參數(shù)資料
型號: MAX5420BEUA+T
廠商: Maxim Integrated Products
文件頁數(shù): 7/9頁
文件大小: 0K
描述: IC VOLTAGE DIVIDER DGLT 8-UMAX
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
接片: 4
電阻(歐姆): 15k
電路數(shù): 1
存儲器類型: 易失
接口: 2 輸入并口
電源電壓: 4.75 V ~ 5.25 V,±0.0 V ~ 5.25 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-uMAX
包裝: 帶卷 (TR)
Switching Time and Layout Concerns
The switching time of the MAX5420/MAX5421 depends
on the capacitive loading at W. For best performance,
reduce parasitic board capacitance by minimizing the
circuit board trace from W to the op amp inverting input,
and choose an op amp with low input capacitance.
Chip Information
TRANSISTOR COUNT: 118
PROCESS: CMOS
MAX5420/MAX5421
Digitally Programmable Precision
Voltage Divider for PGAs
VOUT
+5V
MATCH_L
H
VDD
+5V
MATCH_H
L
VSS W
GND
MAX5421
VIN
MAX4493
H
W
L
GND
+5V
MAX5420
VDD
VSS
VIN
MAX4237
VOUT
Figure 3. Programmable-Gain Amplifier with Op Amp Bias-
Current Matching
Figure 4. Programmable-Gain Amplifier
R1A
R2A
R3A
L
H
R3B
R2B
R1B
RATIO = 1
RATIO = 2
RATIO = 4
RATIO = 8
W
RATIO =
R_B
R_A
1+
(
)
Figure 1. Simplified Functional Diagram
R1A
R2A
R3A
L
H
R3B
R2B
R1B
RATIO = 1
RATIO = 2
RATIO = 4
RATIO = 8
W
RATIO =
R_B
R_A
1+
(
)
0.1
F
+5V
VDD
0.1
F
-5V
VSS
GND
PULSE
GENERATOR
D1
D0
MAX5421
TEKTRONIX P6245
OSCILLOSCOPE FET
PROBE
CL < 1pF
1M
Figure 2. Switching Time Test Circuit
_______________________________________________________________________________________
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