AD7450BRM-REEL 查看數據表（PDF） - Analog Devices

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AD7450BRM-REEL

Differential Input, 1 MSPS 12-Bit ADC in μSOIC-8 and SO-8

Analog Devices 

AD7450–Typical Performance Characteristics

(Default Conditions: TA = 25؇C)

0

8192 POINT FFT

fSAMPLE = 1MSPS

–20 fIN = 300kHz

SINAD = 71.7dB

THD = –82.8dB

–40 PK NOISE = –85.3dB

–60

0

8192 POINT FFT

fSAMPLE = 833kSPS

–20 fIN = 300kHz

SINAD = 70.2dB

THD = –82dB

–40 PK NOISE = –87.1dB

–60

–80

–80

–100

–100

–120

0 50 100 150 200 250 300 350 400 450 500

FREQUENCY – kHz

TPC 1. Dynamic Performance at

1 MSPS with VDD = 5 V

–120

0

50 100 150 200 250 300 350

FREQUENCY – kHz

TPC 2. Dynamic Performance at

833 kSPS with VDD = 3 V

–63

–65

–67

–69 VDD = 2.7V

–71

VDD = 3.3V

–73 VDD = 4.75V

VDD = 5.25V

–75

10

100

INPUT FREQUENCY – kHz

1000

TPC 3. SINAD vs. Analog Frequency

for Various Supply Voltages

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

1024

2048

CODE

3072

4096

TPC 4. Typical Differential

Nonlinearity (DNL) VDD = 5 V

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

1024

2048

CODE

3072

4096

TPC 5. Typical Differential

Nonlinearity (DNL) VDD = 3 V

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

1024

2048

CODE

3072

4096

TPC 6. Typical Integral

Nonlinearity (INL) VDD = 5 V

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

1024

2048

CODE

3072

4096

TPC 7. Typical Integral

Nonlinearity (INL) VDD = 3 V

1.0

POSITIVE DNL

0.5

0

NEGATIVE DNL

–0.5

–1.0

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5

VREF

TPC 8. Change in DNL vs. Reference

Voltage VDD = 5 V

1.5

1.0

POSITIVE DNL

0.5

0

–0.5

NEGATIVE DNL

–1.0

0

0.6

1.2

1.8

2.4

VREF

TPC 9. Change in DNL vs. Reference

Voltage VDD = 3.3 V*

–8–

Rev. A

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