set when a new result is written into the register. Data valid is cleared
when this register is addressed (read) by the I
2
C interface.
X Unused
Table 15. PWM Threshold Register Format
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
D7 D6 D5 D4 D3 D2 D1 D0
D7:D0 = PWM[8:1], bit 0 is located in the PWM, V
CC
and T
INT
CONTROL Register (Table 7)
Table 16. Conversion Formats
VOLTAGE FORMATS SIGN BINARY VALUE D[13:0] VOLTAGE
Single-Ended
LSB = 305.18µV = 2.5/2
13
0 11111111111111 >5
0 10110011001101 3.5000
0 01111111111111 2.5000
0 00000000000000 0.0000
1 11110000101001 –0.3000
Differential
LSB = 19.075µV = 2.5/2
17
0 11110101101111 0.300
0 10000010001111 0.159
0 00000000000000 0.0000
1 01111101110001 –0.159
1 00001010010001 –0.300
V
CC
= Result + 2.5V
LSB = 305.18µV = 2.5/2
13
0 10110011001101 V
CC
= 6.0
0 10000000000000 V
CC
= 5.0
0 00001010001111 V
CC
= 2.7
applicaTions inForMaTion