AD7520JN 查看數據表（PDF） - Intersil

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AD7520JN

10-Bit, 12-Bit, Multiplying D/A Converters

Intersil 

AD7520, AD7530, AD7521, AD7531

Test Circuits The following test circuits apply for the AD7520. Similar circuits are used for the AD7530, AD7521 and AD7531.

10-BIT

BINARY

COUNTER

CLOCK

VREF

+15V

BIT 1

(MSB)

BIT 10

(LSB)

4 15 16

51

RFEEDBACK

IOUT1 -

AD7520

13 3 2 IOUT2

HA2600

+

GND

10kΩ

0.01%

1MΩ

BIT 1 VREF

(LSB)

10kΩ 0.01%

12-BIT

BIT 10 REFERENCE

BIT 11

DAC

-

HA2600

+

LINEARITY

ERROR

X 100

BIT 12

VREF +10V

BIT 1

(MSB)

BIT 10

(LSB)

+15V

UNGROUNDED

SINE WAVE

GENERATOR

400Hz 1VP-P

5K 0.01%

5kΩ 0.01%

15 14 RFEEDBACK

4

5

16

1

IOUT1

-

AD7520 IOUT2 HA2600

13 3 2

+

GND

500kΩ

-

HA2600

+

FIGURE 2. NONLINEARITY

FIGURE 3. POWER SUPPLY REJECTION

+11V (ADJUST FOR VOUT = 0V)

+15V

1K

15µF

15 14

42

5

AD7520

13 3 1

IOUT2

IOUT1

100Ω

f = 1kHz

BW = 1Hz

10kΩ

QUAN

-

TECH

MODEL 134D

101ALN

+

VOUT

WAVE

ANALYZER

50kΩ 1kΩ

50V

0.1µF

FIGURE 4. NOISE

+15V

NC +15V

BIT 1 (MSB)

BIT 10 (LSB)

15 14

4

16

5

AD7520

1

13 3 2

NC

1kΩ

SCOPE

100mVP-P

1MHz

FIGURE 5. OUTPUT CAPACITANCE

VREF = 20VP-P

100kHz SINE WAVE

BIT 1 (MSB)

BIT 10 (LSB)

+15V

15 14

4

16

5

AD7520 1

13 3 2

IOUT1

IOUT2

GND

3-

HA26060

2+

VOUT

VREF

-10V

5t: 1% SETTLING (1mV)

EXTRAPOLATE 8t: 0.03% SETTLING

+15V

t = RISE TIME

BIT 1 (MSB)

+5V

0V

DIGITAL

INPUT

BIT 10 (LSB)

15 14

4

5

AD7520 +100mV

1

13 3 2 IOUT2

100Ω

GND

SCOPE

FIGURE 6. FEEDTHROUGH ERROR

FIGURE 7. OUTPUT CURRENT SETTLING TIME

10-11

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