Datasheet
LTC1857/LTC1858/LTC1859
6
185789fa
CODE
–32768
INL (LSB)
0
0.5
1.0
0
1859 G01
–0.5
–1.0
–2.0
–16384 16384 32767
–1.5
2.0
1.5
CODE
–32768
DNL (LSB)
0
0.5
1.0
0
1859 G02
–0.5
–1.0
–2.0
–16384 16384 32767
–1.5
2.0
1.5
FREQUENCY (kHz)
01525 50
1869 G03
510
20
30 40
45
35
MAGNITUDE (dB)
–60
–40
–20
0
–80
–100
–70
–50
–30
–10
–90
–110
–130
–120
f
SAMPLE
= 100kHz
f
IN
= 1kHz
SINAD = 86.95dB
THD = –101.42dB
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1859 Typical INL Curve LTC1859 Typical DNL Curve
LTC1859 Nonaveraged
4096-Point FFT Plot
LTC1859 SINAD
vs Input Frequency
LTC1859 Total Harmonic
Distortion vs Input Frequency
LTC1859 Channel-to-Channel
Offset Error Matching vs
Temperature
LTC1859 Channel-to-Channel Gain
Error Matching vs Temperature
Internal Reference Voltage
vs Temperature
Change in REFCOMP Voltage
vs Load Current
INPUT FREQUENCY (kHz)
1
74
SINAD (dB)
78
82
90
10 100
1859 G04
86
76
80
88
84
INPUT FREQUENCY (kHz)
1
–110
TOTAL HARMONIC DISTORTION (dB)
–100
–90
–70
10 100
1859 G05
–80
TEMPERATURE (°C)
–50
–1.0
CHANNEL-TO-CHANNEL
OFFSET ERROR MATCHING (LSBs)
–0.5
0
0.5
1.0
–25 0 25 50
1959 G06
75 100
BIPOLAR MODE
UNIPOLAR MODE
TEMPERATURE (°C)
–50
–1.0
CHANNEL-TO-CHANNEL
GAIN ERROR MATCHING (LSBs)
–0.5
0
0.5
1.0
–25 0 25 50
1959 G07
75 100
BIPOLAR MODE
UNIPOLAR MODE
TEMPERATURE (°C)
–50
INTERNAL REFERENCE VOLTAGE (V)
25
75
1859 G08
–25 0 50
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
100
LOAD CURRENT (mA)
–50
–0.04
CHANGE IN REFCOMP VOLTAGE (V)
–0.02
0
0.02
0.04
–40 –30 –20 –10
1859 G09
010