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DC782A-Q

Description
board eval ltc2249iuh
CategoryDevelopment board/suite/development tools   
File Size521KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance  
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DC782A-Q Overview

board eval ltc2249iuh

LTC2249
14-Bit, 80Msps
Low Power 3V ADC
FEATURES
DESCRIPTIO
Sample Rate: 80Msps
Single 3V Supply (2.7V to 3.4V)
Low Power: 222mW
73dB SNR at 70MHz Input
90dB SFDR at 70MHz Input
No Missing Codes
Flexible Input: 1V
P-P
to 2V
P-P
Range
575MHz 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
The LTC
®
2249 is a 14-bit 80Msps, low power 3V A/D
converter designed for digitizing high frequency, wide
dynamic range signals. The LTC2249 is perfect for de-
manding imaging and communications applications with
AC performance that includes 73dB SNR and 90dB SFDR
for signals well beyond the Nyquist frequency.
DC specs include
±1LSB
INL (typ),
±0.5LSB
DNL (typ) and
no missing codes over temperature. The transition noise
is a low 1.2LSB
RMS
.
A single 3V supply allows low power operation. A separate
output supply allows the outputs to drive 0.5V to 3.6V
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.
APPLICATIO S
Wireless and Wired Broadband Communication
Imaging Systems
Ultrasound
Spectral Analysis
Portable Instrumentation
TYPICAL APPLICATIO
REFH
REFL
FLEXIBLE
REFERENCE
OV
DD
14-BIT
PIPELINED
ADC CORE
SNR (dBFS)
+
ANALOG
INPUT
INPUT
S/H
CORRECTION
LOGIC
OUTPUT
DRIVERS
D13
D0
OGND
CLOCK/DUTY
CYCLE
CONTROL
2229 TA01
CLK
U
SNR vs Input Frequency,
–1dB, 2V Range
75
74
73
72
71
70
69
68
67
66
65
0
100
50
150
INPUT FREQUENCY (MHz)
200
2249 G09
U
U
2249fa
1

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DC782A-Q DC782A-A LTC2249CUH#TRPBF LTC2249IUH#PBF P0603C4422WNW LTC2249IUH#TRPBF
Description board eval ltc2249iuh board eval ltc2249iuh IC ADC 14BIT 80MSPS LP 32-QFN IC ADC 14BIT 80MSPS LP 32-QFN Fixed Resistor, Thin Film, 0.125W, 44200ohm, 75V, 0.05% +/-Tol, 5ppm/Cel, Surface Mount, 0603, CHIP IC ADC 14BIT 80MSPS LP 32-QFN
Is it Rohs certified? - - conform to conform to conform to conform to
package instruction - - HVQCCN, LCC32,.2SQ,20 HVQCCN, LCC32,.2SQ,20 CHIP HVQCCN, LCC32,.2SQ,20
Reach Compliance Code - - compliant compliant compliant compliant
ECCN code - - 3A991.C.3 3A991.C.3 EAR99 3A991.C.3
Number of terminals - - 32 32 2 32
Maximum operating temperature - - 70 °C 85 °C 155 °C 85 °C
Package form - - CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE SMT CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
surface mount - - YES YES YES YES
technology - - CMOS CMOS THIN FILM CMOS
Terminal surface - - Matte Tin (Sn) Matte Tin (Sn) TIN SILVER OVER NICKEL Matte Tin (Sn)
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