參數(shù)資料
型號(hào)： LTC2221CUP#PBF
廠商： Linear Technology
文件頁(yè)數(shù)： 29/32頁(yè)
文件大?。?/td> 0K
描述： IC ADC 12-BIT 135MSPS 64-QFN
標(biāo)準(zhǔn)包裝： 40
位數(shù)： 12
采樣率（每秒）： 135M
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 931mW
電壓電源： 單電源
工作溫度： 0°C ~ 70°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 64-WFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 64-QFN（9x9）
包裝： 管件
輸入數(shù)目和類(lèi)型： 1 個(gè)單端，雙極; 1 個(gè)差分，雙極
LTC2220/LTC2221
6
22201fa
INPUT FREQUENCY (MHz)
0
SNR
(dBFS)
70
69
68
67
66
65
64
63
62
61
60
600
500
400
2220 G04
SNR
(dBFS)
70
69
68
67
66
65
64
63
62
61
60
100
200
300
INPUT FREQUENCY (MHz)
0
600
500
400
100
200
300
0
600
500
400
100
200
300
2220 G05
INPUT FREQUENCY (MHz)
SFDR
(dBFS)
80
90
100
2220 G06
70
60
40
50
OUTPUT CODE
0
ERROR
(LSB)
4096
2220 G01
1024
2048
3072
0
4096
1024
2048
3072
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
OUTPUT CODE
ERROR
(LSB)
2220 G02
CODE
2056
229
140
12866
24266
93571
COUNT
100000
80000
60000
40000
20000
–0
2060
2220 G03
2057
2058
2059
TYPICAL PERFOR A CE CHARACTERISTICS
UW
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 (LTC2220) or 135MHz (LTC2221),
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 “best
straight line” fit to 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 0000 0000 0000 and 1111 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 (LTC2220) or 135MHz (LTC2221),
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 0.3dB 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 0.3dB lower.
ELECTRICAL CHARACTERISTICS
LTC2220: INL, 2V Range
LTC2220: DNL, 2V Range
LTC2220: Shorted Input Noise
Histogram
(TA = 25°C unless otherwise noted, Note 4)
LTC2220: SNR vs Input
Frequency, –1dB, 2V Range,
LVDS Mode
LTC2220: SFDR (HD2 and HD3)
vs Input Frequency, –1dB, 2V
Range, LVDS Mode
LTC2220: SNR vs Input
Frequency, –1dB, 1V Range,
LVDS Mode
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