AD7684BRMZ View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

AD7684BRMZ

16-Bit, 100 kSPS PulSAR, Differential ADC in MSOP

Analog Devices 

TYPICAL PERFORMANCE CHARACTERISTICS

3

POSITIVE INL = +0.83LSB

NEGATIVE INL = –1.07LSB

2

1

0

–1

–2

–3

0

16384

32768

49152

CODE

Figure 7. Integral Nonlinearity vs. Code

65536

120000

100000

94794

VDD = REF = 2.5V

80000

60000

40000

20000

17388

18557

0

0

0 151

182 0

0

FFFD FFFE FFFF 0000 0001 0002 0003 0004 0005

CODE IN HEX

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

0

–20

–40

–60

–80

–100

–120

–140

–160

–180

0

16384 POINT FFT

VDD = REF = 5V

fS = 100kSPS

fIN = 20.43kHz

10

20

30

40

50

FREQUENCY (kHz)

Figure 9. FFT Plot

AD7684

3

POSITIVE DNL = +0.9LSB

NEGATIVE DNL = –0.45LSB

2

1

0

–1

–2

–3

0

16384

32768

49152

CODE

Figure 10. Differential Nonlinearity vs. Code

65536

150000

123872

VDD = REF = 5V

100000

50000

0

0

FFFB

3050

4150

FFFC

FFFD

FFFE

CODE IN HEX

0

FFFF

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

0

–20

–40

–60

–80

–100

–120

–140

–160

–180

0

16384 POINT FFT

VDD = REF = 2.5V

fS = 100kSPS

fIN = 20.43kHz

10

20

30

40

50

FREQUENCY (kHz)

Figure 12. FFT Plot

Rev. A | Page 9 of 16

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