LTC2290 Datasheet, PDF (1/24 Pages) Linear Technology – Dual 12-Bit, 10Msps Low Power 3V ADC

FEATURES
■ _{Integrated Dual 12-Bit ADCs}
■ _{Sample Rate: 10Msps}
■ _{Single 3V Supply (2.7V to 3.4V)}
■ _{Low Power: 120mW}
■ _{71.3dB 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}
LTC2290
Dual 12-Bit, 10Msps
Low Power 3V ADC
DESCRIPTIO
The LTC^®2290 is a 12-bit 10Msps, low power dual 3V
A/D converter designed for digitizing high frequency, wide
dynamic range signals. The LTC2290 is perfect for
demanding 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 0.25LSB_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
–
CLK A
CLK B
CLOCK/DUTY CYCLE
CONTROL
CLOCK/DUTY CYCLE
CONTROL
ANALOG
INPUT B
+
INPUT
S/H
–
12-BIT
PIPELINED
ADC CORE
12-BIT
PIPELINED
ADC CORE
OUTPUT
DRIVERS
OV_DD
D11A
•••
D0A
OGND
MUX
OUTPUT
DRIVERS
OV_DD
D11B
•••
D0B
OGND
2295 TA01
Typical INL, 2V Range
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
1024
2048
CODE
3072
4096
2290 TA01
2290fa
1