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参数资料
型号： LTC2221CUP#TRPBF
厂商： Linear Technology
文件页数： 1/32页
文件大小： 0K
描述： IC ADC 12-BIT 135MSPS 64-QFN
标准包装： 2,000
位数： 12
采样率（每秒）： 135M
数据接口： 并联
转换器数目： 1
功率耗散（最大）： 931mW
电压电源： 单电源
工作温度： 0°C ~ 70°C
安装类型： 表面贴装
封装/外壳： 64-WFQFN 裸露焊盘
供应商设备封装： 64-QFN（9x9）
包装： 带卷 (TR)
输入数目和类型： 1 个单端，双极; 1 个差分，双极
LTC2220/LTC2221
1
22201fa
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
12-Bit,170Msps/
135Msps ADCs
The LTC
2220 and LTC2221 are 170Msps/135Msps, sam-
pling 12-bit A/D converters designed for digitizing high
frequency, wide dynamic range signals. The LTC2220/
LTC2221 are perfect for demanding communications
applications with AC performance that includes 67.5dB
SNR and 80dB spurious free dynamic range for signals
up to 170MHz. Ultralow jitter of 0.15psRMS allows
undersampling of IF frequencies with excellent noise
performance.
DC specs include
±0.4LSB INL (typ), ±0.3LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 0.5LSBRMS.
The digital outputs can be either differential LVDS, or
single-ended CMOS. There are three format options for
the CMOS outputs: a single bus running at the full data rate
or two demultiplexed buses running at half data rate with
either interleaved or simultaneous update. A separate
output power supply allows the CMOS output swing to
range from 0.5V to 3.6V.
The ENC+ and ENC– inputs may be driven differentially or
single ended with a sine wave, PECL, LVDS, TTL, or CMOS
inputs. An optional clock duty cycle stabilizer allows high
performance at full speed for a wide range of clock duty
cycles.
–
+
INPUT
S/H
CORRECTION
LOGIC
OUTPUT
DRIVERS
12-BIT
PIPELINED
ADC CORE
CLOCK/DUTY
CYCLE
CONTROL
FLEXIBLE
REFERENCE
D11
D0
ENCODE
INPUT
REFH
REFL
ANALOG
INPUT
22201 TA01
CMOS
OR
LVDS
0.5V
TO 3.6V
3.3V
VDD
OVDD
OGND
APPLICATIO S
U
SFDR vs Input Frequency
0
600
500
400
100
200
300
INPUT FREQUENCY (MHz)
SFDR
(dBFS)
80
90
100
22201 TA01b
70
60
40
50
4th OR HIGHER
2nd OR 3rd
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
■ Sample Rate: 170Msps/135Msps
■
67.5dB SNR up to 140MHz Input
■ 80dB SFDR up to 170MHz Input
■ 775MHz Full Power Bandwidth S/H
■
Single 3.3V Supply
■ Low Power Dissipation: 890mW/660mW
■ LVDS, CMOS, or Demultiplexed CMOS Outputs
■
Selectable Input Ranges:
±0.5V or ±1V
■ No Missing Codes
■ Optional Clock Duty Cycle Stabilizer
■
Shutdown and Nap Modes
■ Data Ready Output Clock
■ Pin Compatible Family
185Msps: LTC2220-1 (12-Bit)
170Msps: LTC2220 (12-Bit), LTC2230 (10-Bit)
135Msps: LTC2221 (12-Bit), LTC2231 (10-Bit)
■
64-Pin 9mm
× 9mm QFN Package
■ Wireless and Wired Broadband Communication
■ Cable Head-End Systems
■ Power Amplifier Linearization
■ Communications Test Equipment
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