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LTC1400IS8 Datasheet

  • LTC1400IS8

  • Complete SO-8, 12-Bit, 400ksps ADC with Shutdown

  • 20頁

  • LINER

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LTC1400
Complete SO-8, 12-Bit,
400ksps ADC with Shutdown
FEATURES
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DESCRIPTION
The LTC
廬
1400 is a complete 400ksps, 12-bit A/D con-
verter which draws only 75mW from a 5V or
鹵
5V supplies.
This easy-to-use device comes complete with a 200ns
sample-and-hold and a precision reference. Unipolar and
bipolar conversion modes add to the flexibility of the ADC.
The LTC1400 has two power saving modes: Nap and
Sleep. In Nap mode, it consumes only 6mW of power and
can wake up and convert immediately. In the Sleep mode,
it consumes 30碌W of power typically. Upon power-up
from Sleep mode, a reference ready (REFRDY) signal is
available in the serial data word to indicate that the
reference has settled and the chip is ready to convert.
The LTC1400 converts 0V to 4.096V unipolar inputs from
a single 5V supply and
鹵2.048V
bipolar inputs from
鹵5V
supplies. Maximum DC specs include
鹵1LSB
INL,
鹵1LSB
DNL and 45ppm/擄C drift over temperature. Guaranteed AC
performance includes 70dB S/(N + D) and 鈥?76dB THD at
an input frequency of 100kHz, over temperature.
The 3-wire serial port allows compact and efficient data
transfer to a wide range of microprocessors, microcontrollers
and DSPs.
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corp.
Complete 12-Bit ADC in SO-8
Single Supply 5V or
鹵
5V Operation
Sample Rate: 400ksps
Power Dissipation: 75mW (Typ)
72dB S/(N + D) and 鈥?80dB THD at Nyquist
No Missing Codes over Temperature
Nap Mode with Instant Wake-Up: 6mW
Sleep Mode: 30碌W
High Impedance Analog Input
Input Range (1mV/LSB): 0V to 4.096 or
鹵
2.048V
Internal Reference Can Be Overdriven Externally
3-Wire Interface to DSPs and Processors (SPI and
MICROWIRE
TM
Compatible)
APPLICATIONS
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High Speed Data Acquisition
Digital Signal Processing
Multiplexed Data Acquisition Systems
Audio and Telecom Processing
Digital Radio
Spectrum Analysis
Low Power and Battery-Operated Systems
Handheld or Portable Instruments
TYPICAL APPLICATION
Single 5V Supply, 400kHz, 12-Bit Sampling A/D Converter
5V
100
Power Consumption vs Sample Rate
+
10碌F
ANALOG INPUT
(0V TO 4.096V)
2.42V REF
OUT
10碌F
1
0.1碌F
V
CC
LTC1400
V
SS
8
10
SUPPLY CURRENT (mA)
MPU
7
6
5
SERIAL
DATA LINK
LTC1400 鈥?TA01
2
3
A
IN
V
REF
GND
1
SLEEP AND NAP MODE
BETWEEN CONVERSION
SLEEP MODE BETWEEN
CONVERSION
6.4MHz CLOCK
CONV
CLK
D
OUT
P1.4
P1.3
P1.2
+
0.1碌F
0.1
4
0.01
0.001
0.01 0.1
U
U
U
NORMAL CONVERSION
NAP MODE
BETWEEN CONVERSION
1
10 100 1k 10k 100k 1M
SAMPLE RATE (Hz)
LTC1400 鈥?TA02
1

LTC1400IS8 產(chǎn)品屬性

  • LTC1400

  • 100

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 12

  • 400k

  • MICROWIRE?，串行，SPI?

  • 1

  • 160mW

  • 單電源

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

  • 1 個(gè)單端，單極；1 個(gè)單端，雙極

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