AD7684

Rev. A | Page 9 of 16

TYPICAL PERFORMANCE CHARACTERISTICS

–3

–2

–1

0

1

2

3

0

16384

32768

49152

65536

CODE

POSITIVE INL = +0.83LSB

NEGATIVE INL = –1.07LSB

Figure 7. Integral Nonlinearity vs. Code

151

94794

18557

17388

182

0

20000

40000

60000

80000

100000

120000

FFFD FFFE FFFF

0000

0001

0002

0003

0004

0005

CODE IN HEX

VDD = REF = 2.5V

0

0

0

0

Figure 8. Histogram of a DC Input at the Code Center

–

180

–

160

–

140

–

120

–

100

–

80

–

60

–

40

–

20

0

010

20

30

40

FREQUENCY (kHz)

50

16384 POINT FFT

VDD = REF = 5V

Figure 9. FFT Plot

–3

–2

–1

0

1

2

3

0

16384

32768

49152

65536

CODE

POSITIVE DNL = +0.9LSB

NEGATIVE DNL = –0.45LSB

Figure 10. Differential Nonlinearity vs. Code

123872

4150

3050

0

50000

100000

150000

FFFB

FFFC

FFFD

FFFE

FFFF

CODE IN HEX

0

0

VDD = REF = 5V

Figure 11. Histogram of a DC Input at the Code Center

–

180

–

160

–

140

–

120

–

100

–

80

–

60

–

40

–

20

0

010

20

30

40

FREQUENCY (kHz)

50

16384 POINT FFT

VDD = REF = 2.5V

Figure 12. FFT Plot