rev. 0–10–
ad5426/ad5432/ad5443
电压 (v)
5.5
门槛 电压 (v)
1.8
1.6
0
0.8
0.6
0.4
0.2
1.4
1.0
1.2
5.04.54.03.53.02.5
T
一个
= 25
C
V
IL
V
IH
tpc 28. 门槛 电压
vs. 供应 电压
频率 (hz)
sfdr (db)
0
–70
–100
50
0
–10
–60
–80
–90
–40
–50
–20
–30
100 150 200 250 300
350 400 450 500
T
一个
= 25
C
V
REF
= 3.5v
ad8038 放大
AD5443
tpc 31. wideband sfdr
f
输出
= 50 khz, 更新 = 1 mhz
频率 (hz)
sfdr (db)
0
–70
–100
12
10
–10
–60
–80
–90
–40
–50
–20
–30
14 16 18 20 22
24 26 28 30
T
一个
= 25
C
V
REF
= 3.5v
ad8038 放大
AD5443
tpc 34. narrowband (
±
50%)
sfdr f
输出
= 20 khz,
更新 = 1 mhz
f
输出
(khz)
sfdr (db)
100
80
0
50
40
60
40
20
3020100
T
一个
= 25
C
V
REF
= 3.5v
ad8038 放大
AD5443
mclk = 500khz
mclk = 200khz
mclk = 1mhz
tpc 29. wideband sfdr vs.
f
输出
频率 (ad5443)
频率 (hz)
sfdr (db)
0
–70
–100
50
0
–10
–60
–80
–90
–40
–50
–20
–30
100 150 200 250 300
350 400 450 500
T
一个
= 25
C
V
REF
= 3.5v
ad8038 放大
AD5443
tpc 32. wideband sfdr
f
输出
= 20 khz, 更新 = 1 mhz
频率 (hz)
10 15 20 25 3530
dB
0
–10
–100
–20
–30
–40
–50
–60
–70
–80
–90
T
一个
= 25
C
V
REF
= 3.5v
ad8038 放大
AD5443
tpc 35. narrowband (
±
50%)
imd, f
输出
= 20 khz, 25 khz,
更新 = 1 mhz
f
输出
(khz)
sfdr (db)
80
60
0
50
40
40
20
3020100
T
一个
= 25
C
V
REF
= 3.5v
ad8038 放大
AD5426
mclk = 1mhz
mclk = 200khz
mclk = 500khz
tpc 30. wideband sfdr vs.
f
输出
频率 (ad5426)
频率 (hz)
sfdr (db)
0
–70
–100
30
25
–10
–60
–80
–90
–40
–50
–20
–30
35 40 45 50 55
60 65 70 75
T
一个
= 25
C
V
REF
= 3.5v
ad8038 放大
AD5443
tpc 33. narrowband (
±
50%)
sfdr f
输出
= 50 khz,
更新 = 1 mhz