AD7468 データシートの表示（PDF） - Analog Devices

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AD7468

1.8V; 450mW; micro-power, 8/10/12-bit ADC. For battery powered systems, madical instruments, remote data acquisition, isolated data acquisition

Analog Devices 

1.0

VDD = 1.8V

0.8

TEMP = 25°C

fIN = 50Hz

0.6 fSAMPLE = 100kSPS

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

0

512 1024 1536 2048 2560 3072 3584 4096

CODE

Figure 14. AD7466 DNL Performance

290

fSAMPLE = 100kSPS

265

TEMP = –40°C

240

TEMP = +25°C

215

190

165

140

TEMP = +85°C

115

90

65

1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8

SUPPLY VOLTAGE (V)

Figure 15. AD7466 Supply Current vs. Supply Voltage, SCLK 3.4 MHz

560

TEMP = 25°C

500

fSCLK = 3.4MHz, fSAMPLE = 200kSPS

440 fSCLK = 2.4MHz, fSAMPLE = 140kSPS

380

320

260

200

fSCLK = 1.2MHz, fSAMPLE = 50kSPS

140

80

1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8

SUPPLY VOLTAGE (V)

Figure 16. AD7466 Maximum Current vs. Supply Voltage

for Different SCLK Frequencies

AD7466/AD7467/AD7468

2.5

2.0

TEMP = +85°C

1.5

1.0

TEMP = +25°C

TEMP = –40°C

0.5

0

1.5

2.0

2.5

3.0

3.5

4.0

SUPPLY VOLTAGE (V)

Figure 17. Shutdown Current vs. Supply Voltage

1.4

TEMP = 25°C

1.2

1.0

0.8

VDD = 3.0V

VDD = 2.7V

0.6

VDD = 2.2V

0.4

0.2

VDD = 1.8V

0

0

50

100

150

200

250

THROUGHPUT (kSPS)

Figure 18. AD7466 Power Consumption vs. Throughput Rate, SCLK 3.4 MHz

Rev. C | Page 15 of 28

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