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LTC2225
1
2225fa
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
■ Sample Rate: 10Msps
■ Single 3V Supply (2.7V to 3.4V)
■ Low Power: 60mW
■ 71.3dB 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
12-Bit, 10Msps
Low Power 3V ADC
The LTC
2225 is a 12-bit 10Msps, low power 3V A/D
converter designed for digitizing high frequency, wide
dynamic range signals. The LTC2225 is perfect for de-
manding imaging and communications applications with
AC performance that includes 71.3dB SNR and 90dB
SFDR for signals well beyond the Nyquist frequency.
DC specs include
±0.3LSB INL (typ), ±0.15LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 0.25LSBRMS.
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.
Typical INL, 2V Range
APPLICATIO S
U
■ Wireless and Wired Broadband Communication
■ Imaging Systems
■
Spectral Analysis
■ Portable Instrumentation
–
+
INPUT
S/H
CORRECTION
LOGIC
OUTPUT
DRIVERS
12-BIT
PIPELINED
ADC CORE
CLOCK/DUTY
CYCLE
CONTROL
FLEXIBLE
REFERENCE
D11
D0
CLK
REFH
REFL
ANALOG
INPUT
2225 TA01
OVDD
OGND
CODE
0
–1.0
INL
ERROR
(LSB)
–0.8
–0.4
–0.2
0
1.0
0.4
1024
2048
2225 G01
–0.6
0.6
0.8
0.2
3072
4096
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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