參數(shù)資料
型號(hào): AD7610BSTZ
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 16-Bit, 250 kSPS, Unipolar/Bipolar Programmable Input PulSAR ADC
中文描述: 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
封裝: LEAD FREE, MO-026BBC, LQFP-48
文件頁數(shù): 17/32頁
文件大?。?/td> 591K
代理商: AD7610BSTZ
AD7610
TRANSFER FUNCTIONS
Using the OB/2C digital input or via the configuration register,
the AD7610 offers two output codings: straight binary and twos
complement. See Figure 26 and Table 7 for the ideal transfer char-
acteristic and digital output codes for the different analog input
ranges, V
IN
. Note that when using the configuration register, the
OB/2C input is a don’t care and should be tied to either high or low.
Rev. 0 | Page 17 of 32
000...000
000...001
000...010
111...101
111...110
111...111
A
ANALOG INPUT
+FSR – 1.5 LSB
+FSR – 1 LSB
–FSR + 1 LSB
–FSR
–FSR + 0.5 LSB
0
Figure 26. ADC Ideal Transfer Function
Table 7. Output Codes and Ideal Input Voltages
Description
V
IN
= 5 V
FSR 1 LSB
4.999924 V
FSR 2 LSB
4.999847 V
Midscale + 1 LSB
2.500076 V
Midscale
2.5 V
Midscale 1 LSB
2.499924 V
FSR + 1 LSB
76.3 μV
FSR
0 V
1
This is also the code for overrange analog input (V
IN+
V
IN
above V
REF
V
REFGND
).
2
This is also the code for overrange analog input (V
IN+
V
IN
below V
REF
V
REFGND
).
V
REF
= 5 V
Digital Output Code
Twos Complement
0x7FFF
1
0x7FFE
0x0001
0x0000
0xFFFF
0x8001
0x8000
2
V
IN
= 10 V
9.999847 V
9.999695 V
5.000153 V
5.000000 V
4.999847 V
152.6 μV
0 V
V
IN
= ±5 V
+4.999847 V
+4.999695 V
+152.6 μV
0 V
152.6 μV
4.999847 V
5 V
V
IN
= ±10 V
+9.999695 V
+9.999390 V
+305.2 μV
0 V
305.2 μV
9.999695 V
10 V
Straight Binary
0xFFFF
1
0xFFFE
0x8001
0x8000
0x7FFF
0x0001
0x0000
2
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