WM8148 datasheet(13/43 Pages) WOLFSON

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WM8148

Production Data

WOLFSON MICROELECTRONICS LTD

PD Rev 4.0 April 1999

TYPICAL OVERALL SYSTEM PERFORMANCE

(INCLUDING CDS, PGA AND ADC BLOCKS)

DNL VS CODES

INL VS CODES

-2

-1.5

-1

-0.5

0.5

1.5

512

1024

1536

2048

2560

3072

3584

4096

Output Data Code s

Output Data Codes

512

1024

1536

2048

2560

3072

3584

4096

-2

-1.5

-1

-0.5

0.5

1.5

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1.00

2.00

3.00

4.00

5.00

512

1024

1536

2048

2560

3072

3584

4096

Output Data Codes

512

1024

1536

2048

2560

3072

3584

4096

-5.00

-4.00

-3.00

-1.00

0.00

2.00

3.00

4.00

5.00

1.00

-2.00

Figure 9 DNL Vs Output Data Codes

(MODE 1, MCLK = 32MHz, AVDD = 5V, DVDD = 3.3V)

Figure 10 INL Vs Output Data Codes

(MODE 1, MCLK = 32MHz, AVDD = 5V, DVDD = 3.3V)

GROUNDED-INPUT HISTOGRAMS

0.00%

2.85%

94.36%

2.79%

0.00%

N-2

N-1

N+1

N+2

Output Data Code

RMS noise = 0.26 LSB

0.40%

4.58%

20.90%

40.57%

26.49%

6.34%

0.63%

N-3

N-2

N-1

N+1

N+2

N+3

Output Data Code

RMS noise = 0.95 LSB

Figure 11 Unity Gain Histogram

(MODE 1, MCLK = 32MHz, GAIN = 1, AVDD = 5V,

DVDD = 3.3V)

Figure 12 Maximum Gain Histogram

(MODE 1, MCLK = 32MHz, GAIN = 7.4, AVDD = 5V,

DVDD = 3.3V)

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