LTC2315-12
12-Bit, 5Msps Serial
Sampling ADC in TSOT
FeaTures
DescripTion
The LTC®2315-12 is a 12-bit, 5Msps, serial sampling A/D
converter that draws only 6mA from a wide range analog
supply adjustable from 2.7V to 5.25V. The LTC2315-12
containsanintegratedbandgapandreferencebufferwhich
provide a low cost, high performance (20ppm/°C max)
and space saving applications solution. The LTC2315-12
achieves outstanding AC performance of 72.6dB SINAD
and–84dBTHDwhilesamplinga500kHzinputfrequency.
The extremely high sample rate-to-power ratio makes the
LTC2315-12 ideal for compact, low power, high speed
systems. The LTC2315-12 also provides both nap and
sleep modes for further optimization of the device power
within a system.
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5Msps Throughput Rate
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Guaranteed 12-Bit No Missing Codes
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Internal Reference: 2.048V/4.096V Span
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Low Noise: 73dB SNR
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Low Power: 6.4mA at 5Msps and 5V
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Dual Supply Range: 3V/5V operation
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Sleep Mode with < 1µA Typical Supply Current
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Nap Mode with Quick Wake-up < 1 conversion
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Separate 1.8V to 5V Digital I/O Supply
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High Speed SPI-Compatible Serial I/O
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Guaranteed Operation from –40°C to 125°C
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8-Lead TSOT-23 Package
applicaTions
The LTC2315-12 has a high-speed SPI-compatible serial
interface that supports 1.8V, 2.5V, 3V and 5V logic. The
fast 5Msps throughput makes the LTC2315-12 ideally
suited for a wide variety of high speed applications.
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Communication Systems
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High Speed Data Acquisition
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Handheld Terminal Interface
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Medical Imaging
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
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Uninterrupted Power Supplies
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Battery Operated Systems
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Automotive
Typical applicaTion
5V Supply, Internal Reference, 5Msps, 12-bit Sampling ADC
fS = 5Msps, fIN = 500kHz 16k-pt FFT
0
5V
V
= 5V
DD
LTC2315-12
2.2µF
SNR = 73.1dBFS
SINAD = 72.6dBFS
THD = –84dB
–20
–40
V
CS
DD
2.2µF
SFDR = 87dBc
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
REF
SCK
SDO
–60
–80
GND
DIGITAL OUTPUT SUPPLY
1.8V TO 5V
ANALOG INPUT
0V TO 4.096V
A
OV
DD
IN
–100
–120
–140
2.2µF
231512 TA01
500
1000
0
1500
2000
2500
FREQUENCY (kHz)
231512 TA01a
231512f
1
For more information www.linear.com/2315-12