www.德州仪器.com
−140
−130
−120
−110
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
0 2000 4000 6000
增益 − db
f − 频率 − hz
fo = 1 khz,
fclk = 192 ksps,
osr = 1,
thd = −71 db,
snr = 113 dbfs,
digitizer = delta−sigma
−140
−120
−100
−80
−60
−40
−20
0
0
1000 2000 3000 4000 5000 6000
f − 频率 − hz
代号 − db
fo = 1 khz,
fs = 192 ksps
−4
−3
−2
−1
0
1
2
3
4
0 16384 32768 49152 65536
输入 代号
le − lsbs
DAC8581
SLAS481A–AUGUST2005–REVISEDAUGUST2005
typicalcharacteristics(持续)
powerspectraldensitysoftware-trimmedunit
FROMDCTO6kHzPOWERSPECTRALDENSITY
figure16.figure17.
软件-trimmedunit
LINEARITYERROR
vs
INPUTCODE
figure18.
8