參數(shù)資料
型號: AD7328BRUZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 25/37頁
文件大?。?/td> 0K
描述: IC ADC 12BIT+ SAR 8CHAN 20TSSOP
設計資源: Using AD7328 in Appls with Single-Ended Industrial-Level Signals (CN0047)
標準包裝: 1,000
系列: iCMOS®
位數(shù): 12
采樣率(每秒): 1M
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉換器數(shù)目: 1
功率耗散(最大): 30mW
電壓電源: 雙 ±
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 20-TSSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 8 個單端,單極;8 個單端,雙極;4 個差分,單極;4 個差分,雙極
AD7328
Data Sheet
Rev. C | Page 30 of 36
POWER VS. THROUGHPUT RATE
The power consumption of the AD7328 varies with the throughput
rate. The static power consumed by the AD7328 is very low, and
significant power savings can be achieved as the throughput rate is
reduced. Figure 51 and Figure 52 show the power vs. throughput
rate for the AD7328 at a VCC of 3 V and 5 V, respectively. Both
plots clearly show that the average power consumed by the AD7328
is greatly reduced as the sample frequency is reduced. This is true
whether a fixed SCLK value is used or the SCLK value is scaled
with the sampling frequency. Figure 51 and Figure 52 show the
power consumption when operating the device in normal mode
for a fixed 20 MHz SCLK and a variable SCLK that scales with
the sampling frequency.
12
0
1100
04852-
052
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
Figure 51. Power vs. Throughput Rate with 3 V VCC
20
0
1000
04852-
053
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
Figure 52. Power vs. Throughput Rate with 5 V VCC
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