参数资料
型号: LTC2308CUF#PBF
厂商: Linear Technology
文件页数: 1/20页
文件大小: 0K
描述: IC ADC 12BIT 8CH 500KSPS 24-QFN
标准包装: 91
位数: 12
采样率(每秒): 500k
数据接口: MICROWIRE?,串行,SPI?
转换器数目: 1
功率耗散(最大): 17.5mW
电压电源: 单电源
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 管件
输入数目和类型: 8 个单端,单极;8 个单端,双极;4 个差分,单极;4 个差分,双极
配用: DC1186A-ND - BOARD SAR ADC LTC2308
LTC2308
1
2308fb
FREQUENCY (kHz)
0
–140
MAGNITUDE
(dB)
–120
–100
–80
0
–40
100
150
250
–20
–60
–130
–110
–90
–10
–50
–30
–70
50
200
2308 TA01b
fSMPL = 500kHz
SINAD = 73.6dB
THD = –89.5dB
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Low Noise, 500ksps,
8-Channel, 12-Bit ADC
The LTC
2308 is a low noise, 500ksps, 8-channel, 12-bit
ADC with an SPI/MICROWIRE compatible serial interface.
This ADC includes an internal reference and a fully differ-
ential sample-and-hold circuit to reduce common mode
noise. The internal conversion clock allows the external
serial output data clock (SCK) to operate at any frequency
up to 40MHz.
The LTC2308 operates from a single 5V supply and draws
just 3.5mA at a sample rate of 500ksps. The auto-shutdown
feature reduces the supply current to 200μA at a sample
rate of 1ksps.
The LTC2308 is packaged in a small 24-pin 4mm × 4mm
QFN. The internal 2.5V reference and 8-channel multiplexer
further reduce PCB board space requirements.
The low power consumption and small size make the
LTC2308 ideal for battery operated and portable appli-
cations, while the 4-wire SPI compatible serial interface
makes this ADC a good match for isolated or remote data
acquisition systems.
8192 Point FFT, fIN = 1kHz
n 12-Bit Resolution
n 500ksps Sampling Rate
n Low Noise: SINAD = 73.3dB
n Guaranteed No Missing Codes
n Single 5V Supply
n Auto-Shutdown Scales Supply Current with Sample
Rate
n Low Power: 17.5mW at 500ksps
0.9mW Nap Mode
35μW Sleep Mode
n Internal Reference
n Internal 8-Channel Multiplexer
n Internal Conversion Clock
n SPI/MICROWIRETM Compatible Serial Interface
n Unipolar or Bipolar Input Ranges (Software Selectable)
n Separate Output Supply OVDD (2.7V to 5.25V)
n 24-Pin 4mm × 4mm QFN Package
n High Speed Data Acquisition
n Industrial Process Control
n Motor Control
n Accelerometer Measurements
n Battery Operated Instruments
n Isolated and/or Remote Data Acquisition
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
SDI
SDO
SCK
CONVST
2308 TA01
SERIAL
PORT
ANALOG
INPUT
MUX
CH0-CH7
ANALOG INPUTS
0V TO 4.096V UNIPOLAR
±2.048V BIPOLAR
REFCOMP
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTER
INTERNAL
2.5V REF
LTC2308
AVDD
DVDD
OVDD
GND
0.1μF
2.7V TO 5.25 V
5V
12-BIT
500ksps
ADC
+
2.2μF
0.1μF
10μF
0.1μF
VREF
L, 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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