參數(shù)資料
型號： MAX1221BETX+T
廠商： Maxim Integrated Products
文件頁數(shù)： 4/44頁
文件大?。?/td> 0K
描述： IC ADC/DAC 12BIT W/FIFO 36TQFNEP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
類型： ADC，DAC
分辨率（位）： 12 b
采樣率（每秒）： 225k
數(shù)據(jù)接口： MICROWIRE?，QSPI?，串行，SPI?
電壓電源： 模擬和數(shù)字
電源電壓： 2.7 V ~ 5.25 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 36-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 36-TQFN 裸露焊盤（6x6）
包裝： 帶卷 (TR)
MAX1221/MAX1223/MAX1343
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
12
______________________________________________________________________________________
Typical Operating Characteristics (continued)
(AVDD = DVDD = 3V external VREF = 2.5V, fCLK = 3.6MHz (50% duty cycle), fSAMPLE = 225ksps, CLOAD = 50pF, 0.1F capacitor at
REF, TA = +25°C, unless otherwise noted.)
ADC IMD PLOT
MAX1221
toc31
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE
(dB)
150
100
50
-140
-120
-100
-80
-60
-40
-20
0
-160
0
200
fCLK = 5.24288MHz
fIN1 = 9.0kHz
fIN2 = 11.0kHz
AIN = -6dBFS
IMD = 82.99dBc
ADC CROSSTALK PLOT
MAX1221
toc32
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE
(dB)
150
100
50
-140
-120
-100
-80
-60
-40
-20
0
-160
0
200
fCLK = 5.24288MHz
fIN1 = 10.080kHz
fIN2 = 8.0801kHz
SNR = 72.00dBc
THD = 85.24dBc
ENOB = 11.65 BITS
DAC OUTPUT LOAD REGULATION
vs. OUTPUT CURRENT
MAX1221
toc33
OUTPUT CURRENT (mA)
DAC
OUTPUT
VOLTAGE
(V)
60
30
0
2.01
2.02
2.03
2.04
2.05
2.06
2.07
2.08
2.00
-30
90
DAC OUTPUT = MIDSCALE
SINKING
SOURCING
AVDD = DVDD = 5V
EXTERNAL REFERENCE = 4.096V
DAC OUTPUT LOAD REGULATION
vs. OUTPUT CURRENT
MAX1221
toc34
OUTPUT CURRENT (mA)
DAC
OUTPUT
VOLTAGE
(V)
20
10
0
-20
-10
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.21
-30
30
DAC OUTPUT = MIDSCALE
SINKING
SOURCING
GPIO OUTPUT VOLTAGE
vs. SOURCE CURRENT
MAX1221
toc35
SOURCE CURRENT (mA)
GPIO
OUTPUT
VOLTAGE
(V)
80
60
40
20
1
2
3
4
5
0
100
GPIOA0, AGPIOA1 OUTPUTS
GPIOC0, GPIOC1 OUTPUTS
AVDD = DVDD = 5V
EXTERNAL REFERENCE = 4.096V
GPIO OUTPUT VOLTAGE
vs. SOURCE CURRENT
MAX1221
toc36
SOURCE CURRENT (mA)
GPIO
OUTPUT
VOLTAGE
(V)
80
60
40
20
0.5
1.0
1.5
2.0
2.5
3.0
0
100
GPIOA0, GPIOA1 OUTPUTS
GPIOC0, GPIOC1
OUTPUTS
GPIO OUTPUT VOLTAGE
vs. SINK CURRENT
MAX1221
toc37
SINK CURRENT (mA)
GPIO
OUTPUT
VOLTAGE
(mV)
80
60
40
20
300
600
900
1200
1500
0
100
GPIOA0, GPIOA1 OUTPUTS
GPIOC0, GPIOC1
OUTPUTS
AVDD = DVDD = 5V
EXTERNAL REFERENCE = 4.096V
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