CLC949ACQ datasheet(3/12 Pages) NSC

Part #	CLC949ACQ

Description	Very Low-Power, 12-Bit, 20MSPS Monolithic A/D Convertter

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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CLC949 Typical Performance Characteristics (+V

DD = + 5V, Med Bias, Fs = 20MSPS: unless specified)

Output Spectrum 1MHz

Frequency (MHz)

0

-40

0

2

4

-120

-80

10

68

-20

-60

-100

Output Spectrum 9MHz

Frequency (MHz)

0

-40

0

2

4

-120

-80

10

68

-20

-60

-100

Output Spectrum 15MHz

Frequency (MHz)

0

-40

0

2

4

-120

-80

10

68

-20

-60

-100

SNR & SFDR vs. Input Amplitude 1MHz

Input Amplitude (dBFS)

80

60

-50

-30

-10

20

0

40

SNR

SFDR

10

-40

-20

0

SNR & SFDR vs. Input Amplitude 5MHz

Input Amplitude (dBFS)

80

60

-50

-30

-10

20

0

40

SNR

SFDR

10

-40

-20

0

SNR & SFDR vs. Input Amplitude 9MHz

Input Amplitude (dBFS)

80

60

-50

-30

-10

20

0

40

SNR

SFDR

10

-40

-20

0

SNR & SFDR vs. Input Frequency

Input Frequency (MHz)

80

100k

10M

100M

50

0

60

70

1M

FS = 20MHz

SFDR (dBc)

SNR (dB)

SNR vs. Sample Rate vs. Bias

Sample Rate (MSPS)

70

60

0.1

1.0

10

40

30

50

100

Low Bias

High Bias

Medium Bias

Fin = 5MHz

SFDR vs. Sample Rate vs. Bias

Sample Rate (MSPS)

80

70

0.1

1.0

10

50

40

60

100

Low Bias

Medium Bias

High Bias

Fin = 5MHz

Two Tone Intermodulation Distortion

Frequency (MHz)

0

-40

0

2

4

-120

-80

10

68

-20

-60

-100

Integral Non-Linearity

Output Code

2.5

1.5

0

1000

2000

-2.5

0.5

3000

4000

2

1

0

-0.5

-1

-1.5

-2

Differential Non-Linearity

Output Code

1.5

0.5

0

1000

2000

-1.5

-0.5

3000

4000

1

0

-1

Pulse Settling Response

Time (ns)

4000

0

100

150

1000

0

2000

200

3000

50

SFDR vs. Input Frequency

40

°C

80

°C

60

°C

0

°C

20

°C

-20

°C

Input Frequency (MHz)

80

76

72

68

64

60

1

10

100

I/O Timing (Convert CLK & Bit Skew)

Time (ns)

400

300

0

4

16

100

0

200

20

812

Output Data

Convert

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CLC949ACQ Datasheet(PDF) 3 Page - National Semiconductor (TI)

CLC949ACQ Datasheet(HTML) 3 Page - National Semiconductor (TI)

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