參數(shù)資料
型號: AD7716BSZ
廠商: Analog Devices Inc
文件頁數(shù): 8/16頁
文件大?。?/td> 0K
描述: IC ADC 22BIT SIGMA-DELTA 44-MQFP
標準包裝: 1
位數(shù): 22
采樣率(每秒): 2.23k
數(shù)據(jù)接口: 串行
轉(zhuǎn)換器數(shù)目: 4
功率耗散(最大): 50mW
電壓電源: 模擬和數(shù)字,雙 ±
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-QFP
供應(yīng)商設(shè)備封裝: 44-MQFP(10x10)
包裝: 托盤
輸入數(shù)目和類型: 4 個單端,雙極
REV. A
AD7716
–16–
Multibandwidth System
Some applications may require multiple AD7716’s with differ-
ent bandwidths programmed to each device. The best way to
accomplish this is shown in Figure 12. The master mode inter-
face is used for this example but the slave mode may also be
used. The example shows an 8-channel system with Device #0
in the system programmed for a 292 Hz cutoff frequency and
Device #1 programmed for a 146 Hz cutoff frequency.
CASCIN
DRDY
RESET
CASCOUT
MODE
#0
(292 Hz)
CASCIN
DRDY
RESET
MODE
#1
(146 Hz)
RESET
TFS
RFS
SCLK
SDATA
Figure 12. Multibandwidth System
The resultant output signals are also shown. Since Device #0
has a higher bandwidth it will also have a higher update rate.
The receiving processor will be getting samples from this device
at twice the rate of Device #1.
#0
#0 #1
#0
#0 #1
#0
#0 #1
RESET
DRDY #0
DRDY #1
SDATA
Figure 13. Output Signals for Figure 12
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
44-Lead PLCC
(P-44A)
0.032 (0.81)
0.026 (0.66)
0.021 (0.53)
0.013 (0.33)
0.056 (1.42)
0.042 (1.07)
0.025 (0.63)
0.015 (0.38)
0.180 (4.57)
0.165 (4.19)
0.63 (16.00)
0.59 (14.99)
0.110 (2.79)
0.085 (2.16)
0.040 (1.01)
0.025 (0.64)
0.050
(1.27)
BSC
0.656 (16.66)
0.650 (16.51)
SQ
0.695 (17.65)
0.685 (17.40)
SQ
0.048 (1.21)
0.042 (1.07)
0.048 (1.21)
0.042 (1.07)
40
6
TOP VIEW
39
29
18
17
PIN 1
IDENTIFIER
7
28
0.020
(0.50)
R
44-Lead Plastic Quad Flatpack
(S-44)
0.083 (2.11)
0.077 (1.96)
0.016 (0.41)
0.012 (0.30)
0.033 (0.84)
0.029 (0.74)
1
44
34
33
23
22
12
11
TOP VIEW
PIN 1
0.398 (10.11)
0.390 (9.91)
0.557 (14.148)
0.537 (13.640)
0.096 (2.44)
MAX
0.037 (0.94)
0.025 (0.64)
0.398 (10.11)
0.390 (9.91)
0.040 (1.02)
0.032 (0.81)
0.040 (1.02)
0.032 (0.81)
8
°
0.8
°
PRINTED
IN
U.S.A.
C1920a–2–11/95
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