参数资料
型号: MAX1221BETX+T
厂商: Maxim Integrated Products
文件页数: 3/44页
文件大小: 0K
描述: IC ADC/DAC 12BIT W/FIFO 36TQFNEP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: ADC,DAC
分辨率(位): 12 b
采样率(每秒): 225k
数据接口: MICROWIRE?,QSPI?,串行,SPI?
电压电源: 模拟和数字
电源电压: 2.7 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 36-WFQFN 裸露焊盘
供应商设备封装: 36-TQFN 裸露焊盘(6x6)
包装: 带卷 (TR)
MAX1221/MAX1223/MAX1343
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
______________________________________________________________________________________
11
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.)
DAC FULL-SCALE ERROR
vs. REFERENCE VOLTAGE
MAX1221
toc22
REFERENCE VOLTAGE (V)
DAC
FULL-SCALE
ERROR
(LSB)
4
3
1
2
-0.75
-0.50
-0.25
0
0.25
0.50
0.75
1.00
-1.00
05
AVDD = DVDD = 5V
DAC FULL-SCALE ERROR
vs. REFERENCE VOLTAGE
MAX1221
toc23
REFERENCE VOLTAGE (V)
DAC
FULL-SCALE
ERROR
(LSB)
2.0
2.5
1.5
0.5
1.0
-6
-5
-4
-3
-2
-1
0
-7
0
3.0
DAC FULL-SCALE ERROR
vs. LOAD CURRENT
MAX1221
toc24
LOAD CURRENT (mA)
DAC
FULL-SCALE
ERROR
(LSB)
25
20
15
10
5
-10
-5
0
5
-15
030
AVDD = DVDD = 5V
EXTERNAL REFERENCE = 4.096V
DAC FULL-SCALE ERROR
vs. LOAD CURRENT
MAX1221
toc25
LOAD CURRENT (mA)
DAC
FULL-SCALE
ERROR
(LSB)
2.5
2.0
1.5
1.0
0.5
-10
-5
0
5
-15
0
3.0
INTERNAL REFERENCE
VOLTAGE vs. TEMPERATURE
MAX1221
toc26
TEMPERATURE (
°C)
INTERNAL
REFERENCE
VOLTAGE
(V)
60
35
10
-15
2.49
2.50
2.51
2.52
2.48
-40
85
25.1
25.0
24.9
24.8
24.7
2.5
4.0
3.0
3.5
4.5
5.0
5.5
ADC REFERENCE SUPPLY CURRENT
vs. ANALOG SUPPLY VOLTAGE
MAX1221
toc27
SUPPLY VOLTAGE (V)
ADC
REFERENCE
SUPPLY
CURRENT
A)
40.5
40.6
40.8
40.7
40.9
41.0
-40
10
-15
35
60
85
ADC REFERENCE SUPPLY
CURRENT vs. TEMPERATURE
MAX1221
toc28
TEMPERATURE (
°C)
ADC
REFERENCE
SUPPLY
CURRENT
A)
AVDD = DVDD = 5V
EXTERNAL REFERENCE = 4.096V
ADC REFERENCE SUPPLY
CURRENT vs. TEMPERATURE
MAX1221
toc29
TEMPERATURE (
°C)
ADC
REFERENCE
SUPPLY
CURRENT
A)
60
35
10
-15
24.8
24.9
25.0
25.1
24.7
-40
85
AVDD = DVDD = 3V
EXTERNAL REFERENCE = 2.5V
ADC FFT PLOT
MAX1221
toc30
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE
(dB)
150
100
50
-140
-120
-100
-80
-60
-40
-20
0
-160
0
200
fSAMPLE = 32.768kHz
fANALOG_)N = 10.080kHz
fCLK = 5.24288MHz
SINAD = 71.27dBc
SNR = 71.45dBc
THD = 85.32dBc
SFDR = 87.25dBc
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