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MCP33131 Datasheet(PDF) 18 Page - Microchip Technology

Part # MCP33131
Description  1 Msps/500 kSPS 16/14/12-Bit Single-Ended Input SAR ADC
PDF  54 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP33131 Datasheet(HTML) 18 Page - Microchip Technology

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MCP33131/MCP33121/MCP33111-XX
DS20006122A-page 18
 2018 Microchip Technology Inc.
Note:
Unless otherwise specified, all parameters apply for TA = +25°C, AVDD = 1.8V, DVIO = 3.3V,
VREF = 5V, GND = 0V, Differential Analog Input (VIN) = -1 dBFS, fIN = 10 kHz, CLOAD_SDO = 20 pF.
MCP33121-10: Sample Rate (fS) = 1 Msps, SPI Clock Input (SCLK) = 60 MHz.
MCP33121-05: Sample Rate (fS) = 500 kSPS, SPI Clock Input (SCLK) = 30 MHz.
FIGURE 3-7:
INL vs. Reference Voltage.
FIGURE 3-8:
FFT for 10 kHz Input Signal:
fS = 1 Msps, VIN = -1 dBFS, VREF = 5V.
FIGURE 3-9:
FFT for 10 kHz Input Signal:
fS = 500 kSPS, VIN = -1 dBFS, VREF = 5V.
FIGURE 3-10:
DNL vs. Reference Voltage.
FIGURE 3-11:
FFT for 10 kHz Input Signal:
fS = 1 Msps, VIN = -1 dBFS, VREF = 2.5V.
FIGURE 3-12:
FFT for 10 kHz Input Signal:
fS = 500 kSPS, VIN = -1 dBFS, VREF = 2.5V.
2
2.5
3
3.5
4
4.5
5
5.5
Reference Voltage (V)
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
Max INL (LSB)
Min INL (LSB)
0
100
200
300
400
500
Frequency (kHz)
-160
-140
-120
-100
-80
-60
-40
-20
0
V
REF
= 5V
f
s
= 1 Msps
SNR = 83.6 dBFS
SINAD = 83.6 dBFS
SFDR = 104.3 dBc
THD = -100.8 dBc
Resolution = 14-bit
MCP33121-10
0
50
100
150
200
250
Frequency (kHz)
-160
-140
-120
-100
-80
-60
-40
-20
0
V
REF
= 5V
f
s
= 0.5 Msps
SNR = 83.5 dBFS
SINAD = 83.4 dBFS
SFDR = 105.0 dBc
THD = -101.6 dBc
Resolution = 14-bit
MCP33121-05
2
2.5
3
3.5
4
4.5
5
5.5
Reference Voltage (V)
-1
-0.5
0
0.5
1
Min DNL (LSB)
Max DNL (LSB)
0
100
200
300
400
500
Frequency (kHz)
-160
-140
-120
-100
-80
-60
-40
-20
0
V
REF
= 2.5V
f
s
= 1 Msps
SNR = 80.3 dBFS
SINAD = 80.2 dBFS
SFDR = 97.9 dBc
THD = -95.8 dBc
Resolution = 14-bit
MCP33121-10
0
50
100
150
200
250
Frequency (kHz)
-160
-140
-120
-100
-80
-60
-40
-20
0
V
REF
= 2.5V
f
s
= 0.5 Msps
SNR = 80.6 dBFS
SINAD = 80.5 dBFS
SFDR = 99.4 dBc
THD = -96.4 dBc
Resolution = 14-bit
MCP33121-05



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