參數(shù)資料
型號: AD7628KPZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 8/8頁
文件大?。?/td> 0K
描述: IC DAC 8BIT DUAL MULTIPLY 20PLCC
標(biāo)準(zhǔn)包裝: 1,000
設(shè)置時間: 400ns
位數(shù): 8
轉(zhuǎn)換器數(shù)目: 2
電壓電源: 單電源
功率耗散(最大): 450mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-LCC(J 形引線)
供應(yīng)商設(shè)備封裝: 20-PLCC(9x9)
包裝: 帶卷 (TR)
輸出數(shù)目和類型: 2 電流,單極;2 電流,雙極
采樣率(每秒): 2.9M
AD7628
–8–
REV. A
MECHANICAL INFORMATION
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
C1029a–8–3/88
PRINTED
IN
U.S.A.
DIGITALLY CONTROLLED DUAL
TELEPHONE ATTENUATOR
In this configuration, the AD7628 functions as a 2-channel
digitally controlled attenuator; ideal for stereo audio and tele-
phone signal level control applications. Table IV gives input
codes vs. attenuation for a 0 dB to 15.5 dB range.
Input Code = 256
× 10 exp
Attenuation, dB
20
Figure 15. Digitally Controlled Dual Telephone Attenuator
Table IV. Attenuation vs. DAC A, DAC B Code for the
Circuit of Figure 15
DAC Input
Code in
DAC Input
Code in
Attn. dB Code
Decimal Attn. dB
Code
Decimal
0.0
1 1 1 1 1 1 1 1
255
8.0
0 1 1 0 0 1 1 0
102
0.5
1 1 1 1 0 0 1 0
242
8.5
0 1 1 0 0 0 0 0
96
1.0
1 1 1 0 0 1 0 0
228
9.0
0 1 0 1 1 0 1 1
91
1.5
1 1 0 1 0 1 1 1
215
9.5
0 1 0 1 0 1 1 0
86
2.0
1 1 0 0 1 0 1 1
203
10.0
0 1 0 1 0 0 0 1
81
2.5
1 1 0 0 0 0 0 0
192
10.5
0 1 0 0 1 1 0 0
76
3.0
1 0 1 1 0 1 0 1
181
11.0
0 1 0 0 1 0 0 0
72
3.5
1 0 1 0 1 0 1 1
171
11.5
0 1 0 0 0 1 0 0
68
4.0
1 0 1 0 0 0 1 0
162
12.0
0 1 0 0 0 0 0 0
64
4.5
1 0 0 1 1 0 0 0
152
12.5
0 0 1 1 1 1 0 1
61
5.0
1 0 0 1 0 0 0 0
144
13.0
0 0 1 1 1 0 0 1
57
5.5
1 0 0 0 1 0 0 0
136
13.5
0 0 1 1 0 1 1 0
54
6.0
1 0 0 0 0 0 0 0
128
14.0
0 0 1 1 0 0 1
51
6.5
0 1 1 1 0 0 1
121
14.5
0 0 1 1 0 0 0 0
48
7.0
0 1 1 1 0 0 1 0
114
15.0
0 0 1 0 1 1 1 0
46
7.5
0 1 1 0 1 1 0 0
108
15.5
0 0 1 0 1 0 1 1
43
20-Pin Cerdip (Q Suffix)
20-Pin Plastic DIP (N Suffix)
20-Terminal
Leadless Chip
Carrier (E Suffix)
20-Terminal
Plastic Leaded
Chip Carrier (P Suffix)
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