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參數(shù)資料
| 型號： | AD817ARZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP LP HS 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 750 |
| 應(yīng)用： | 通用 |
| 電路數(shù)： | 1 |
| -3db帶寬： | 50MHz |
| 轉(zhuǎn)換速率： | 350 V/µs |
| 電流 - 電源： | 7mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | 5 V ~ 36 V，±2.5 V ~ 18 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
REV. B
–12–
AD817
HIGH SPEED DAC BUFFER
The wide bandwidth and fast settling time of the AD817 make
it a very good output buffer for high speed current output D/A
converters like the AD668. As shown in Figure 38, the op amp
establishes a summing node at ground for the DAC output. The
output voltage is determined by the amplifier’s feedback resistor
(10.24 V for a 1 k
resistor). Note that since the DAC gener-
ates a positive current to ground, the voltage at the amplifier
output will be negative. A 100
series resistor between the
noninverting amplifier input and ground minimizes the offset
effects of op amp input bias currents.
1
2
3
7
24
23
22
18
8
9
10
17
16
15
11
12
14
13
4
5
21
20
6
19
AD668
+15V
10
F
TO ANALOG
GROUND PLANE
0.1
F
1V NOMINAL
REFERENCE INPUT
10k
1k
100
AD817
ANALOG GROUND PLANE
ANALOG
OUTPUT
ANALOG
SUPPLY
GROUND
0.1
F
10
F
–15V
+5V
1k
100pF
DIGITAL
INPUTS
MSB
LSB
V
REFCOM
REFIN1
REFIN2
R
ACOM
LCOM
IBPO
V
THCOM
VTH
EE
LOAD
OUT
CC
I
Figure 38. High Speed DAC Buffer
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
8-Pin Plastic Mini-DIP
(N-8)
0.011
±0.003
(0.28
±0.08)
0.30 (7.62)
REF
15
°
0
°
PIN 1
4
5
8
1
0.25
(6.35)
0.31
(7.87)
0.10
(2.54)
BSC
SEATING
PLANE
0.035
±0.01
(0.89
±0.25)
0.18
±0.03
(4.57
±0.76)
0.033
(0.84)
NOM
0.018
±0.003
(0.46
±0.08)
0.125
(3.18)
MIN
0.165
±0.01
(4.19
±0.25)
0.39 (9.91) MAX
8-Pin SOIC
(SO-8)
0.0098 (0.25)
0.0075 (0.19)
0.0500 (1.27)
0.0160 (0.41)
8
°
0
°
0.0196 (0.50)
0.0099 (0.25)
x 45
°
PIN 1
0.1574 (4.00)
0.1497 (3.80)
0.2440 (6.20)
0.2284 (5.80)
4
5
1
8
0.0192 (0.49)
0.0138 (0.35)
0.0500
(1.27)
BSC
0.0688 (1.75)
0.0532 (1.35)
0.0098 (0.25)
0.0040 (0.10)
0.1968 (5.00)
0.1890 (4.80)
C1707b–5–6/95
PRINTED
IN
U.S.A.
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|---|---|
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