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MAX186DC/D Datasheet

  • MAX186DC/D

  • 低功耗、8通道、串行12位ADC

  • 0頁

  • MAXIM   MAXIM

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Low-Power, 8-Channel,
Serial 12-Bit ADCs
MAX186/MAX188
__________________________________________Typical Operating Characteristics
POWER-SUPPLY REJECTION
vs. TEMPERATURE
0.30
0.25
0.20
PSR (LSBs)
0.15
0.10
0.05
0.00
-0.05
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (擄C)
-40 -20 0
20 40 60 80 100 120
TEMPERATURE (擄C)
VREFADJ (V)
V
DD
= +5V 鹵5%
V
SS
= 0V or -5V
2.455
2.456
OFFSET MATCHING (LSBs)
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
CHANNEL-TO-CHANNEL OFFSET MATCHING
vs. TEMPERATURE
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0
-60 -40 -20
2.454
2.453
2.452
0 20 40 60 80 100 120 140
TEMPERATURE (擄C)
MAX186/MAX188 FFT PLOT 鈥?133kHz
20
0
-20
AMPLITUDE (dB)
-40
-60
-80
ft = 10kHz
fs = 133kHz
ft = 10kHz
f
s
= 133kHz
T
A
= +25擄C
-100
-120
-140
0
33.25kHz
FREQUENCY
66.5kHz
_____________________________________________________________Pin Description
PIN
1-8
9
NAME
CH0-CH7
V
SS
SHDN
Sampling Analog Inputs
Negative Supply Voltage. Tie to -5V 鹵5% or AGND
Three-Level Shutdown Input. Pulling
SHDN
low shuts the MAX186/MAX188 down to 10碌A (max)
supply current, otherwise the MAX186/MAX188 are fully operational. Pulling
SHDN
high puts the ref-
erence-buffer amplifier in internal compensation mode. Letting
SHDN
float puts the reference-buffer
amplifier in external compensation mode.
Reference Voltage for analog-to-digital conversion. Also, Output of the Reference Buffer Amplifier
(4.096V in the MAX186, 1.638 x REFADJ in the MAX188). Add a 4.7碌F capacitor to ground when
using external compensation mode. Also functions as an input when used with a precision external
reference.
FUNCTION
10
11
VREF
6
________________________________________________________________________________________________

MAX186DC/D PDF文件相關型號

MAX186EVKIT,MAX187BC/D

MAX186DC/D 產品屬性

  • Maxim Integrated Products

  • 1

  • 8

  • SAR

  • 133 KSPs

  • 12 bit

  • Single Ended, Differential

  • 4-Wire (SPI, Microwire, QSPI, TMS320)

  • 4.096 V

  • 6 V

  • - 0.3 V

  • 640 mW

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