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TLV1562 Datasheet(PDF) 5 Page - Texas Instruments

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Part No. TLV1562
Description  2.7 V TO 5.5 V, HIGH-SPEED LOW-POWER RECONFIGURABLE ANALOG-TO-DIGITAL CONVERTER WITH 4-INPUT, DUAL S/H, PARALLEL INTERFACE, AND POWER DOWN
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TLV1562 Datasheet(HTML) 5 Page - Texas Instruments

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TLV1562
2.7 V TO 5.5 V, HIGH-SPEED LOW-POWER RECONFIGURABLE ANALOG-TO-DIGITAL
CONVERTER WITH 4-INPUT, DUAL S/H, PARALLEL INTERFACE, AND POWER DOWN
SLAS162 – SEPTEMBER 1998
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
control register
The TLV1562 is software configurable. The first two bits, MSBs (D9,8), are used to address the register set. The
rest of the 8 bits are used as data. There are two control registers, CR0 and CR1, for user configuration. All of
these register bits are written to the control register during a write cycle. A description of the control registers
and the input/output data formats are shown in Figure 1.
Pin D9
Index1
Pin D8
Index0
Pin D7
Pin D6
CR0
0
Offset Calibration Set OMS(1,0)
0,0 = Operate with calibration
0,1 = Measure system offset
1,0 = Measure internal offset
1,1 = Operate without calibration
0
0
1
Input Data Format
Pin D9
Pin D8
Pin D7
Pin D6
Pin D5
Pin D4
Pin D3
Pin D2
Pin D1
Pin D0
Output Data Format
10-Bit Conversion Result
4-Bit Conversion Result
8-Bit Conversion Result
CR1
D(5,4)
= 0,0
OD9
OD3
OD7
CR1
MSB
OD8
OD7
OD6
OD5
OD4
OD3
OD2
OD1
OD0
LSB
OD2
OD1
OD0
Z
Z
Z
Z
Z
Z
OD6
OD5
OD4
OD3
OD2
OD1
OD0
Z
Z
MSB
LSB
MSB
LSB
Conversion
Clock Select
0 = Internal
1 = External
Input Type:
0 = Single end
1 = Differential
Conversion Mode Select MS(1,0)
0,0 = Mono interrupt
0,1 = Dual interrupt
1,0 = Mono continuous
1,1 = Dual continuous
Channel Select CS(1,0)
0,0 = Ch1 or pair A
0,1 = Ch2 or pair A
1,0 = Ch3 or pair B
1,1 = Ch4 or pair B
System Offset Calibration: Short the system input to the system AGND
Internal Offset Calibration: Short the two inputs to the S/HA to AGND
0
Interrupt-Mode
Conversion
Started
0 = By RD
1 = By CSTART
Resolution Select BS(1,0)
0,0 = 10-Bit
0,1 = 4-Bit
1.0 = 8-Bit
1.1 = 12-Bit Test
0
Output Format
0 = 2’s
Complement
1 = Binary
Interrupt-Mode
Auto
Power Down
0 = Disabled
1 = Enabled
SW Power Down
0 = Normal
1 = S/W Power
Down
Register Index
Configuration Register Content
Configuration Result
CR1
D(5,4)
= 0,1
CR1
D(5,4)
= 1,0
Reference delta should be greater than 2 V when swing is reduced.
NOTE:
Z indicates bits write zero read zero back.
Pin D5
Pin D4
Pin D3
Pin D2
Pin D1
Pin D0
Figure 1. Input/Output Data Formats
NOTE:
Channel select bits CR0.(1,0), CS(1,0) are ignored when the device is in the dual (interrupt or
continuous) modes using differential inputs, since both differential input pairs are automatically
selected. CR0.0 (i.e., CS0 bit) is used to determine if channels 1 and 3 or channels 2 and 4 are
selected if single-ended input mode is used.


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