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ADS1202 bảng dữ liệu(PDF) 3 Page - Texas Instruments

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tên linh kiện ADS1202
Giải thích chi tiết về linh kiện  Motor Control Current Shunt 1-Bit, 10MHz, 2nd-Order, Delta-Sigma Modulator
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ADS1202 bảng dữ liệu(HTML) 3 Page - Texas Instruments

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ADS1202
3
SBAS275B
www.ti.com
ELECTRICAL CHARACTERISTICS
Over recommended operating free-air temperature range at –40
°C to +85°C, V
DD = 5V, +In = –250mV to 250mV, –In = 0V, and MCLK = 10MHz, unless otherwise noted.
ADS1202IPW
PARAMETER
CONDITIONS
MIN
TYP(1)
MAX
UNITS
RESOLUTION
16
Bits
DC ACCURACY
Integral Nonlinearity(2)
INL
±3
±12
LSB
0.005
0.018
%
Differential Linearity(3)
DNL
±1
LSB
Input Offset(4)
VOS
±300
±1000
µV
Input Offset Drift
TCVOS
28
µV/°C
Gain Error(4)
GERR
±0.25
±2%
Gain Error Drift
TCGERR
20
ppm/
°C
Power-Supply Rejection Ratio
PSRR
4.75V < VDD < 5.25V
80
dB
ANALOG INPUT
Full-Scale Range
FSR
+In – (–In)
±320
mV
Operating Common-Mode Signal(3)
–0.1
5
V
Input Capacitance
Common-Mode
3
pF
Input Leakage Current
±1nA
Differential Input Resistance
Equivalent
28
k
Differential Input Capacitance
5pF
Common-Mode Rejection Ratio
CMRR
At DC
90
dB
VIN = ±1.25Vp-p at 50kHz
85
dB
INTERNAL VOLTAGE REFERENCE
Reference Voltage
VOUT
Scale to 320mV
2.450
2.5
2.550
V
Accuracy(4)
Scale to 320mV
±2%
Reference Temperature Drift
dVOUT/dT
±20
ppm/
°C
PSRR
80
dB
Startup Time
0.1
ms
INTERNAL CLOCK FOR MODES, 0, 1, AND 2
Clock Frequency
8
10
12
MHz
EXTERNAL CLOCK FOR MODE 3
Clock Frequency
16
20
24
MHz
AC ACCURACY
Signal-to-Noise Ratio + Distortion
SINAD
VIN = ±250mVp-p at 5kHz
70
dB
Signal-to-Noise Ratio
SNR
VIN = ±250mVp-p at 5kHz
67
70.5
dB
Total Harmonic Distortion
THD
VIN = ±250mVp-p at 5kHz
–84
dB
Spurious Free Dynamic Range
SFDR
VIN = ±250mVp-p at 5kHz
84
dB
DIGITAL INPUT
Logic Family
TTL with Schmitt Trigger
High-Level Input Voltage
VIH
2.6
VDD + 0.3
V
Low-Level Input Voltage
VIL
–0.3
0.8
V
High-Level Input Current
IIH
VI = VDD
0.005
2.5
µA
Low-Level Input Current
IIL
VI = GND
–2.5
0.005
µA
Input Capacitance
CJ
5pF
DIGITAL OUTPUT
High-Level Digital Output
VOH
VDD = 4.5V, IO = –5mA
4.6
V
VDD = 4.5V, IO = –15mA
3.9
V
Low-Level Digital Output
VOL
VDD = 4.5V, IO = 5mA
0.4
V
VDD = 4.5V, IO = 15mA
1.1
V
Output Capacitance
CO
5pF
Load Capacitance
CL
30
pF
POWER SUPPLY
Supply Voltage
VDD
4.5
5
5.5
V
Operating Supply Current
ICC
Mode 0
8
9.5
mA
Mode 3
6
7.5
mA
Power Dissipation
VDD = 5V, Mode 0
40
47.5
mW
VDD = 5V, Mode 3
30
37.5
mW
OPERATING TEMPERATURE
–40
+85
°C
NOTES: (1) All typical values are at TA = +25°C. (2) Integral nonlinearity is defined as the maximum deviation of the line through the end points of the transfer
curve for VIN+ = –250mV to +250mV, expressed either as the number of LSBs or as a percent of measured input range (500mV). (3) Ensured by design. (4)
Maximum values, including temperature drift, are ensured over the full specified temperature range.


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