AD7468 Analog Devices, AD7468 Datasheet - Page 15

• Manufacturer Part Number: AD7468
• Description: 1.6 V Micro-Power 8-Bit ADC
• Manufacturer: Analog Devices

Specifications of AD7468

• Resolution (bits): 8bit
• # Chan: 1
• Sample Rate: 200kSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: SOP,SOT

Figure 15. AD7466 Supply Current vs. Supply Voltage, SCLK 3.4 MHz
–0.2
–0.4
–0.6
–0.8
290
265
240
215
190
165
140
115
560
500
440
380
320
260
200
140
1.0
0.8
0.6
0.4
0.2
90
65
80
Figure 16. AD7466 Maximum Current vs. Supply Voltage
0
1.4
1.4
0
TEMP = +85°C
TEMP = 25°C
f
V
TEMP = 25°C
f
f
f
SAMPLE
IN
SAMPLE
SCLK
DD
1.6
1.6
= 50Hz
512
= 1.8V
f
= 2.4MHz,
Figure 14. AD7466 DNL Performance
SCLK
1.8
1.8
= 100kSPS
= 100kSPS
for Different SCLK Frequencies
1024
= 3.4MHz,
2.0
2.0
f
SAMPLE
2.2
2.2
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
1536
f
SAMPLE
2.4
2.4
= 140kSPS
f
SCLK
CODE
2048
2.6
2.6
= 200kSPS
= 1.2MHz,
2.8
2.8
2560
TEMP = –40°C
3.0
3.0
f
3072
SAMPLE
3.2
3.2
TEMP = +25°C
3.4
3.4
3584
= 50kSPS
3.6 3.8
3.6
4096
3.8
Rev. C | Page 15 of 28
Figure 18. AD7466 Power Consumption vs. Throughput Rate, SCLK 3.4 MHz
2.5
2.0
1.5
1.0
0.5
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1.5
0
Figure 17. Shutdown Current vs. Supply Voltage
TEMP = 25 ° C
2.0
50
TEMP = +85 ° C
TEMP = +25 ° C
AD7466/AD7467/AD7468
SUPPLY VOLTAGE (V)
THROUGHPUT (kSPS)
100
2.5
3.0
150
TEMP = –40 ° C
200
3.5
V
V
V
V
DD
DD
DD
DD
= 3.0V
= 2.7V
= 2.2V
= 1.8V
250
4.0