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| 型号： | MCP3221A7T-E/OT |
| 厂商： | Microchip Technology |
| 文件页数： | 12/28页 |
| 文件大小： | 0K |
| 描述： | ADC 12BIT I2C INTERFACE SOT23-5 |
| 标准包装： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 22.3k |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 输入数目和类型： | 1 个单端，单极 |
| 其它名称： | MCP3221A7T-E/OTDKR |
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MCP3221
DS21732C-page 2
2006 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings
VDD...................................................................................7.0V
Analog input pin w.r.t. VSS.......... ............. -0.6V to VDD +0.6V
SDA and SCL pins w.r.t. VSS........... .........-0.6V to VDD +1.0V
Storage temperature .....................................-65°C to +150°C
Ambient temp. with power applied ................-65°C to +125°C
Maximum Junction Temperature .......... .........................150°C
ESD protection on all pins (HBM) .................................
≥ 4kV
Stresses above those listed under “Maximum ratings” may
cause permanent damage to the device. This is a stress rating
only and functional operation of the device at those or any
other conditions above those indicated in the operational list-
ings of this specification is not implied. Exposure to maximum
rating conditions for extended periods may affect device
reliability.
DC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5.0V, VSS = GND, RPU = 2 kΩ
Parameters
Sym
Min
Typ
Max
Units
Conditions
DC Accuracy
Resolution
12
bits
Integral Nonlinearity
INL
—
±0.75
±2
LSB
Differential Nonlinearity
DNL
—
±0.5
±1
LSB
No missing codes
Offset Error
—
±0.75
±2
LSB
Gain Error
—
-1
±3
LSB
Dynamic Performance
Total Harmonic Distortion
THD
—
-82
—
dB
VIN = 0.1V to 4.9V @ 1 kHz
Signal-to-Noise and Distortion
SINAD
—
72
—
dB
VIN = 0.1V to 4.9V @ 1 kHz
Spurious-Free Dynamic Range
SFDR
—
86
—
dB
VIN = 0.1V to 4.9V @ 1 kHz
Analog Input
Input Voltage Range
VSS-0.3
—
VDD+0.3
V
2.7V
≤ VDD ≤ 5.5V
Leakage Current
-1
—
+1
A
SDA/SCL (open-drain output):
Data Coding Format
Straight Binary
High-level input voltage
VIH
0.7 VDD
——
V
Low-level input voltage
VIL
—
0.3 VDD
V
Low-level output voltage
VOL
——
0.4
V
IOL = 3 mA, RPU = 1.53 kΩ
Hysteresis of Schmitt trigger inputs
VHYST
—0.05 VDD
—V
fSCL = 400 kHz only
Input leakage current
ILI
-1
—
+1
A
VIN = 0.1 VDD and 0.9 VDD
Output leakage current
ILO
-1
—
+1
A
VOUT = 0.1 VSS and
0.9 VDD
Pin capacitance
(all inputs/outputs)
CIN,
COUT
—
10
pF
TAMB = 25°C, f = 1 MHz;
(Note 2)
Bus Capacitance
CB
—
400
pF
SDA drive low, 0.4V
Note 1: “Sample time” is the time between conversions once the address byte has been sent to the converter.
Refer to Figure 5-6.
2: This parameter is periodically sampled and not 100% tested.
3: RPU = Pull-up resistor on SDA and SCL.
4: SDA and SCL = VSS to VDD at 400 kHz.
5: tACQ and tCONV are dependent on internal oscillator timing. See Figure 5-5 and Figure 5-6 for relation to
SCL.
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