Datasheet

6
LTC1408
1408fa
610kHz Unipolar Single Ended
Input Sine Wave 4096 Point FFT,
625ksps
833kHz into CH0 +, 841kHz into
CH0 –, 588ksps Bipolar Mode
4096 Point FFT
Full Scale Signal Response
Integral LinearIty End Point Fit
Differential Linearity for CH0 with
Internal 2.5V Reference,
Unipolar Mode
Integral Linearity End Point Fit for
CH0 with Internal 2.5V
Reference, Unipolar Mode
V
DD
= 3V, T
A
= 25°C
TYPICAL PERFOR A CE CHARACTERISTICS
UW
FREQUENCY(kHz)
0
–120
OUTPUT MAGNITUDE (dB)
–80
–90
–100
–110
–40
–60
–70
–50
0
–10
–20
–30
62.5 188125
1408 G10
250 313
FREQUENCY(kHz)
0
–120
MAGNITUDE (dB)
–80
–90
–100
–110
–40
–60
–70
–50
0
–10
–20
–30
50 150100
1408 G11
200 250 300
1408 G12
OUTPUT CODE
0
–1.0
DIFFERENTIAL LINEARITY (LSB)
–0.8
–0.4
–0.2
0
1.0
0.4
4096
8192
–0.6
0.6
0.8
0.2
12288
16384
OUTPUT CODE
0
–4.0
INTEGRAL LINEARITY (LSB)
–3.2
–1.6
–0.8
0
4.0
1.6
4096
8192
1408 G13
–2.4
2.4
3.2
0.8
12288
16384
OUTPUT CODE
0
–1.0
DIFFERENTIAL LINEARITY (LSB)
–0.8
–0.4
–0.2
0
1.0
0.4
4096
8192
1408 G14
–0.6
0.6
0.8
0.2
12288
16384
Differential Linearity for CH0 with
Internal 2.5V Reference,
Differential Input in Bipolar Mode
OUTPUT CODE
0
–4.0
INTEGRAL LINEARITY (LSB)
–3.2
–1.6
–0.8
0
4.0
1.6
4096
8192
1408 G15
–2.4
2.4
3.2
0.8
12288
16384
FREQUENCY (MHz)
–24
–27
MAGNITUDE (dB)
–21
–12
–15
–18
–9
–6
–3
0
3
100 1000
1408 G16
–30
10
1408 G20
FREQUENCY (Hz)
–100
CMRR (dB)
–60
–20
–40
–80
0
10k 100k 1M 10M 100M 1G
–120
100 1k
1408 G21
FREQUENCY (Hz)
–100
PSSR (dB)
–60
–20
–40
–80
0
10k 100k 1M 10M 100M 1G
–120
100 1k
CROSSTALK vs Frequency
CMRR vs Frequency