參數(shù)資料
型號(hào)： MAX478
廠商： Maxim Integrated Products, Inc.
英文描述： Dual, Single-Supply,Precision Op Amps(單電源，輸入失調(diào)電壓70~250μV,等效輸入噪聲電壓49nV/√Hz,增益帶寬積60KHz的運(yùn)算放大器)
中文描述： 17µA最大靜態(tài)電流、雙/四路、單電源、精密運(yùn)算放大器
文件頁(yè)數(shù)： 1/12頁(yè)
文件大小： 143K
代理商： MAX478
M
17μA Max, Dual/Quad, S ingle-S upply,
Prec ision Op Amps
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
1
2
3
4
8
7
6
5
V+
OUTB
INB-
INB+
V-
INA+
INA-
OUTA
MAX478
DIP/SO
TOP VIEW
1
2
3
4
14
13
12
11
OUTD
IND-
IND+
V-
V+
INA+
INA-
OUTA
MAX479
DIP/SO
5
6
7
10
9
8
INC+
INC-
OUTC
OUTB
INB-
INB+
A
D
B
C
A
B
_________________Pin Configurations
V2
V1
R3
R1
R2
R2
R1
+5V
V
OUT
MICROPOWER, HIGH INPUT IMPEDANCE DIFFERENTIAL
AMPLIFIER WITH VARIABLE GAIN IN 8-PIN DIP/SO
1/2MAX478
1/2MAX478
V
= (V1-V2) (1 + R1 + 2 R1)
__________Typic al Operating Circ uit
19-0127; Rev. 0; 4/93
_______________General Desc ription
The MAX478 and MAX479 are dual and quad micro-
power, precision op amps available in 8-pin and 14-pin
DIP and small-outline packages, respectively. Both
devices feature an extremely low, 17μA max supply
current per op amp, 70μV max offset voltage, 2.2μV/°C
max offset voltage drift (0.5μV/°C typ), and 250pA max
input offset current.
The MAX478 and MAX479 operate from a single sup-
ply. The input voltage range includes ground, and the
output swings to within a few millivolts of ground, which
eliminates pull-down resistors and saves power.
Both devices are optimized for single 3V and 5V sup-
ply operation, with guaranteed specifications at each
supply voltage. Specifications for ±15V operation are
also provided.
_______________________Applic ations
Battery- or Solar-Powered Systems:
Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry
Micropower Sample-and-Hold
Thermocouple Amplifier
Micropower Filters
Single Lithium Cell Powered Systems
___________________________Features
o
17μA Max Supply Current (MAX478A/MAX479A)
o
70μV Max Offset Voltage (MAX478A)
o
Single-Supply Operation:
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
No Pull-Down Resistors Required
o
Dual Op Amp in 8-Pin DIP/SO Package (MAX478),
Quad Op Amp in 14-Pin DIP/SO Package(MAX479)
o
250pA Max Input Offset Current
(MAX478A/MAX479A)
o
0.5μV/°C Offset-Voltage Drift
o
Output Sources and Sinks 5mA Load Current
______________Ordering Information
PART
TEMP. RANGE
MAX478
ACPA
0°C to+70°C
MAX478CPA
0°C to+70°C
MAX478CSA
0°C to+70°C
MAX478C/D
0°C to+70°C
MAX478EPA
-40°C to+85°C
MAX478ESA
-40°C to+85°C
MAX479
ACPD
0°C to+70°C
MAX479CPD
0°C to+70°C
MAX479CSD
0°C to+70°C
MAX479EPD
-40°C to+85°C
MAX479ESD
-40°C to+85°C
PIN-PACKAGE
8 Plastic DIP
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
14 Plastic DIP
14 Plastic DIP
14 SO
14 Plastic DIP
14 SO
*Dice are specified at T
A
= +25°C, DC parameters only.
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