LTC2280 Datasheet, PDF (1/24 Pages) Linear Technology – Dual 10-Bit, 105Msps Low Noise 3V ADC

LTC2280
Dual 10-Bit, 105Msps
Low Noise 3V ADC
FEATURES
■ _{Integrated Dual 10-Bit ADCs}
■ _{Sample Rate: 105Msps}
■ _{Single 3V Supply (2.85V to 3.4V)}
■ _{Low Power: 540mW}
■ _{61.6dB SNR, 85dB SFDR}
■ _{110dB Channel Isolation at 100MHz}
■ _{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), LTC2280 (10-Bit)
80Msps: LTC2294 (12-Bit), LTC2289 (10-Bit)
65Msps: LTC2293 (12-Bit), LTC2288 (10-Bit)
40Msps: LTC2292 (12-Bit), LTC2287 (10-Bit)
25Msps: LTC2291 (12-Bit), LTC2286 (10-Bit)
10Msps: LTC2290 (12-Bit)
■ _{64-Pin (9mm × 9mm) QFN Package}
U
APPLICATIO S
■ _{Wireless and Wired Broadband Communication}
■ _{Imaging Systems}
■ _{Spectral Analysis}
■ _{Portable Instrumentation}
DESCRIPTIO
The LTC^®2280 is a 10-bit 105Msps, low noise 3V dual
A/D converter designed for digitizing high frequency, wide
dynamic range signals. The LTC2280 is perfect for
demanding imaging and communications applications
with AC performance that includes 61.6dB SNR and 85dB
SFDR for signals at the Nyquist frequency.
DC specs include ±0.1LSB INL (typ), ±0.1LSB DNL (typ)
and ±0.6LSB INL, ±0.6LSB DNL over temperature. The
transition noise is a low 0.08LSB_RMS.
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.
, LT, LTC and LTM 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
–
10-BIT
PIPELINED
ADC CORE
CLK A
CLK B
CLOCK/DUTY CYCLE
CONTROL
CLOCK/DUTY CYCLE
CONTROL
ANALOG
INPUT B
+
INPUT
S/H
–
10-BIT
PIPELINED
ADC CORE
OUTPUT
DRIVERS
OV_DD
D9A
•••
D0A
OGND
MUX
OUTPUT
DRIVERS
OV_DD
D9B
•••
D0B
OGND
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)
2280 TA02
2280 TA01
2280fa
1