参数资料
型号: LTC1859CG#PBF
厂商: Linear Technology
文件页数: 1/20页
文件大小: 0K
描述: IC ADC 8CH 16BIT 100KSPS 28-SSOP
标准包装: 47
系列: SoftSpan™
位数: 16
采样率(每秒): 100k
数据接口: MICROWIRE?,串行,SPI?
转换器数目: 1
功率耗散(最大): 40mW
电压电源: 模拟和数字
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 28-SSOP(0.209",5.30mm 宽)
供应商设备封装: 28-SSOP
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
产品目录页面: 1347 (CN2011-ZH PDF)
配用: DC682A-ND - BOARD SAR ADC LTC1859
LTC1857/LTC1858/LTC1859
1
185789fa
100kHz, 12-Bit/14-Bit/16-Bit Sampling ADC
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
8-Channel, 12-/14-/16-Bit,
100ksps SoftSpan A/D
Converters with Shutdown
The LTC1857/LTC1858/LTC1859 are 8-channel, low
power, 12-/14-/16-bit, 100ksps, analog-to-digital convert-
ers (ADCs). These SoftSpan ADCs can be software-
programmed for 0V to 5V, 0V to 10V, ±5V or ±10V input
spans and operate from a single 5V supply. The 8-channel
multiplexer can be programmed for single-ended inputs
or pairs of differential inputs or combinations of both. In
addition, all channels are fault protected to ±25V. A fault
condition on any channel will not affect the conversion
result of the selected channel.
An onboard high performance sample-and-hold and pre-
cision reference minimize external components. The low
40mW power dissipation is made even more attractive with
two user selectable power shutdown modes. DC specica-
tions include ±3LSB INL for the LTC1859, ±1.5LSB INL
for the LTC1858 and ±1LSB for the LTC1857.
The internal clock is trimmed for 5μs maximum conversion
time and the sampling rate is guaranteed at 100ksps. A
separate convert start input and data ready signal (BUSY)
ease connections to FIFOs, DSPs and microprocessors.
n Sample Rate: 100ksps
n 8-Channel Multiplexer with ±25V Protection
n Single 5V Supply
n Software-Programmable Input Ranges:
0V to 5V, 0V to 10V, ±5V or ±10V
Single Ended or Differential
n ±3LSB INL for the LTC1859, ±1.5LSB INL for the
LTC1858, ±1LSB INL for the LTC1857
n Power Dissipation: 40mW (Typ)
n SPI/MICROWIRE Compatible Serial I/O
n Power Shutdown: Nap and Sleep
n
Signal-to-Noise Ratio: 87dB (Typ) for the LTC1859
n
Operates with Internal or External Reference
n
Internal Synchronized Clock
n
28-Pin SSOP Package
n Industrial Process Control
n Multiplexed Data Acquisition Systems
n High Speed Data Acquisition for PCs
n Digital Signal Processing
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. SoftSpan is
a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
LTC1859 Typical INL Curve
COM
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
MUXOUT+
MUXOUT
ADC+
ADC
AGND1
CONVST
RD
SCK
SDI
DGND
SDO
BUSY
OVDD
DVDD
AVDD
AGND3
AGND2
REFCOMP
VREF
LTC1857/
LTC1858/
LTC1859
SOFTWARE-PROGRAMMABLE
SINGLE-ENDED OR
DIFFERENTIAL INPUTS
(0V TO 5V, 0V TO 10V,
±5V OR ±10V)
10μF
1μF
10μF
3V TO 5V
5V
2.5V
10μF
μP
CONTROL
LINES
CODE
–32768
INL
(LSB)
0
0.5
1.0
0
1859 TA02
–0.5
–1.0
–2.0
–16384
16384
32767
–1.5
2.0
1.5
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