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參數(shù)資料
型號: AD7724ASTZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 10/16頁
文件大?。?/td> 0K
描述: IC MOD SIGMA-DELTA DUAL 48LQFP
標準包裝: 2,000
類型: 調(diào)制器
分辨率(位): 15 b
采樣率(每秒): 250k
數(shù)據(jù)接口: 串行
電壓電源: 模擬和數(shù)字
電源電壓: 2.85 V ~ 5.25 V,4.75 V ~ 5.25 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP
供應商設備封裝: 48-LQFP(7x7)
包裝: 帶卷 (TR)
REV. B
–3–
AD7724
Parameter
A Version
Unit
Test Conditions/Comments
LOGIC OUTPUTS
VOH, Output High Voltage
DVDD1 – 0.2
V min
|IOUT|
≤ 200 A
VOL, Output Low Voltage
0.4
V max
|IOUT|
≤ 1.6 mA
POWER SUPPLIES
AVDD/DVDD
4.75/5.25
V min/V max
DVDD1
2.85/5.25
V min/V max
IDD (Total for AVDD, DVDD)
Digital Inputs Equal to 0 V or DVDD
Active Mode
60
mA max
Standby Mode
20
A max
NOTES
1Operating temperature range is as follows: A Version: –40
°C to +85°C.
2Gain Error excludes reference error. The modulator gain is calibrated wrt the voltage on the REF2 pin.
3Measurement Bandwidth = 0.5
× f
MCLK; Input Level = –0.05 dB.
4When a square wave clock is used, the dynamic specifications will degrade by 1 dB typically.
Specifications subject to change without notice.
BIT STREAM
94.25kHz
FILTER 1
120dB
304.687kHz
BANDWIDTH = 94.25kHz
TRANSITION = 304.687kHz
ATTENUATION = 120dB
COEFFICIENTS = 384
DECIMATE
BY 32
FILTER 2
16-BIT
OUTPUT
94.25kHz
90dB
108.874kHz
BANDWIDTH = 94.25kHz
TRANSITION = 108.874kHz
ATTENUATION = 90dB
COEFFICIENTS = 151
DECIMATE
BY 2
Figure 1. Digital Filter (Consists of Two FIR Filters). This Filter is Implemented on the AD7722.
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