AD7992 Analog Devices, AD7992 Datasheet - Page 11

• Manufacturer Part Number: AD7992
• Description: 2-Channel, 12-Bit ADC with I2C Compatible Interface in 10-Lead MSOP
• Manufacturer: Analog Devices

Specifications of AD7992

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 79kSPS
• Interface: I²C/Ser 2-Wire,Ser
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SOP

Figure 12. Change in INL vs. Reference Voltage, V
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.8
–1.0
-0.6
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
0
0
0
Figure 11. Typical DNL, V
1.2
Figure 10. Typical INL, V
0
0
500
500
1.7
1000
1000
2.2
REFERENCE VOLTAGE (V)
3.4 MHz f
3.4 MHz f
1500
1500
2.7
DD
DD
= 2.7 V, Reference = 2.5 V, Mode1,
CODE
2000
CODE
= 2.7 V, Reference = 2.5 V, Mode 1,
2000
SCL
SCL
3.2
, 121 kSPS
, 121 kSPS
2500
2500
NEGATIVE INL
POSITIVE INL
3.7
3000
3000
DD
= 5 V, Mode 1, 121 kSPS
4.2
3500
3500
4.7
4000
4000
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Figure 13. Change in DNL vs. Reference Voltage, V
Figure 14. Shutdown Current vs. Supply Voltage, –40°C, +25°C, and +85°C
0.0007
0.0006
0.0005
0.0004
0.0003
0.0002
0.0001
Figure 15. Average Supply Current vs. I
–0.2
–0.4
–0.8
–1.0
-0.6
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
0
0
0
100
1.2
2.7
1.7
600
3.2
2.2
1100
REFERENCE VOLTAGE (V)
SCL FREQUENCY (kHz)
SUPPLY VOLTAGE (V)
3.7
2.7
1600
3.2
4.2
2
2100
C Bus Rate for V
NEGATIVE DNL
POSITIVE DNL
3.7
4.7
DD
MODE 2
VDD = 5V
2600
MODE 2
VDD = 3V
–40°C
+25°C
+85°C
= 5 V, Mode 1, 121 kSPS
4.2
MODE 1
VDD = 5V
MODE 1
VDD = 3V
DD
3100
5.2
= 3 V and 5 V
4.7
AD7992