参数资料
型号: MAX187
厂商: Maxim Integrated Products, Inc.
元件分类: ADC
英文描述: +5V, Low-Power, 12-Bit Serial ADCs(8.5μs转换时间,单通道,串行12位A/D转换器)
中文描述: +5V、低功耗、12位串行ADC
文件页数: 3/20页
文件大小: 177K
代理商: MAX187
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CONVERSION RATE
Conversion Time
t
CONV
t
ACQ
5.5
8.5
μs
Track/Hold Acquisition Time
1.5
μs
Throughput Rate
External clock, 4MHz, 13 clocks
75
ksps
Aperture Delay
t
APR
10
ns
Aperture J itter
<50
ps
ANALOG INPUT
Input Voltage Range
0 to V
REF
V
Input Capacitance (Note 4)
16
pF
INTERNAL REFERENCE
(MAX187 only, reference buffer enabled)
REF Output Voltage
V
REF
T
A
= +25°C
4.076
4.096
4.116
MAX187_C
4.060
4.132
T
A
= T
MIN
to T
MAX
MAX187_E
4.050
4.140
V
MAX187_M
4.040
4.150
REF Short-Circuit Current
30
mA
MAX187AC/BC
±30
±50
REF Tempco
MAX187AE/BE
±30
±60
ppm/°C
MAX187AM/BM
±30
±80
MAX187C
±30
Load Regulation (Note 5)
0mA to 0.6mA output load
1
mV
EXTERNAL REFERENCE AT REF
(Buffer disabled, V
REF
= 4.096V)
Input Voltage Range
2.50
V
DD
+ 50mV
350
V
Input Current
200
μA
Input Resistance
12
20
k
Shutdown REF Input Current
1.5
10
μA
M
+5V, Low-Power, 12-Bit S erial ADCs
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +5V ±5%; GND = 0V; unipolar input mode; 75ksps, f
CLK
= 4.0MHz, external clock (50% duty cycle); MAX187—internal
reference: V
REF
= 4.096V, 4.7μF capacitor at REF pin, or MAX189—external reference: V
REF
= 4.096V applied to REF pin, 4.7μF
capacitor at REF pin; T
A
= T
MIN
to T
MAX
; unless otherwise noted.)
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