Rainbow-electronics MAXQ7670 Manual de usuario descargar pdf (Pagina 13)

MAXQ7670

Microcontroller with 10-Bit ADC,

PGA, 64KB Flash, and CAN Interface

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13

AVDD SUPPLY CURRENT

vs. ADC SAMPLING RATE

MAXQ7670 toc28

ADC SAMPLING RATE (ksps)

AVDD SUPPLY CURRENT (mA)

10 100

5.5

5.6

5.7

5.4

1 1000

PGA GAIN = 16V/V

DVDDIO DYNAMIC SUPPLY CURRENT

vs. DVDDIO SUPPLY VOLTAGE

MAXQ7670 toc29

DVDDIO SUPPLY VOLTAGE (V)

DVDDIO SUPPLY CURRENT (µA)

2.6252.5002.375

120

140

160

180

200

220

240

260

100

2.250 2.750

NOTE 6 IN

EC CHARACTERISTICS

DVDDIO DYNAMIC SUPPLY CURRENT

vs. TEMPERATURE

MAXQ7670 toc30

TEMPERATURE (°C)

DVDDIO SUPPLY CURRENT (µA)

1109580655035205-10-25

210

220

230

240

250

200

-40 125

NOTE 6 IN

EC CHARACTERISTICS

DVDDIO STATIC SUPPLY CURRENT

vs. DVDDIO SUPPLY VOLTAGE

MAXQ7670 toc31

DVDDIO SUPPLY VOLTAGE (V)

DVDDIO SUPPLY CURRENT (µA)

5.1255.004.875

60

80

100

120

140

160

40

4.750 5.250

DVDDIO STATIC SUPPLY CURRENT

vs. TEMPERATURE

MAXQ7670 toc32

TEMPERATURE (°C)

DVDDIO SUPPLY CURRENT (µA)

1109580655035205-10-25

60

80

100

120

140

160

40

-40 125

Typical Operating Characteristics (continued)

(V

DVDDIO

= 5.0V, V

AVDD

= 3.3V, V

DVDD

= 2.5V, f

SYSCLK

= 16MHz, ADC resolution = 10 bits, V

REFDAC

= 3.3V, T

A

= +25°C, unless

otherwise noted.)

DVDDIO INCREMENTAL SUPPLY CURRENT

vs. DVDDIO SUPPLY VOLTAGE

MAXQ7670 toc33

DVDDIO SUPPLY VOLTAGE (V)

DVDDIO SUPPLY CURRENT (µA)

5.1255.0004.875

1

2

3

4

5

0

4.750 5.250

BOI ENABLED

DVDDIO INCREMENTAL SUPPLY CURRENT

vs. TEMPERATURE

MAXQ7670 toc34

TEMPERATURE (°C)

DVDDIO SUPPLY CURRENT (µA)

5-10-25 503520 110958065

1

2

3

4

5

0

-40 125

BOI ENABLED

ADC SAMPLING ERROR

vs. INPUT SOURCE IMPEDANCE

SOURCE IMPEDANCE (Ω)

SAMPLING ERROR (LSB)

MAXQ7670 toc35

-5

-4

-3

-2

-1

0

1

1 10 100 1000 10,000 100,000

PGA GAIN = 16V/V

f

S

= 150.9ksps

SNR

FREQUENCY (kHz)

MAGNITUDE (dB)

MAXQ7670 toc36

0 5 10 15 20 25 30 35

-140

-120

-100

-80

-60

-40

-20

0

f

IN

= 10kHz

f

S

= 62.5ksps

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 36 37

MAXQ7670 1

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