LTC2239IUH 查看數據表（PDF） - Linear Technology
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LTC2239IUH Datasheet PDF : 24 Pages
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FEATURES
■ Sample Rate: 80Msps
■ Single 3V Supply (2.7V to 3.4V)
■ Low Power: 211mW
■ 61.6dB SNR at 70MHz Input
■ 85dB 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), LTC2251 (10-Bit)
105Msps: LTC2252 (12-Bit), LTC2250 (10-Bit)
80Msps: LTC2229 (12-Bit), LTC2239 (10-Bit)
65Msps: LTC2228 (12-Bit), LTC2238 (10-Bit)
40Msps: LTC2227 (12-Bit), LTC2237 (10-Bit)
25Msps: LTC2226 (12-Bit), LTC2236 (10-Bit)
10Msps: LTC2225 (12-Bit)
■
32-Pin
(5mm
×
5mm)
U
QFN
Package
APPLICATIO S
■ Wireless and Wired Broadband Communication
■ Imaging Systems
■ Ultrasound
■ Spectral Analysis
■ Portable Instrumentation
LTC2239
10-Bit, 80Msps
Low Noise 3V ADC
DESCRIPTIO
The LTC®2239 is a 10-bit 80Msps, low power 3V A/D
converter designed for digitizing high frequency, wide
dynamic range signals. The LTC2239 is perfect for de-
manding imaging and communications applications with
AC performance that includes 61.6dB SNR and 85dB
SFDR for signals well beyond the Nyquist frequency.
DC specs include ±0.1LSB INL (typ), ±0.1LSB DNL (typ)
and ±0.5LSB INL, ±0.5LSB DNL over temperature. The
transition noise is a low 0.08LSBRMS.
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.
TYPICAL APPLICATIO
REFH
REFL
FLEXIBLE
REFERENCE
ANALOG
INPUT
+
INPUT
S/H
–
10-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC
CLOCK/DUTY
CYCLE
CONTROL
CLK
OUTPUT
DRIVERS
OVDD
D9
•
•
•
D0
OGND
2239 TA01
SNR vs Input Frequency,
–1dB, 2V Range
65
64
63
62
61
60
59
58
57
56
55
0
50
100
150
200
INPUT FREQUENCY (MHz)
2239 G09
2239fa
1
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