参数资料
型号: LTC2247IUH#TRPBF
厂商: Linear Technology
文件页数: 1/24页
文件大小: 0K
描述: IC ADC 14BIT 40MSPS SAMPL 32-QFN
标准包装: 2,500
位数: 14
采样率(每秒): 40M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 144mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-QFN 裸露焊盘(5x5)
包装: 带卷 (TR)
输入数目和类型: 1 个单端,双极; 1 个差分,双极
LTC2248/LTC2247/LTC2246
1
224876fa
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
Sample Rate: 65Msps/40Msps/25Msps
Single 3V Supply (2.7V to 3.4V)
Low Power: 205mW/120mW/75mW
74.3dB SNR
90dB SFDR
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, 65/40/25Msps
Low Power 3V ADCs
The LTC
2248/LTC2247/LTC2246 are 14-bit 65Msps/
40Msps/25Msps, low power 3V A/D converters designed
for digitizing high frequency, wide dynamic range signals.
The LTC2248/LTC2247/LTC2246 are perfect for demand-
ing imaging and communications applications with AC
performance that includes 74.3dB SNR and 90dB SFDR
for signals at 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 1LSBRMS.
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.
+
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
2249 TA01a
OVDD
OGND
INPUT FREQUENCY (MHZ)
0
SNR
(dBFS)
200
2249 TAO1b
50
100
150
75
74
73
72
71
70
LTC2248: SNR vs Input Frequency,
–1dB, 2V Range, 65Msps
Wireless and Wired Broadband Communication
Imaging Systems
Ultrasound
Spectral Analysis
Portable Instrumentation
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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