参数资料
型号: MAXQ3120-FFN+
厂商: Maxim Integrated Products
文件页数: 23/33页
文件大小: 0K
描述: IC MCU 32KB FLASH 80-MQFP
标准包装: 66
系列: MAXQ®
核心处理器: RISC
芯体尺寸: 16-位
速度: 8MHz
连通性: UART/USART
外围设备: LCD,POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 32KB(16K x 16)
程序存储器类型: 闪存
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 2.8 V ~ 3.6 V
数据转换器: A/D 2x16b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 80-BQFP
包装: 托盘
MAXQ3120
High-Precision ADC
Mixed-Signal Microcontroller
_____________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(DVDD, AVDD = VRST to 3.6V, VREF = 1.25V (external), fHFXIN = 8MHz, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Analog Supply Voltage
AVDD
AVDD = DVDD
2.8
3.3
3.6
V
Active Analog Supply Current
IAVDD
Normal operation
2.65
3.5
mA
Power-Down Analog Supply
Current
APD2:0 = 111b
250
635
A
ANALOG-TO-DIGITAL CONVERTER DC ACCURACY
ADC Resolution
No missing codes, with software lowpass
filter (see Appendix A)
16
bits
Offset Error
Gain = 1
±5.0
mV
Gain Error
Gain = 1
±5.0
%
Gain-Error Drift
±10
ppm
Gain-Error Match
±0.5
%
DC Power-Supply Rejection
PSRR
AN0+, AN0- = AGND; AVDD = 3.0V to 3.6V
80
dB
ANALOG-TO-DIGITAL CONVERTER DYNAMIC SPECIFICATIONS
DVDD = 3.3V, AVDD = 3.3V, AN0 = 25mV,
peak-to-peak sine wave at 65Hz, gain = 16
48
57
With software lowpass filter, cutoff at 21st
harmonic (see Appendix A)
71
Signal-to-Noise Ratio
SNR
With software lowpass filter, cutoff at 7th
harmonic (see Appendix A)
74
dB
Total Harmonic Distortion
THD
DVDD = 3.3V, AVDD = 3.3V, AN0 = 25mV,
peak-to-peak sine wave at 65Hz, gain = 16
(up to 21st harmonic)
-79
-55
dB
ANALOG-TO-DIGITAL CONVERTER INPUTS
Input-Voltage Range
AN0+, AN0-; AN1+, AN1- to AGND
-1
+1
V
Gain = 1
1
Input Sampling Capacitance
(Note 3)
CIN
Channel 0
Gain = 16
16
pF
Input Sampling Rate
fS
(Note 4)
1.33
MHz
Sample Output Rate
fHFXIN /
384
sample
/ sec
Gain = 1
750
Input Impedance to AGND
(Note 5)
Gain = 16
46
k
Gain = 1
1500
Differential Input Impedance
(Note 6)
Gain = 16
93
k
Input Bandwidth (-3dB)
5.5
kHz
Reference Input Voltage
VREF
1.2
1.25
1.3
V
Reference Input Sampling
Capacitance
2pF
Reference Input Sampling Rate
fS
1.33
MHz
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