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參數資料
型號: LTC2249IUH#TRPBF
廠商: Linear Technology
文件頁數: 1/24頁
文件大小: 0K
描述: IC ADC 14BIT 80MSPS LP 32-QFN
標準包裝: 2,500
位數: 14
采樣率(每秒): 80M
數據接口: 并聯
轉換器數目: 1
功率耗散(最大): 258mW
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: 32-WFQFN 裸露焊盤
供應商設備封裝: 32-QFN 裸露焊盤(5x5)
包裝: 帶卷 (TR)
輸入數目和類型: 1 個單端,雙極; 1 個差分,雙極
LTC2249
1
2249fa
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
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: 1VP-P to 2VP-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
14-Bit, 80Msps
Low Power 3V ADC
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 1.2LSBRMS.
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.
SNR vs Input Frequency,
–1dB, 2V Range
APPLICATIO S
U
Wireless and Wired Broadband Communication
Imaging Systems
Ultrasound
Spectral Analysis
Portable Instrumentation
+
INPUT
S/H
CORRECTION
LOGIC
OUTPUT
DRIVERS
14-BIT
PIPELINED
ADC CORE
CLOCK/DUTY
CYCLE
CONTROL
FLEXIBLE
REFERENCE
D13
D0
CLK
REFH
REFL
ANALOG
INPUT
2229 TA01
OVDD
OGND
INPUT FREQUENCY (MHz)
0
65
SNR
(dBFS)
66
68
69
70
75
72
50
100
2249 G09
67
73
74
71
150
200
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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