參數(shù)資料
型號(hào)： ADS8519IRHBR
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 3-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32
封裝： 5 X 5 MM, QFN-32
文件頁(yè)數(shù)： 11/25頁(yè)
文件大?。?/td> 396K
代理商： ADS8519IRHBR
www.ti.com
PRODUCTPREVIEW
SLAS462 – JUNE 2007
Table 3. Input Range Connections (see Figure 25 and Figure 26 for complete
information)
ANALOG
CONNECT
CONNECT R1IN TO
CONNECT R2IN TO
IMPEDANCE
INPUT RANGE
R3 TO
±10 V
VIN
AGND
CAP
8.88 k
±10 V
AGND
VIN
CAP
8.88 k
±5 V
VIN
CAP
6.08 k
0 V to 8.192 V
AGND
VIN
5.95 k
Table 4. Control Truth Table
SPECIFIC FUNCTION
CS
R/C
BUSY
EXT/INT
DATACLK
PWRD
SB/BTC
OPERATION
Initiate conversion and
1 > 0
0
1
0
Output
0
x
Initiates conversion n. Data from conversion n - 1
output data using internal
clocked out on DATA synchronized to 16 clock
0
1 > 0
1
0
Output
0
x
clock
pulses output on DATACLK.
1 > 0
0
1
Input
0
x
Initiates conversion n.
0
1 > 0
1
Input
0
x
Initiates conversion n.
Initiate conversion and
1 > 0
1
Input
x
Outputs data with or without SYNC pulse. See
output data using external
section Reading Data.
clock
1 > 0
1
0
1
Input
0
x
Outputs data with or without SYNC pulse. See
section Reading Data.
0
0 > 1
0
1
Input
0
x
No actions
0
0 > 1
x
0
x
This is an acceptable condition.
x
0
x
Analog circuitry powered. Conversion can
proceed..
Power down
x
1
x
Analog circuitry disabled. Data from previous
conversion maintained in output registers.
x
0
Serial data is output in binary 2s complement
format.
Selecting output format
x
1
Serial data is output in straight binary format.
Table 5. Output Codes and Ideal Input Voltages
DIGITAL OUTPUT
BINARY 2's
STRAIGHT
DESCRIPTION
ANALOG INPUT
COMPLEMENTS
BINARY
(SB/BTC LOW)
(SB/BTC HIGH)
BINARY CODE
HEX CODE
BINARY CODE
HEX CODE
Full-scale range
±10
±5
0 V to 8.192 V
Least significant
305
μV
153
μV
125
μV
bit (LSB)
Full scale
9.999695 V
4.999847 V
8.191875 V
0111 1111 1111 1111
7FFF
1111 1111 1111 1111
FFFF
(FS - 1LSB)
Midscale
0 V
4.096 V
0000 0000 0000 0000
0000
1000 0000 0000 0000
8000
One LSB below
-305
μV
153
μV
4.095975 V
1111 1111 1111 1111
FFFF
0111 1111 1111 1111
7FFF
midscale
-Full scale
-10 V
-5 V
0 V
1000 0000 0000 0000
8000
0000 0000 0000 0000
0000
Copyright 2007, Texas Instruments Incorporated
19
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