參數(shù)資料
型號(hào): EVAL-AD7322CBZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 24/37頁(yè)
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7322
標(biāo)準(zhǔn)包裝: 1
系列: iCMOS®
ADC 的數(shù)量: 1
位數(shù): 12
采樣率(每秒): 1M
數(shù)據(jù)接口: 串行
輸入范圍: ±10 V
在以下條件下的電源(標(biāo)準(zhǔn)): 30mW @ 1MSPS
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7322
已供物品: 板,CD
相關(guān)產(chǎn)品: AD7322BRUZ-REEL-ND - IC ADC 12BIT+SAR 2CHAN 14-TSSOP
AD7322BRUZ-REEL7-ND - IC ADC 12BIT+ SAR 2CHAN 14TSSOP
AD7322BRUZ-ND - IC ADC 12BIT+ SAR 2CHAN 14TSSOP
Data Sheet
AD7322
Rev. B | Page 29 of 36
POWER vs. THROUGHPUT RATE
The power consumption of the AD7322 varies with throughput
rate. The static power consumed by the AD7322 is very low, and
a significant power savings can be achieved as the throughput
rate is reduced. Figure 48 and Figure 49 shows the power vs.
throughput rate for the AD7322 at a VCC of 3 V and 5 V,
respectively. Both plots clearly show that the average power
consumed by the AD7322 is greatly reduced as the sample
frequency is reduced. This is true whether a fixed SCLK value is
used or if it is scaled with the sampling frequency. Figure 48 and
Figure 49 show the power consumption when operating in
normal mode for a fixed 20 MHz SCLK and a variable SCLK
that scales with the sampling frequency.
12
0
1100
THROUGHPUT RATE (kSPS)
A
VER
A
G
E
PO
W
ER
(m
W
)
10
8
6
4
2
100
200
300
400
500
600
700
800
900 1000
VARIABLE SCLK
20MHz SCLK
VCC = 3V
VDD/VSS = ±12V
TA = 25°C
INTERNAL REFERENCE
04863-
052
Figure 48. Power vs. Throughput Rate with 3 V VCC
20
0
1000
THROUGHPUT RATE (kHz)
A
VER
A
G
E
PO
W
ER
(m
W
)
18
16
14
12
10
8
6
4
2
100
200
300
400
500
600
700
800
900
20MHz SCLK
VARIABLE SCLK
VCC = 5V
VDD/VSS = ±12V
TA = 25°C
INTERNAL REFERENCE
04863-
053
Figure 49. Power vs. Throughput Rate with 5 V VCC
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