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LTC1278 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC1278
Description  12-Bit, 500ksps Sampling A/D Converter with Shutdown
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1278 Datasheet(HTML) 6 Page - Linear Technology

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LTC1278
INPUT FREQUENCY (Hz)
10k
–100
–80
–60
–40
–20
100k
2M
1M
LT1278 G6
–90
–70
–50
–30
–10
0
fSAMPLE = 500kHz
3RD HARMONIC
THD
2ND HARMONIC
TYPICAL PERFORMANCE CHARACTERISTICS
Spurious Free Dynamic Range vs
Input Frequency
INPUT FREQUENCY (Hz)
20
40
50
70
80
1k
100k
1M
10M
LTC1278 G10
0
10k
60
30
10
VIN = 0dB
VIN = –20dB
VIN = –60dB
fSAMPLE = 500kHz
S/(N
+ D) vs Input Frequency
and Amplitude
Distortion vs Input Frequency
INPUT FREQUENCY (Hz)
20
40
50
70
80
1k
100k
1M
10M
LTC1278 G5
0
10k
60
30
10
fSAMPLE = 500kHz
Signal-to-Noise Ratio (without
Harmonics) vs Input Frequency
INPUT FREQUENCY (Hz)
10k
–100
–80
–60
–40
–20
100k
1M
2M
LTLTC1278 G11
–90
–70
–50
–30
–10
0
fSAMPLE = 500kHz
FREQUENCY (Hz)
0
–120
–100
–80
–60
–40
–20
0
50k
100k
150k
200k
LTC1278 G8
250k
fSAMPLE = 500kHz
fIN1 = 96.80kHz
fIN2 = 101.68kHz
Intermodulation Distortion Plot
RSOURCE (Ω)
10
2500
3000
3500
4000
4500
100
1k
10k
LTC1278 G9
2000
1500
500
0
1000
Acquisition Time vs
Source Impedance
LOAD CURRENT (mA)
–5
2.405
2.410
2.415
2.420
2.425
2.430
2.435
– 4
–2
–1
2
LTC1278 G12
–3
0
1
Reference Voltage vs Load Current
RIPPLE FREQUENCY (Hz)
1k
–120
–40
–20
0
10k
100k
1M
LTC1278 G7
–60
–80
–100
fSAMPLE = 500kHz
AVDD (VRIPPLE = 1mV)
DGND (VRIPPLE = 0.1V)
VSS (VRIPPLE = 10mV)
Power Supply Feedthrough
vs Ripple Frequency
TEMPERATURE (C°)
–55
0
5
10
15
20
–25
0
25
50
LTC1278 G3
75
100
125
fSAMPLE = 500kHz
Supply Current vs Temperature



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