LTC2252 반도체 회로 부품 판매점
(LTC2252 / LTC2253) 125/105Msps Low Power 3V ADCs
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 Linear Technology |
FEATURES
www.datasheet4u.com
■ Sample Rate: 125Msps/105Msps
■ Single 3V Supply (2.85V to 3.4V)
■ Low Power: 395mW/320mW
■ 70.2dB SNR
■ 88dB SFDR
■ No Missing Codes
■ Flexible Input: 1VP-P to 2VP-P Range
■ 640MHz Full Power Bandwidth S/H
■ Clock Duty Cycle Stabilizer
■ Shutdown and Nap Modes
■ Pin Compatible Family
125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit)
105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit)
80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit)
65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit)
40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit)
25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit)
10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit)
■ 32-Pin (5mm × 5mm) QFN Package
U
APPLICATIO S
■ Wireless and Wired Broadband Communication
■ Imaging Systems
■ Ultrasound
■ Spectral Analysis
■ Portable Instrumentation
LTC2253/LTC2252
12-Bit, 125/105Msps
Low Power 3V ADCs
DESCRIPTIO
The LTC®2253/LTC2252 are 12-bit 125Msps/105Msps,
low power 3V A/D converters designed for digitizing high
frequency, wide dynamic range signals. The LTC2253/
LTC2252 are perfect for demanding imaging and commu-
nications applications with AC performance that includes
70.1dB SNR and 85dB SFDR for signals at the Nyquist
frequency.
DC specs include ±0.3LSB INL (typ), ±0.15LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 0.32LSBRMS.
A single 3V supply allows low power operation. A separate
output supply allows the outputs to drive 0.5V to 3.3V
logic.
A single-ended CLK input controls converter operation. An
optional clock duty cycle stabilizer allows high perfor-
mance at full speed for a wide range of clock duty cycles.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
REFH
REFL
FLEXIBLE
REFERENCE
ANALOG
INPUT
+
INPUT
S/H
–
12-BIT
PIPELINED
ADC CORE
CLOCK/DUTY
CYCLE
CONTROL
CLK
CORRECTION
LOGIC
OUTPUT
DRIVERS
OVDD
D11
•
•
•
D0
OGND
22532 TA01
LTC2253: SNR vs Input Frequency,
–1dB, 2V Range, 125Msps
73
72
71
70
69
68
67
66
65
0 50 100 150 200 250 300 350
INPUT FREQUENCY (MHz) 22532 G09
22532fa
1
LTC2253/LTC2252
ABSOLUTE AXI U RATI GS
OVDD = VDD (Notes 1, 2)
Supply Voltage (VDD) ................................................. 4V
Digital Output Ground Voltage (OGND) ....... –0.3V to 1V
wwwA.dnaatalsohgeeItn4pu.ucot mVoltage (Note 3) ..... –0.3V to (VDD + 0.3V)
Digital Input Voltage .................... –0.3V to (VDD + 0.3V)
Digital Output Voltage ................ –0.3V to (OVDD + 0.3V)
Power Dissipation ............................................ 1500mW
Operating Temperature Range
LTC2253C, LTC2252C ............................. 0°C to 70°C
LTC2253I, LTC2252I ...........................–40°C to 85°C
Storage Temperature Range ..................–65°C to 125°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
NUMBER
AIN+ 1
AIN– 2
REFH 3
32 31 30 29 28 27 26 25
24
23
22
D8
D7
D6
REFH 4
REFL 5
33 21 OVDD
20 OGND
REFL 6
19 D5
VDD 7
GND 8
18 D4
17 D3
9 10 11 12 13 14 15 16
LTC2253CUH
LTC2253IUH
LTC2252CUH
LTC2252IUH
QFN PART*
MARKING
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
TJMAX = 125°C, θJA = 34°C/W
EXPOSED PAD (PIN 33) IS GND
MUST BE SOLDERED TO PCB
2253
2252
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
CO VERTER CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 4)
PARAMETER
Resolution (No Missing Codes)
Integral Linearity Error
Differential Linearity Error
Offset Error
Gain Error
Offset Drift
Full-Scale Drift
Transition Noise
CONDITIONS
Differential Analog Input
(Note 5)
Differential Analog Input
(Note 6)
External Reference
Internal Reference
External Reference
SENSE = 1V
LTC2253
LTC2252
MIN TYP MAX MIN TYP MAX
● 12
12
● –1.5 ±0.3 1.5 –1.5 ±0.3 1.5
UNITS
Bits
LSB
● –0.7 ±0.15 0.7
● –12 ±2 12
● –2.5 ±0.5 2.5
±10
±30
±5
0.32
–0.7 ±0.15
–12 ±2
–2.5 ±0.5
±10
±30
±5
0.32
0.7
12
2.5
LSB
mV
%FS
µV/°C
ppm/°C
ppm/°C
LSBRMS
22532fa
2
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( linear )
LTC2252 data
데이터시트 다운로드 :
[ LTC2252.PDF ]
[ LTC2252 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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