THS1041_15 Datasheet, PDF (10/42 Pages) Texas Instruments – 10-Bit, 40-MSPS ANALOG-TO-DIGITAL CONVERTER WITH PGA AND CLAMP

THS1041
SLAS289C − OCTOBER 2001 − REVISED OCTOBER 2004
TYPICAL CHARACTERISTICS
TOTAL HARMONIC DISTORTION
vs
INPUT FREQUENCY
−80
Differential Input = 1 V
−75
−0.5 dBFS
−70
−6 dBFS
−65
TOTAL HARMONIC DISTORTION
vs
INPUT FREQUENCY
−80
Differential Input = 2 V
−75
−0.5 dBFS
−70
−65 ^{−6 dBFS}
−60
−55
−20 dBFS
−50
−45
−40
0
See Note
10 20 30 40 50 60 70 80
fi − Input Frequency − MHz
Figure 6
90 100
−60
−20 dBFS
−55
−50
−45
−40
0
See Note
10 20 30 40 50 60 70 80 90 100
fi − Input Frequency − MHz
Figure 7
SIGNAL-TO-NOISE RATIO
vs
INPUT FREQUENCY
61
Diff Input = 2 V
59
SE Input = 2 V
57
55 _{SE Input = 1 V}
Diff Input = 1 V
53
51
49
See Note
47
0 10 20 30 40 50 60 70 80 90 100
fi − Input Frequency − MHz
Figure 8
NOTE: AVDD = DVDD = 3 V,
fS= 40 MSPS,
Input series resistor = 25 Ω,
PGA = 1,
2-V Input: Ext Ref, REFT = 2 V, REFB = 1 V, −0.5 dBFS
1-V Input: Ext Ref, REFT = 1.75 V, REFB = 1.25 V, −0.5dBFS
SPURIOUS FREE DYNAMIC RANGE
vs
INPUT FREQUENCY
85
80
Diff Input = 2 V
75
Diff Input = 1 V
70
65
60
55
50
45
40 ^{SE Input = 2 V}
35 ^{See Note}
SE Input = 1 V
0 10 20 30 40 50 60 70 80 90 100
fi − Input Frequency − MHz
Figure 9
20-pF capacitors AIN+ to AGND and AIN− to AGND,
10
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