参数资料
型号: AT84AD004CTD
厂商: ATMEL CORP
元件分类: ADC
英文描述: DUAL 8 BIT 500 MSPS ADC
中文描述: 2-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PQFP144
封装: 20 X 20 MM, 1.4 MM HEIGHT, LQFP-144
文件页数: 20/58页
文件大小: 1023K
代理商: AT84AD004CTD
20
AT84AD004
5390A–BDC–06/04
Digital Output Coding (Nominal Settings)
Pin Description
Table 7.
Digital Output Coding (Nominal Setting)
Differential
Analog Input
Voltage Level
Digital Output
I or Q (Binary Coding)
Out-of-range Bit
> 250 mV
> Positive full-scale + 1/2 LSB
1 1 1 1 1 1 1 1
1
250 mV
248 mV
Positive full-scale + 1/2 LSB
Positive full-scale - 1/2 LSB
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 0
0
0
1 mV
-1 mV
Bipolar zero + 1/2 LSB
Bipolar zero - 1/2 LSB
1 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1
0
0
-248 mV
-250 mV
Negative full-scale + 1/2 LSB
Negative full-scale - 1/2 LSB
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
0
0
< -250 mV
< Negative full-scale - 1/2 LSB
0 0 0 0 0 0 0 0
1
Table 8.
AT84AD004 LQFP 144 Pin Description
Symbol
Pin number
Function
GNDA, GNDD, GNDO
10, 12, 22, 24, 36, 38, 40, 42, 44, 46, 51,
54, 59, 61, 63, 65, 67, 69, 85, 87, 97, 99,
109, 111, 130, 142, 144
Ground pins. To be connected to external
ground plane
V
CCA
41, 43, 45, 60, 62, 64
Analog positive supply: 3.3V typical
V
CCD
9, 21, 37, 39, 66, 68, 88, 100, 112, 123,
141
3.3V digital supply
V
CCO
11, 23, 86, 98, 110, 143
2.25V output and 3-wire serial interface
supply
V
INI
57, 58
In-phase (+) analog input signal of the
sample & hold differential preamplifier
channel I
V
INIB
55, 56
Inverted phase (-) of analog input signal
(V
INI
)
V
INQ
47, 48
In-phase (+) analog input signal of the
sample & hold differential preamplifier
channel Q
V
INQB
49, 50
Inverted phase (-) of analog input signal
(V
INQ
)
CLKI
124
In-phase (+) clock input signal
CLKIN
125
Inverted phase (-) clock input signal
(CLKI)
CLKQ
129
In-phase (+) clock input signal
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