LTC1857/LTC1858/LTC1859
U W
TYPICAL PERFOR A CE CHARACTERISTICS
LTC1859 Nonaveraged
4096-Point FFT Plot
LTC1859 Typical INL Curve
LTC1859 Typical DNL Curve
0
–10
–20
2.0
1.5
2.0
1.5
f
f
= 100kHz
SAMPLE
= 1kHz
IN
SINAD = 86.95dB
THD = –101.42dB
–30
1.0
1.0
–40
–50
–60
–70
0.5
0.5
0
0
–80
–90
–100
–110
–120
–130
–0.5
–1.0
–1.5
–2.0
–0.5
–1.0
–1.5
–2.0
20
–32768
–16384
0
16384
32767
–32768
–16384
0
16384
32767
0
5
10 15
25 30 35 40 45 50
CODE
CODE
FREQUENCY (kHz)
1859 TA02
1859 G02
1869 G03
LTC1859 Channel-to-Channel
Offset Error Matching vs
Temperature
LTC1859 SINAD
vs Input Frequency
LTC1859 Total Harmonic
Distortion vs Input Frequency
90
88
86
84
82
80
78
76
74
–70
–80
1.0
0.5
0
BIPOLAR MODE
–90
UNIPOLAR MODE
–0.5
–100
–110
–1.0
1
10
INPUT FREQUENCY (kHz)
100
1
10
100
–50
–25
0
25
50
75
100
INPUT FREQUENCY (kHz)
TEMPERATURE (°C)
1859 G04
1859 G05
1959 G06
LTC1859 Channel-to-Channel Gain
Error Matching vs Temperature
Internal Reference Voltage
vs Temperature
Change in REFCOMP Voltage
vs Load Current
1.0
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
0.04
0.02
0
0.5
0
UNIPOLAR MODE
BIPOLAR MODE
–0.5
–0.02
–1.0
–0.04
–50
–25
0
25
50
75
100
–25
0
50
–50 –40
–30
–20
–10
0
10
–50
75
100
25
TEMPERATURE (°C)
LOAD CURRENT (mA)
TEMPERATURE (°C)
1959 G07
1859 G08
1859 G09
185789f
6
Linear Systems [ Linear Systems ]
