參數(shù)資料
型號： LTC2157IUP-14#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： 2-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC64
封裝： 9 X 9 MM, LEAD FREE, PLASTIC, MO-220WNJR-5, QFN-64
文件頁數(shù)： 23/32頁
文件大?。?/td> 647K
代理商： LTC2157IUP-14#TRPBF
3
21576514f
LTC2157-14/
LTC2156-14/LTC2155-14
CONVERTER CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 5)
PARAMETER
CONDITIONS
LTC2157-14
LTC2156-14
LTC2155-14
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
Resolution (No Missing Codes)
l
14
Bits
Integral Linearity Error
Differential Analog Input (Note 6)
l –5.5
±0.85
5.5
–5.3
±0.85
5.3
–5.1
±0.85
5.1
LSB
Differential Linearity Error
Differential Analog Input
l –0.9
±0.25
0.9
–0.9
±0.25
0.9
–0.9
±0.25
0.9
LSB
Offset Error
(Note 7)
l
–13
±5
13
–13
±5
13
–13
±5
13
mV
Gain Error
Internal Reference
External Reference
l –4.0
±1.5
±1
2.2
–4.0
±1.5
±1
2.2
–4.0
±1.5
±1
2.2
%FS
Offset Drift
±20
μV/°C
Full-Scale Drift
Internal Reference
External Reference
±30
±10
±30
±10
±30
±10
ppm/°C
Transition Noise
1.82
LSBRMS
ANALOG INPUT The l denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Analog Input Range (AIN+ – AIN–)
1.7V < VDD < 1.9V
l
1.5
VP-P
VIN(CM)
Analog Input Common Mode (AIN+ + AIN–)/2 Differential Analog Input (Note 8)
l
VCM – 20mV
VCM
VCM + 20mV
V
VSENSE
External Voltage Reference Applied to SENSE External Reference Mode
l
1.200
1.250
1.300
V
IIN1
Analog Input Leakage Current
0 < AIN+, AIN– < VDD, No Encode
l
–1
1
μA
IIN2
PAR/SER Input Leakage Current
0 < PAR/SER < VDD
l
–1
1
μA
IIN3
SENSE Input Leakage Current
1.2V < SENSE < 1.3V
l
–1
1
μA
tAP
Sample-and-Hold Acquisition Delay Time
1
ns
tJITTER
Sample-and-Hold Acquisition Delay Jitter
0.15
psRMS
CMRR
Analog Input Common Mode Rejection Ratio
75
dB
BW-3B
Full-Power Bandwidth
1250
MHz
DYNAMIC ACCURACY The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
LTC2157-14
LTC2156-14
LTC2155-14
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
SNR
Signal-to-Noise Ratio
15MHz Input
70MHz Input
140MHz Input
l 67.1
70
69.7
69
67.6
70
69.7
69
67.7
70
69.8
69.1
dBFS
SFDR
Spurious Free Dynamic Range
2nd or 3rd Harmonic
15MHz Input
70MHz Input
140MHz Input
l
71
90
85
80
74
90
85
80
76
90
85
80
dBFS
Spurious Free Dynamic Range
4th Harmonic or Higher
15MHz Input
70MHz Input
140MHz Input
l
81
98
95
85
82
95
85
83
95
85
dBFS
S/(N+D)
Signal-to-Noise Plus
Distortion Ratio
15MHz Input
70MHz Input
140MHz Input
l 66.3
69.9
69.4
68.8
67.2
69.9
69.4
68.8
67.3
69.9
69.4
68.5
dBFS
Crosstalk Crosstalk Between Channels
Up to 315MHz Input
–95
dB
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