
7
LTC1282
S/(N + D) vs Input Frequency and
Amplitude (Unipolar, VDD = 3V)
S/(N + D) vs Input Frequency and
Amplitude (Bipolar,
±3V Supplies)
CC
HARA TERISTICS
UW
A
TYPICALPERFOR
CE
INPUT FREQUENCY (Hz)
20
SIGNAL/(NOISE
+
DISTORTION)
(dB)
40
50
70
80
1k
100k
1M
10M
LTC1282 TPC10
0
10k
60
30
10
fSAMPLE = 160kHz
UNIPOLAR
VIN = –60dB
VIN = –20dB
VIN = 0dB
INPUT FREQUENCY (Hz)
20
SIGNAL/(NOISE
+
DISTORTION)
(dB)
40
50
70
80
1k
100k
1M
10M
LTC1282 TPC10
0
10k
60
30
10
fSAMPLE = 160kHz
VIN = –60dB
VIN = –20dB
VIN = 0dB
INPUT FREQUENCY (Hz)
–80
AMPLITUDE
(dB)
–60
–40
–20
0
100
10k
100k
1M
LTC1282 TPC12
–100
1k
–90
–70
–50
–30
–10
fSAMPLE = 160kHz
VDD = 3V
UNIPOLAR
Spurious Free Dynamic Range
vs Input Frequency
Reference Voltage
vs Load Current
S/(N +D) vs Input Frequency vs
Source Resistance (Bipolar)
LOAD CURRENT (mA)
–5
REFERENCE
VOLTAGE
(V)
1.200
1.210
1.220
–1
LTC1282 TPC13
1.190
1.180
1.170
–4
–3
–2
0
1
1.195
1.205
1.215
1.185
1.175
VDD = 3V
INPUT FREQUENCY (Hz)
20
SIGNAL/(NOISE
+
DISTORTION)
(dB)
40
50
70
80
1k
100k
1M
10M
LTC1282 TPC14
0
10k
60
30
10
VDD = 3V
VSS = –3V
BIPOLAR
RS = 50
RS = 500
RS = 1k
RS = 5k
TEMPERATURE (°C)
–50
0
MAGNITUDE
OF
OFFSET
VOLTAGE
CHANGE
(LSBs)
2
5
0
50
75
LTC1282 TPC15
1
4
3
–25
25
100
125
fSAMPLE = 140kHz
VDD = 2.7V
TEMPERATURE (°C)
–50
0
MAGNITUDE
OF
GAIN
ERROR
CHANGE
(LSBs)
2
5
0
50
75
LTC1282 TPC16
1
4
3
–25
25
100
125
fSAMPLE = 140kHz
VDD = 2.7V
Change in Integral Nonlinearity
(INL) vs Temperature
TEMPERATURE (°C)
–50
0
MAGNITUDE
OF
INTEGRAL
NONLINEARITY
CHANGE
(LSBs)
0.2
0.5
0
50
75
LTC1282 TPC17
0.1
0.4
0.3
–25
25
100
125
fSAMPLE = 140kHz
VDD = 2.7V
Change in Differential
Nonlinearity (DNL) vs Temperature
TEMPERATURE (°C)
–50
0
MAGNITUDE
OF
DIFFERENTIAL
NONLINEARITY
CHANGE
(LSBs)
0.2
0.5
0
50
75
LTC1282 TPC18
0.1
0.4
0.3
–25
25
100
125
fSAMPLE = 140kHz
VDD = 2.7V
Change in Offset Voltage
vs Temperature
Change in Gain Error
vs Temperature