AD5165EVAL Просмотр технического описания (PDF) - Analog Devices

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AD5165EVAL

256-Position, Ultralow Power 1.8 V Logic-Level Digital Potentiometer

Analog Devices 

1000

100

VDD = VA = 5V

VDD = VA = 2.7V

10

1

0.1

0.01

0

1

2

3

4

5

VIH (1MHz) (V)

Figure 17. Supply Current vs. Digital Input Voltage

20

15

10

5

0

–5

–10

–15

–20

0

32

64

96 128 160 192 224 256

CODE (Decimal)

Figure 18. Rheostat Mode Tempco ∆RWB/∆T vs. Code

8

6

4

2

0

–2

–4

–6

–8

0

32

64

96 128 160 192 224 256

CODE (Decimal)

Figure 19. Potentiometer Mode Tempco ∆VWB/∆T vs. Code

AD5165

REF LEVEL

0.000dB

0

–6

–12

–18

–24

–30

–36

–42

–48

/DIV

6.000dB

0x80

0x40

0x20

0x10

0x08

0x04

0x02

0x01

–54

–60

1k

10k

START 1 000.000Hz

MARKER 54 089.173Hz

MAG (A/R) –9.052dB

100k

1M

STOP 1 000 000.000Hz

Figure 20. Gain vs. Frequency vs. Code, RAB = 100 kΩ

REF LEVEL

–5.000dB

–5.5

/DIV

0.500dB

–6.0

–6.5

–7.0

–7.5

–8.0

–8.5

–9.0

–9.5

–10.0

–10.5

10k

START 1 000.000Hz

100kΩ – 54kHz

R = 100kΩ

10M

STOP 1 000 000.000Hz

Figure 21. –3 dB Bandwidth @ Code = 0x80

80

CODE = 80H, VA = VDD, VB = 0V

60

PSRR @ VDD = 5V DC ± 10% p-p AC

PSRR @ VDD = 3V DC ± 10% p-p AC

40

20

0

100

1k

10k

100k

1M

FREQUENCY (Hz)

Figure 22. PSRR vs. Frequency

Rev. 0 | Page 9 of 16

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