LTC2313-12_15 Datasheet, PDF (1/22 Pages) Linear Technology – 12-Bit, 2.5Msps Serial Sampling ADC in TSOT

FEATURES
nn _{2.5Msps Throughput Rate}
nn _{No Cycle Latency}
nn _{Guaranteed 12-Bit No Missing Codes}
nn _{Single 3V or 5V Supply}
nn _{Low Noise: 73dB SNR}
nn _{Low Power: 14mW at 2.5Msps and 3V Supply}
nn _{Low Drift (20ppm/°C Maximum) 2.048V or 4.096V}
Internal Reference
nn _{Sleep Mode with < 1µA Typical Supply Current}
nn _{Nap Mode with Quick Wake-Up < 1 Conversion}
nn _{Separate 1.8V to 5V Digital I/O Supply}
nn _{High Speed SPI-Compatible Serial I/O}
nn _{Guaranteed Operation from –40°C to 125°C}
nn _{8-Lead TSOT-23 Package}
APPLICATIONS
nn _{Communication Systems}
nn _{High Speed Data Acquisition}
nn _{Handheld Terminal Interface}
nn _{Medical Imaging}
nn _{Uninterrupted Power Supplies}
nn _{Battery Operated Systems}
nn _Automotive
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LTC2313-12
12-Bit, 2.5Msps Serial
Sampling ADC in TSOT
DESCRIPTION
The LTC^®2313-12 is a 12-bit, 2.5Msps, serial sampling
A/D converter that draws only 5mA from a single 3V or
5V supply. The LTC2313-12 contains an integrated low
drift reference and reference buffer providing a low cost,
high performance (20ppm/°C maximum) and space
saving solution. The LTC2313-12 achieves outstanding
AC performance of 72.6dB SINAD and –84dB THD while
sampling at 2.5Msps. The extremely high sample rate-to-
power ratio makes the LTC2313-12 ideal for compact, low
power, high speed systems. The supply current decreases
at lower sampling rates as the device automatically enters
nap mode after conversions.
The LTC2313-12 has a high speed SPI-compatible serial
interface that supports 1.8V, 2.5V, 3V and 5V logic. The
fast 2.5Msps throughput with no cycle latency makes
the LTC2313-12 ideally suited for a wide variety of high
speed applications.
Complete 14-/12-Bit Pin-Compatible SAR ADC Family
500ksps 2.5Msps 4.5Msps
5Msps
14-Bit
LTC2312-14 LTC2313-14 LTC2314-14
12-Bit
LTC2312-12 LTC2313-12
LTC2315-12
Power 3V/5V 9mW/15mW 14mW/25mW 18mW/31mW 19mW/32mW
TYPICAL APPLICATION
5V Supply, Internal Reference, 2.5Msps, 12-Bit Sampling ADC
5V
2.2µF
2.2µF
LTC2313-12
V_DD CONV
REF SCK
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
16k Point FFT, f_S = 2.5Msps, f_IN = 497kHz
0
V_DD = 5V
–20
SNR = 73dBFS
SINAD = 72.6dBFS
–40
THD = –84dB
SFDR = 87dB
–60
–80
ANALOG INPUT
0V TO 4.096V
GND SDO
A_IN OV_DD
DIGITAL OUTPUT SUPPLY
1.8V TO 5V
2.2µF
231312 TA01a
–100
–120
–140
–160
0
250
500
750 1000
INPUT FREQUENCY (kHz)
231312 TA01b
231312fb
For more information www.linear.com/LTC2313-12
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