LTC1747 Datasheet, PDF (8/20 Pages) Linear Technology – 12-Bit, 80Msps Low Noise ADC

LTC1747
TYPICAL PERFOR A CE CHARACTERISTICS
SNR vs Input Frequency,
–1dB, 3.2V Range
72.5
T_A = 25°C
72.0
71.5
71.0
70.5
70.0
69.5
0
20
40
60
80 100
INPUT FREQUENCY (MHz)
1747 G25
SNR vs Sample Rate, 5MHz Input
–1dB, 3.2V Range
74.0
T_A = 25°C
73.5
73.0
72.5
72.0
71.5
71.0
70.5
70.0
0
20
40
60
80 100
SAMPLE RATE (Msps)
1747 G27
SFDR vs Sample Rate, 5MHz Input
–1dB, 3.2V Range
100
T_A = 25°C
98
96
94
92
90
88
86
84
82
80
0
20
40
60
80 100
SAMPLE RATE (Msps)
1747 G26
Supply Current (I_VDD)
vs Sample Rate
300
T_A = 25°C
290
280
270
260
250
240
230
0
20
40
60
80 100
SAMPLE RATE (Msps)
1747 G28
High Input Frequency SFDR,
–1dB, 2V Range
100
4TH OR HIGHER HARMONIC
95
90
85
80
75
2ND OR 3RD HARMONIC
70
65
60
0
50 100 150 200 250
INPUT FREQUENCY (MHz)
1747 G29
High Input Frequency SNR,
–1dB, 2V Range
70.5
70.0
69.5
69.0
68.5
68.0
67.5
67.0
0
50 100 150 200 250
INPUT FREQENCY (MHz)
1747 G30
Offset and Gain Error
vs Temperature
8
6
GAIN ERROR
4
2
OFFSET ERROR
0
–2
–4
–6
–8
– 50 –30
–10 10 30 50
TEMPERATURE (°C)
70 90
1747 G03
1747fa
8