LTC1411
Single Supply
14-Bit 2.5Msps ADC
FEATURES
DESCRIPTION
The LTC®1411 is a 2.5Msps sampling 14-bit A/D converter
in a 36-pin SSOP package, which typically dissipates only
195mW from a single 5V supply. This device comes com-
plete with a high bandwidth sample-and-hold, a precision
reference, programmable input ranges and an internally
trimmed clock. The ADC can be powered down with either
the Nap or Sleep mode for low power applications.
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Sample Rate: 2.5Msps
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80dB S/(N + D) and 90dB THD at 100kHz f
IN
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Single 5V Operation
No Pipeline Delay
Programmable Input Ranges
Low Power Dissipation: 195mW (Typ)
True Differential Inputs Reject Common Mode Noise
Out-of-Range Indicator
Internal or External Reference
Sleep (1µA) and Nap (2mA) Shutdown Modes
36-Pin SSOP Package
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The LTC1411 converts either differential or single-ended
inputs and presents data in 2’s complement format.
Maximum DC specs include 2LSB INL and 14-bit no
missing code over temperature. Outstanding dynamic
performance includes 80dB S/(N + D) and 90dB THD at
100kHz input frequency.
APPLICATIONS
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The LTC1411 has four programmable input ranges
selected by two digital input pins, PGA0 and PGA1.
This provides input spans of 1.8V, 1.2ꢀV, 0.9V and
0.64V. An out-of-the-range signal together with the D13
(MSB) will indicate whether a signal is over or under the
ADC’s input range. A simple conversion start input and
a data ready signal ease connections to FIFOs, DSPs and
microprocessors.
Telecommunications
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High Speed Data Acquisition
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Digital Signal Processing
Multiplexed Data Acquisition Systems
Spectrum Analysis
Imaging Systems
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BLOCK DIAGRAM
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S/(N + D) and Effective Bits
vs Input Frequency
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1411 TA02
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Rev. A
1
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