LTC1400
TYPICAL PERFOR A CE CHARACTERISTICS
Differential Nonlinearity vs
Output Code
1.00
DIFFERENTIAL NONLINEARITY (LSBs)
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0
512 1024 1536 2048 2560 3072 3584 4096
OUTPUT CODE
1400 TPC01
f
SAMPLE
= 400kHz
INTEGRAL NONLINEARITY (LSBs)
SIGNAL/(NOISE + DISTORTION) (dB)
Signal-to-Noise Ratio (Without
Harmonics) vs Input Frequency
80
SPURIOUS-FREE DYNAMIC RANGE (dB)
70
SIGNAL-TO-NOISE RATIO (dB)
60
50
40
30
20
10
0
10
f
SAMPLE
= 400kHz
100
INPUT FREQUENCY (kHz)
1000
1400 TPC07
–30
–40
–50
–60
–70
–80
–90
10
100
INPUT FREQUENCY (kHz)
1000
1400 TPC08
ACQUISITION TIME (ns)
AMPLITUDE OF POWER SUPPLY FEEDTHROUGH (dB)
Reference Voltage vs
Load Current
2.435
2,430
REFERENCE VOLTAGE (V)
2.425
2.420
2.415
2.410
2.405
2.400
2.395
2.390
–8 –7 –6 –5 –4 –3 –2 –1
LOAD CURRENT (mA)
0
1
2
–30
–40
–50
–60
–70
–80
–90
1
V
CC
(V
RIPPLE
= 1mV)
10
100
RIPPLE FREQUENCY (kHz)
1000
1400 TPC07.5
SUPPLY CURRENT (mA)
U W
1400 TPC03
Integral Nonlinearity vs
Output Code
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0
512 1024 1536 2048 2560 3072 3584 4096
OUTPUT CODE
1400 TPC02
S/(N + D) vs Input Frequency
and Amplitude
80
70
60
50
40
30
20
10
0
10
V
IN
= – 60dB
f
SAMPLE
= 400kHz
100
INPUT FREQUENCY (kHz)
1000
1400 TPC06
f
SAMPLE
= 400kHz
V
IN
= 0dB
V
IN
= –20dB
Peak Harmonic or Spurious Noise
vs Input Frequency
0
–10
–20
f
SAMPLE
= 400kHz
4500
4000
3500
3000
2500
2000
1500
1000
500
0
Acquisition Time vs
Source Impedance
T
A
= 25°C
–100
10
100
1000
R
SOURCE
(Ω)
10000
1400 TPC05
Power Supply Feedthrough vs
Ripple Frequency
0
–10
–20
f
SAMPLE
= 400kHz
20
Supply Current vs Temperature
f
SAMPLE
= 400kHz
15
10
V
SS
(V
RIPPLE
= 10mV)
5
–100
0
–50 –25
0
25
50
75
TEMPERATURE (°C)
100
125
1400 TPC04
1400fa
5
LINER [ LINEAR TECHNOLOGY ]
