参数资料
型号: LTC2171IUKG-14#TRPBF
厂商: Linear Technology
文件页数: 15/34页
文件大小: 0K
描述: IC ADC 14BIT SER/PAR 40M 52-QFN
标准包装: 2,000
位数: 14
采样率(每秒): 45M
数据接口: Serial LVDS
转换器数目: 4
功率耗散(最大): 293mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 52-WFQFN 裸露焊盘
供应商设备封装: 52-QFN(7x8)
包装: 带卷 (TR)
输入数目和类型: 2 Differential; 2 Single-Ended
配用: DC1371A-ND - BOARD USB DATA ACQUISITION HS
LTC2172-14/
LTC2171-14/LTC2170-14
22
21721014fb
applicaTions inForMaTion
Reference
TheLTC2172-14/LTC2171-14/LTC2170-14hasaninternal
1.25V voltage reference. For a 2V input range using the
internal reference, connect SENSE to VDD. For a 1V input
range using the internal reference, connect SENSE to
ground. For a 2V input range with an external reference,
apply a 1.25V reference voltage to SENSE (Figure 9).
The input range can be adjusted by applying a voltage to
SENSE that is between 0.625V and 1.30V. The input range
will then be 1.6 VSENSE.
The reference is shared by all four ADC channels, so it is
not possible to independently adjust the input range of
individual channels.
The VREF, REFH and REFL pins should be bypassed, as
shown in Figure 8. The 0.1F capacitor between REFH and
REFL should be as close to the pins as possible (not on
the backside of the circuit board).
Encode Input
The signal quality of the encode inputs strongly affects
the A/D noise performance. The encode inputs should
be treated as analog signals—do not route them next to
digital traces on the circuit board. There are two modes
of operation for the encode inputs: the differential encode
mode (Figure 10), and the single-ended encode mode
(Figure 11).
Figure 8. Reference Circuit
Figure 9. Using an External 1.25V Reference
Figure 10. Equivalent Encode Input Circuit
for Differential Encode Mode
Figure 11. Equivalent Encode Input Circuit
for Single-Ended Encode Mode
VREF
REFH
SENSE
TIE TO VDD FOR 2V RANGE;
TIE TO GND FOR 1V RANGE;
RANGE = 1.6 VSENSE FOR
0.625V < VSENSE < 1.300V
1.25V
REFL
0.1F
2.2F
INTERNAL ADC
HIGH REFERENCE
BUFFER
5
0.8x
DIFF AMP
INTERNAL ADC
LOW REFERENCE
1.25V BANDGAP
REFERENCE
0.625V
RANGE
DETECT
AND
CONTROL
1F
0.1F
LTC2172-14
217214 F08
SENSE
1.25V
EXTERNAL
REFERENCE
1F
VREF
217214 F09
LTC2172-14
VDD
LTC2172-14
217214 F10
ENC
ENC+
15k
VDD
DIFFERENTIAL
COMPARATOR
30k
ENC+
ENC
217214 F11
0V
1.8V TO 3.3V
LTC2172-14
CMOS LOGIC
BUFFER
相关PDF资料
PDF描述
LTC2283IUP#TRPBF IC ADC DUAL 12BIT 125MSPS 64QFN
LT1081ISW#TRPBF IC DRVR/RCVR DL-RS232 5V 16SOIC
MS3108A18-4S CONN PLUG 4POS RT ANG W/SCKT
MS3101E20-3P CONN RCPT 3POS FREE HNG W/PINS
IDT72V815L20PF8 IC FIFO SYNC 512X18 20NS 128QFP
相关代理商/技术参数
参数描述
LTC2172-12 制造商:LINER 制造商全称:Linear Technology 功能描述:12-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs
LTC2172-14 制造商:LINER 制造商全称:Linear Technology 功能描述:Quad 14-Bit, 125Msps ADC with Integrated Drivers
LTC2172CUKG-12#PBF 功能描述:IC ADC 12BIT SER/PAR 65M 52-QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率(每秒):20M 数据接口:并联 转换器数目:2 功率耗散(最大):155mW 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-TQFP 供应商设备封装:48-TQFP(7x7) 包装:Digi-Reel® 输入数目和类型:4 个单端,单极;2 个差分,单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6
LTC2172CUKG-12#TRPBF 功能描述:IC ADC 12BIT SER/PAR 65M 52-QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率(每秒):83k 数据接口:串行,并联 转换器数目:1 功率耗散(最大):95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP(0.600",15.24mm) 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端,双极
LTC2172CUKG-12PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:12-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs