參數(shù)資料
型號: EVAL-AD7699EDZ
廠商: Analog Devices Inc
文件頁數(shù): 6/28頁
文件大小: 0K
描述: BOARD EVALUATION FOR AD7699
標(biāo)準(zhǔn)包裝: 1
系列: PulSAR®
ADC 的數(shù)量: 1
位數(shù): 16
采樣率(每秒): 500k
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
輸入范圍: 0 ~ Vdd
在以下條件下的電源(標(biāo)準(zhǔn)): 28mW @ 500kSPS
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7699
已供物品:
AD7699
Data Sheet
Rev.
| Page 14 of 28
TRANSFER FUNCTIONS
With the inputs configured for unipolar range (single ended,
COM with ground sense, or paired differentially with INx as
ground sense), the data output is straight binary.
With the inputs configured for bipolar range (COM = VREF/2 or
paired differentially with INx = VREF/2), the data outputs are
twos complement.
The ideal transfer characteristic for the AD7699 is shown in
Figure 26 and for both unipolar and bipolar ranges with the
internal 4.096 V reference.
100...000
100...001
100...010
011...101
011...110
011...111
TWOS
COMPLEMENT
STRAIGHT
BINARY
000...000
000...001
000...010
111...101
111...110
111...111
A
DC
CO
DE
ANALOG INPUT
+FSR – 1.5LSB
+FSR – 1LSB
–FSR + 1LSB
–FSR
–FSR + 0.5LSB
07354-
024
Figure 26. ADC Ideal Transfer Function
Table 6. Output Codes and Ideal Input Voltages
Description
FSR 1 LSB
Midscale + 1 LSB
2.048063 V
0x8001
62.5 μV
0x0001
Midscale
2.048 V
0x8000
0 V
0x0000
Midscale 1 LSB
2.047938 V
0x7FFF
62.5 μV
FSR + 1 LSB
62.5 μV
0x0001
2.047938 V
0x8001
FSR
0 V
0x00003
2.048 V
0x8000
1 With COM or INx = 0 V or all INx referenced to GND.
2 With COM or INx = VREF/2.
3 This is also the code for an overranged analog input ((INx+) (INx), or COM, above VREF VGND).
4 This is also the code for an underranged analog input ((INx+) (INx), or COM, below VGND).
B
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