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LTC1743IFW Datasheet

  • LTC1743IFW

  • 12-Bit, 50Msps ADC

  • 24頁

  • LINER

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LTC1743
12-Bit, 50Msps ADC
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
s
Sample Rate: 50Msps
72.5dB SNR and 85dB SFDR (3.2V Range)
71dB SNR and 90dB SFDR (2V Range)
No Missing Codes
Single 5V Supply
Power Dissipation: 1000mW
Selectable Input Ranges:
鹵1V
or
鹵1.6V
150MHz Full Power Bandwidth S/H
Pin Compatible Family
25Msps: LTC1746 (14-Bit), LTC1745 (12-Bit)
50Msps: LTC1744 (14-Bit), LTC1743 (12-Bit)
65Msps: LTC1742 (14-Bit), LTC1741 (12-Bit)
80Msps: LTC1748 (14-Bit), LTC1747 (12-Bit)
48-Pin TSSOP Package
The LTC
廬
1743 is a 50Msps, sampling 12-bit A/D con-
verter designed for digitizing high frequency, wide
dynamic range signals. Pin selectable input ranges of
鹵1V
and
鹵1.6V
along with a resistor programmable mode
allow the LTC1743鈥檚 input range to be optimized for a
wide variety of applications.
The LTC1743 is perfect for demanding communications
applications with AC performance that includes 72.5dB
SNR and 85dB spurious free dynamic range. Ultralow jitter
of 0.3ps
RMS
allows undersampling of IF frequencies with
excellent noise performance. DC specs include
鹵1LSB
maximum INL and
鹵0.8LSB
DNL over temperature.
The digital interface is compatible with 5V, 3V and 2V logic
systems. The ENC and ENC inputs may be driven differen-
tially from PECL, GTL and other low swing logic families or
from single-ended TTL or CMOS. The low noise, high gain
ENC and ENC inputs may also be driven by a sinusoidal
signal without degrading performance. A separate output
power supply can be operated from 0.5V to 5V, making it
easy to connect directly to any low voltage DSPs or FIFOs.
The 48-pin TSSOP package with a flow-through pinout
simplifies the board layout.
APPLICATIO S
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Telecommunications
Receivers
Cellular Base Stations
Spectrum Analysis
Imaging Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
BLOCK DIAGRA
50Msps, 12-Bit ADC with a 2V Differential Input Range
OV
DD
0.1碌F
A
IN+
鹵1V
DIFFERENTIAL
ANALOG INPUT
S/H
AMP
12-BIT
PIPELINED ADC
12
OUTPUT
LATCHES
鈥?/div>
鈥?/div>
鈥?/div>
OF
D11
D0
CLKOUT
0.5V TO 5V
0.1碌F
A
IN
鈥?/div>
SENSE
BUFFER
RANGE
SELECT
DIFF AMP
GND
V
CM
4.7碌F
2.5V
REF
CONTROL LOGIC
1743 BD
REFLB
0.1碌F
1碌F
REFHA
4.7碌F
REFLA
REFHB
ENC
ENC
0.1碌F
1碌F
DIFFERENTIAL
ENCODE INPUT
U
OGND
V
DD
1碌F
1碌F
5V
1碌F
MSBINV
OE
W
U
1743f
1

LTC1743IFW 產(chǎn)品屬性

  • LTC1743

  • 39

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 12

  • 50M

  • 并聯(lián)

  • 1

  • 1.2W

  • 單電源

  • -40°C ~ 85°C

  • 表面貼裝

  • 48-TFSOP（0.240"，6.10mm 寬）

  • 48-TSSOP

  • 管件

  • 2 個單端，雙極；1 個差分，雙極

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