參數(shù)資料
型號: LTC1742IFW#TRPBF
廠商: Linear Technology
文件頁數(shù): 1/20頁
文件大小: 0K
描述: IC ADC 14BIT 65MSPS 48-TSSOP
標(biāo)準(zhǔn)包裝: 1,800
位數(shù): 14
采樣率(每秒): 65M
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 1.38W
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-TFSOP(0.240",6.10mm 寬)
供應(yīng)商設(shè)備封裝: 48-TSSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 2 個單端,雙極;1 個差分,雙極
1
LTC1742
1742f
14-Bit, 65Msps Low Noise ADC
s
Sample Rate: 65Msps
s
76.5dB SNR and 90dB SFDR (3.2V Range)
s
72.8dB SNR and 90dB SFDR (2V Range)
s
No Missing Codes
s
Single 5V Supply
s
Power Dissipation: 1.275W
s
Selectable Input Ranges:
±1V or ±1.6V
s
240MHz Full Power Bandwidth S/H
s
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)
s
48-Pin TSSOP Package
s
Telecommunications
s
Receivers
s
Cellular Base Stations
s
Spectrum Analysis
s
Imaging Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LTC
1742 is an 65Msps, sampling 14-bit A/D con-
verter designed for digitizing high frequency, wide dy-
namic range signals. Pin selectable input ranges of
±1V
and
±1.6V along with a resistor programmable mode
allow the LTC1742’s input range to be optimized for a wide
variety of applications.
The LTC1742 is perfect for demanding communications
applications with AC performance that includes 76.5dB
SNR and 90dB spurious free dynamic range. Ultralow jitter
of 0.15psRMS allows undersampling of IF frequencies with
excellent noise performance. DC specs include
±3LSBINL
and
±1LSB DNL.
The digital interface is compatible with 5V, 3V, 2V and
LVDS logic levels. The ENC and ENC inputs may be driven
differentially 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 low voltage
DSPs or FIFOs.
The TSSOP package with a flow-through pinout simplifies
the board layout.
65Msps, 14-Bit ADC with a 2V Differential Input Range
14-BIT
PIPELINED ADC
14
S/H
AMP
±1V
DIFFERENTIAL
ANALOG INPUT
AIN
+
AIN
SENSE
VCM
4.7
F
DIFF AMP
REFLA
REFHB
GND
1742 BD
ENC
4.7
F
1
F1F
0.1
F
0.1
F
REFHA
REFLB
BUFFER
RANGE
SELECT
2.35VREF
CORRECTION
LOGIC AND
SHIFT
REGISTER
OUTPUT
LATCHES
CONTROL LOGIC
OVDD
VDD
OGND
0.5V
TO 5V
5V
0.1
F
1
F
1
F
1
F
D13
D0
CLKOUT
OF
ENC
DIFFERENTIAL
ENCODE INPUT
OE
MSBINV
0.1
F
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
BLOCK DIAGRA
W
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