参数资料
型号: AD744KR
厂商: Analog Devices Inc
文件页数: 4/12页
文件大小: 0K
描述: IC OPAMP BIFET 13MHZ PREC 8SOIC
标准包装: 98
放大器类型: J-FET
电路数: 1
转换速率: 75 V/µs
-3db带宽: 13MHz
电流 - 输入偏压: 30pA
电压 - 输入偏移: 250µV
电流 - 电源: 3.5mA
电流 - 输出 / 通道: 25mA
电压 - 电源,单路/双路(±): ±4.5 V ~ 18 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
REV.C
–12–
AD744
C00833a-0-7/00
(rev.
C)
PRINTED
IN
U.S.A.
In either case, the capacitance CX causes the system to go from
a one-pole to a two-pole response; this additional pole increases
settling time by introducing peaking or ringing in the op amp’s
output. If the value of CX can be estimated with reasonable accu-
racy, Equation 2 can be used to choose the correct value for
a small capacitor, CL, which will optimize amplifier response. If
the value of CX is not known, CL should be a variable capacitor.
As an aid to the designer, the optimum value of CL for one spe-
cific amplifier connection can be determined from the graph of
Figure 41. This graph has been produced for the case where the
AD744 is connected as in Figures 39 and 40 with a practical
minimum value for CSTRAY of 2 pF and a total CX value of 7.5 pF.
The approximate value of CL can be determined for almost any
application by solving Equation 2. For example, the AD565/
AD744 circuit of Figure 34 constrains all the variables of Equa-
tion 2 (GN = 3.25, R = 10 k
, FO = 13 MHz, and CX = 32.5 pF)
Therefore, under these conditions, CL= 10.5 pF.
VALUE OF RESISTOR –
100
VALUE
OF
CAPACITOR
C
LEAD
pF
35
0
1k
10k
100k
30
25
20
15
10
5
IN THIS REGION
CLEAD = 0pF
GN = 1 TO
GN = 1.5
GN = 2
GN = 3
GN = 1
Figure 41. Practical Values of CL vs. Resistance of R
for Various Amplifier Noise Gains
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
TO-99 (H) Package
5
4
0.034 (0.86)
0.028 (0.71)
0.045 (1.1)
0.020 (0.51)
BOTTOM VIEW
6
2
8
7
3
1
0.2 (5.1) TYP
45°
EQUALLY
SPACED
0.185 (4.70)
0.165 (4.19)
REFERENCE PLANE
0.5 (12.70)
MIN
0.019 (0.48)
0.016 (0.41)
DIA
8 LEADS
0.04 (1.0) MAX
SEATING PLANE
0.335 (8.50)
0.305 (7.75)
0.370 (9.40)
0.335 (8.50)
INSULATION
0.05 (1.27) MAX
Mini-DIP (N) Package
0.39 (9.91)
MAX
8
14
5
PIN 1
0.10 (2.54)
TYP
0.25
(6.35)
0.31
(7.87)
SEATING
PLANE
0.125 (3.18)
MIN
0.165
0.01
(4.19
0.25)
0.035
0.01
(0.89
0.25)
0.18
0.03
(4.57
0.76)
0.018
0.003
(0.46
0.08)
0.033
(0.84)
NOM
0.30 (7.62)
REF
0-15
0.011
0.003
(0.28
0.08)
Cerdip (Q) Package
1
4
85
0.310 (7.87)
0.220 (5.59)
PIN 1
0.005 (0.13)
MIN
0.055 (1.35)
MAX
0.1 (2.54) BSC
15°
0.32 (8.13)
0.29 (7.37)
0.015 (0.38)
0.008 (0.20)
SEATING
PLANE
0.20 (5.08)
MAX
0.405 (10.29) MAX
0.15
(3.81)
MIN
0.200 (5.08)
0.125 (3.18)
0.023 (0.58)
0.014 (0.36)
0.07 (1.78)
0.03 (0.76)
0.06 (1.52)
0.015 (0.38)
Small Outline (SO-8) Package
0.011
0.002
(0.269
0.03)
0.033
0.017
(0.83
0.43)
SEATING
PLANE
0.008
0.004
(0.203
0.075)
0.098
0.006
(2.49
0.23)
0.017
0.003
(0.42
0.07)
85
4
1
PIN 1
0.050 (1.27)
BSC
0.193
0.008
(4.90
0.10)
0.154
0.004
(3.91
0.10)
0.236
0.012
(6.00
0.20)
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