
LTC2246H
1
2246hf
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
14-Bit, 25Msps
125°C ADC In TQFP
The LTC2246H is a 14-bit 25Msps, low power 3V A/D
converter designed for digitizing high frequency, wide
dynamic range signals. The LTC2246H is perfect for
demanding imaging and communications applications
with AC performance that includes 74.5dB SNR and 90dB
SFDR.
DC specs include ±1LSB INL (typ), ±0.5LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 1LSBRMS.
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 performance
at full speed for a wide range of clock duty cycles.
Typical INL, 2V Range
■
Sample Rate: 25Msps
■
–40°C to 125°C Operation
■
Single 3V Supply (2.8V to 3.5V)
■
Low Power: 75mW
■
74.5dB 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
LTC2246H (14-Bit), LTC2226H (12-Bit)
■
32-Pin (5mm × 5mm) TQFP Package
■
Automotive
■
Industrial
■
Wireless and Wired Broadband Communication
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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+
INPUT
S/H
CORRECTION
LOGIC
OUTPUT
DRIVERS
14-BIT
PIPELINED
ADC CORE
CLOCK/DUTY
CYCLE
CONTROL
FLEXIBLE
REFERENCE
D13
D0
CLK
REFH
REFL
ANALOG
INPUT
2246 TA01
OVDD
OGND
CODE
0
–2.0
INL
ERROR
(LSB)
–1.0
–0.5
0
2.0
1.0
4096
8192
2246 TA01b
–1.5
1.5
0.5
12288
16384