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參數(shù)資料
型號(hào)： 5962-87701022A
廠商： ANALOG DEVICES INC
元件分類： DAC
英文描述： DUAL, PARALLEL, 8 BITS INPUT LOADING, 0.18 us SETTLING TIME, 8-BIT DAC, CQCC20
封裝： CERAMIC, LCC-20
文件頁(yè)數(shù)： 9/10頁(yè)
文件大小： 196K
代理商： 5962-87701022A
AD7528
REV. B
–8–
C681e–0–9/98
PRINTED
IN
U.S.A.
DIGITALLY CONTROLLED DUAL TELEPHONE
ATTENUATOR
In this configuration the AD7528 functions as a 2-channel digi-
tally controlled attenuator. Ideal for stereo audio and telephone
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
VIN B
VOUT A
VIN A
DATA BUS
DAC A/DAC B
CS
WR
AD7528
DB0
DB7
DAC A
DAC B
VDD
VOUT B
A1
A2
SUGGESTED
OP AMP: AD644
Figure 15. Digitally Controlled Dual Telephone Attenuator
Table IV. Attenuation vs. DAC A, DAC B Code for the Circuit
of Figure 15
Attn. DAC Input
Code In
Attn. DAC Input
Code In
dB
Code
Decimal
dB
Code
Decimal
0.0
1 1 1 1 1 1 1 1
255
88.0
0 1 1 0 0 1 1 0
102
0.5
1 1 1 1 0 0 1 0
242
88.5
0 1 1 0 0 0 0 0
96
1.0
1 1 1 0 0 1 0 0
228
89.0
0 1 0 1 1 0 1 1
91
1.5
1 1 0 1 0 1 1 1
215
89.5
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 1
51
6.5
0 1 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
For further applications information the reader is referred to
Analog Devices Application Note on the AD7528.
20-Lead Cerdip (Q-20)
0.97 (24.64)
0.935 (23.75)
SEATING
PLANE
0.02 (0.5)
0.016 (0.41)
0.07 (1.78)
0.05 (1.27)
0.15 (3.8)
0.125 (3.18)
0.20 (5.0)
0.14 (3.56)
0.11 (2.79)
0.09 (2.28)
20
110
11
0.28 (7.11)
0.24 (6.1)
PIN 1
0.14 (3.56)
0.125 (3.17)
15
0
0.32 (8.128)
0.29 (7.366)
0.011 (0.28)
0.009 (0.23)
LEAD NO. 1 IDENTIFIED BY DOT OR NOTCH
LEADS ARE SOLDER OR TIN-PLATED KOVAR OR ALLOY 42
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
20-Lead Plastic DIP (N-20)
SEATING
PLANE
0.021 (0.533)
0.015 (0.381)
0.065 (1.66)
0.045 (1.15)
0.11 (2.79)
0.09 (2.28)
0.145 (3.683)
MIN
0.125 (3.175)
MIN
20
110
11
PIN 1
1.07 (27.18) MAX
0.255 (6.477)
0.245 (6.223)
0.32 (8.128)
0.30 (7.62)
0.011 (0.28)
0.009 (0.23)
0.135 (3.429)
0.125 (3.17)
15
0
LEAD NO. 1 IDENTIFIED BY DOT OR NOTCH
LEADS ARE SOLDER OR TIN-PLATED KOVAR OR ALLOY 42
20-Lead SOIC (R-20)
SEATING
PLANE
0.0118 (0.30)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
0.1043 (2.65)
0.0926 (2.35)
0.0500
(1.27)
BSC
0.0125 (0.32)
0.0091 (0.23)
0.0500 (1.27)
0.0157 (0.40)
8
0
0.0291 (0.74)
0.0098 (0.25)
45
11
20
10
1
0.5118 (13.00)
0.4961 (12.60)
0.4193 (10.65)
0.3937 (10.00)
0.2992 (7.60)
0.2914 (7.40)
PIN 1
20-Lead Plastic Leaded Chip Carrier (P-20A)
0.021 (0.53)
0.013 (0.33)
0.032 (0.81)
0.026 (0.66)
0.180 (4.47)
0.165 (4.19)
0.12 (3.05)
0.09 (2.29)
0.020 (0.51) MIN
0.025 (0.64)
MIN
0.060 (1.53)
MIN
3
PIN 1
IDENTIFIER
4
19
18
8
9
14
13
TOP VIEW
(PINS DOWN)
0.356 (9.04)
0.350 (8.89)
SQ
0.048 (1.21)
0.042 (1.07)
0.02
(0.51)
MAX
0.050
(1.27)
BSC
0.02 (0.51)
MAX
0.395 (10.02)
0.385 (9.78)
SQ
相關(guān)PDF資料
PDF描述
5962-87701032X DUAL, PARALLEL, 8 BITS INPUT LOADING, 0.18 us SETTLING TIME, 8-BIT DAC, CQCC20
5962-8770101RX DUAL, PARALLEL, 8 BITS INPUT LOADING, 0.18 us SETTLING TIME, 8-BIT DAC, CDIP20
5962-8770102RX DUAL, PARALLEL, 8 BITS INPUT LOADING, 0.18 us SETTLING TIME, 8-BIT DAC, CDIP20
5962-87701022X DUAL, PARALLEL, 8 BITS INPUT LOADING, 0.18 us SETTLING TIME, 8-BIT DAC, CQCC20
5962-8770103RX DUAL, PARALLEL, 8 BITS INPUT LOADING, 0.18 us SETTLING TIME, 8-BIT DAC, CDIP20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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59628770103RA 制造商:AD 功能描述:AD7528UQ/883B
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5962-87702012C 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
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