參數(shù)資料
型號(hào)： MAX145BMJA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： ADC
英文描述： +2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin レMAX
中文描述： 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8
封裝： CERAMIC, DIP-8
文件頁(yè)數(shù)： 6/16頁(yè)
文件大?。?/td> 240K
代理商： MAX145BMJA
M
+2.7V, Low-Power, 2-Channel, 108ksps,
S erial 12-Bit ADCs in 8-Pin μMAX
6
_______________________________________________________________________________________
Typic al Operating Charac teristic s (c ontinued)
(V
DD
= +3.0V, V
REF
= 2.5V, 0.1μF at REF, f
SCLK
= 2.17MHz, 16 clocks/conversion cycle (108ksps), CH- = GND for MAX145, T
A
= +25°C,
unless otherwise noted.)
Pin Desc ription
External Reference Voltage Input. Sets the analog voltage range. Bypass with a 100nF capacitor close to
the device.
REF
5
Active-Low Chip-Select Input/Active-High Shutdown Input. Pulling
CS
/SHDN high puts the device into
shutdown with a maximum current of 5μA.
CS
/SHDN
6
Serial Data Output. Data changes state at SCLK’s falling edge. High impedance when
CS
/SHDN
is high.
DOUT
7
Serial Clock Input. DOUT changes on the falling edge of SCLK.
SCLK
8
Analog and Digital Ground
GND
4
Analog Input: MAX144 = single-ended (CH1); MAX145 = differential (CH-)
CH1 (CH-)
3
PIN
1
Analog Input: MAX144 = single-ended (CH0); MAX145 = differential (CH+)
CH0 (CH+)
2
Positive Supply Voltage, +2.7V to +5.25V
V
DD
FUNCTION
NAME
-0.20
-0.10
-0.15
0
-0.05
0.05
0.10
0.15
0.20
0
1024
2048
3072
4096
INTEGRAL NONLINEARITY
vs. OUTPUT CODE
M
OUTPUT CODE
I
0
0.1
0.2
0.3
0.4
0.5
2.5
3.5
3.0
4.0
4.5
5.0
5.5
INTEGRAL NONLINEARITY
vs. SUPPLY VOLTAGE
M
V
DD
(V)
I
0
0.1
0.2
0.3
0.4
0.5
INTEGRAL NONLINEARITY
vs. TEMPERATURE
M
I
TEMPERATURE (°C)
-60
-10
15
-35
40
65
90
115 140
-140
-100
-120
-60
-80
-40
-20
0
20
0
27
54
FFT PLOT
M
FREQUENCY (kHz)
A
V
DD
= +2.7V
f
IN
= 10kHz
f
SAMPLE
= 108ksps
12.0
11.0
1
10
100
EFFECTIVE NUMBER OF BITS
vs. FREQUENCY
11.2
M
FREQUENCY (kHz)
E
11.4
11.6
11.8
V
DD
= +2.7V
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