LTC2295_15 Datasheet, PDF (1/24 Pages) Linear Technology – Dual 14-Bit, 10Msps Low Power 3V ADC

FEATURES
■ _{Integrated Dual 14-Bit ADCs}
■ _{Sample Rate: 10Msps}
■ _{Single 3V Supply (2.7V to 3.4V)}
■ _{Low Power: 120mW}
■ _{74.4dB SNR}
■ _{90dB SFDR}
■ _{110dB Channel Isolation}
■ _{Multiplexed or Separate Data Bus}
■ _{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}
105Msps: LTC2282 (12-Bit), LTC2284 (14-Bit)
80Msps: LTC2294 (12-Bit), LTC2299 (14-Bit)
65Msps: LTC2293 (12-Bit), LTC2298 (14-Bit)
40Msps: LTC2292 (12-Bit), LTC2297 (14-Bit)
25Msps: LTC2291 (12-Bit), LTC2296 (14-Bit)
10Msps: LTC2290 (12-Bit), LTC2295 (14-Bit)
■ _{64-Pin (9mm × 9mm) QFN Package}
U
APPLICATIO S
■ _{Wireless and Wired Broadband Communication}
■ _{Imaging Systems}
■ _{Spectral Analysis}
■ _{Portable Instrumentation}
LTC2295
Dual 14-Bit, 10Msps
Low Power 3V ADC
DESCRIPTIO
The LTC^®2295 is a 14-bit 10Msps, low power dual 3V
A/D converter designed for digitizing high frequency, wide
dynamic range signals. The LTC2295 is perfect for
demanding imaging and communications applications
with AC performance that includes 74.4dB SNR and 90dB
SFDR for signals well beyond the Nyquist frequency.
DC specs include ±1.2LSB INL (typ), ±0.5LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 1LSB_RMS.
A single 3V supply allows low power operation. A separate
output supply allows the outputs to drive 0.5V to 3.6V
logic. An optional multiplexer allows both channels to
share a digital output bus.
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
ANALOG
INPUT A
+
INPUT
S/H
–
14-BIT
PIPELINED
ADC CORE
CLK A
CLK B
CLOCK/DUTY CYCLE
CONTROL
CLOCK/DUTY CYCLE
CONTROL
ANALOG
INPUT B
+
INPUT
S/H
–
14-BIT
PIPELINED
ADC CORE
OUTPUT
DRIVERS
OV_DD
D13A
•••
D0A
OGND
MUX
OUTPUT
DRIVERS
OV_DD
D13B
•••
D0B
OGND
2295 TA01
Typical INL, 2V Range
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
4096
8192
CODE
12288 16384
2295 G02
2295fa
1