LTC2230 查看數據表（PDF） - Linear Technology
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LTC2230 Datasheet PDF : 32 Pages
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LTC2230/LTC2231
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltage values are with respect to ground with GND and OGND
wired together (unless otherwise noted).
Note 3: When these pin voltages are taken below GND or above VDD, they will
be clamped by internal diodes. This product can handle input currents of
greater than 100mA below GND or above VDD without latchup.
Note 4: VDD = 3.3V, fSAMPLE = 170MHz (LTC2230) or 135MHz (LTC2231),
LVDS outputs differential, ENC+/ENC– = 2VP-P sine wave, input range =
2VP-P with differential drive, unless otherwise noted.
Note 5: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve. The
deviation is measured from the center of the quantization band.
Note 6: Offset error is the offset voltage measured from –0.5 LSB when the
output code flickers between 00 0000 0000 and 11 1111 1111 in 2’s
complement output mode.
Note 7: Guaranteed by design, not subject to test.
Note 8: Recommended operating conditions.
Note 9: VDD = 3.3V, fSAMPLE = 170MHz (LTC2230) or 135MHz (LTC2231),
differential ENC+/ENC– = 2VP-P sine wave, input range = 1VP-P with differential
drive, output CLOAD = 5pF.
Note 10: SNR minimum and typical values are for LVDS mode. Typical values
for CMOS mode are typically 0.1dB lower.
Note 11: SFDR minimum values are for LVDS mode. Typical values are for
both LVDS and CMOS modes.
Note 12: SINAD minimum and typical values are for LVDS mode. Typical
values for CMOS mode are typically 0.1dB lower.
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2230: INL, 2V Range
1.0
0.8
0.6
0.4
0.2
0
– 0.2
– 0.4
– 0.6
– 0.8
– 1.0
0
256
512
768
OUTPUT CODE
LTC2230: SNR
vs Input Frequency, –1dB,
2V Range
63
1024
2230 G01
62
61
60
59
58
57
0 100 200 300 400 500 600
INPUT FREQUENCY (MHz)
2230 G03
6
LTC2230: DNL, 2V Range
1.0
0.8
0.6
0.4
0.2
0
– 0.2
– 0.4
– 0.6
– 0.8
– 1.0
0
256
512
768
OUTPUT CODE
LTC2230: SNR
vs Input Frequency, –1dB,
1V Range
63
1024
2230 G02
62
61
60
59
58
57
0 100 200 300 400 500 600
INPUT FREQUENCY (MHz)
2230 G04
LTC2230: Shorted Input Noise
Histogram
140000
120000
131059
100000
80000
60000
40000
20000
0
6
513
7
514
515
CODE
2230 G23
LTC2230: SFDR (HD2 and HD3)
vs Input Frequency, –1dB,
2V Range
90
85
80
75
70
65
60
55
50
45
40
0 100 200 300 400 500 600
INPUT FREQUENCY (MHz)
2230 G05
22301fb
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