- 您现在的位置：买卖IC网 > PDF目录17066 > DC178A (Linear Technology)BOARD SAR ADC LTC1418 PDF资料下载
参数资料
| 型号： | DC178A |
| 厂商： | Linear Technology |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC1418 |
| 设计资源： | DC178A Design File DC178A Schematic |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 14 |
| 采样率（每秒）： | 200k |
| 数据接口： | 串行，并联 |
| 输入范围： | ±2.048 V |
| 已用 IC / 零件： | LTC1418 |
| 已供物品： | 板 |
| 相关产品： | LTC1418IG#PBF-ND - IC A/D CONV 14BIT SRL&PAR 28SSOP LTC1418AIG#TRPBF-ND - IC A/D CONV 14BIT SRL&PAR 28SSOP LTC1418CG#TRPBF-ND - IC A/D CONV 14BIT SRL&PAR 28SSOP LTC1418ACG#TRPBF-ND - IC A/D CONV 14BIT SRL&PAR 28SSOP LTC1418IG#TRPBF-ND - IC A/D CONV 14BIT SRL&PAR 28SSOP LTC1418CN#PBF-ND - IC A/D CONV 14BIT SRL&PAR 28-DIP LTC1418IN#PBF-ND - IC A/D CONV 14BIT SRL&PAR 28-DIP LTC1418CG#PBF-ND - IC A/D CONV 14BIT SRL&PAR 28SSOP LTC1418ACG#PBF-ND - IC A/D CONV 14BIT SRL&PAR 28SSOP LTC1418AIG#PBF-ND - IC A/D CONV 14BIT SRL&PAR 28SSOP 更多... |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
12
LTC1418
APPLICATIONS INFORMATION
WU
U
amplifier. 2.2V to
±15V supplies. Good AC performance,
input noise voltage = 12nV/
√Hz (typ).
LT1630/LT1631: 30MHz, 10V/
s, Dual/Quad Rail-to-Rail
Input and Output Precision Op Amps. 3.5mA supply
current per amplifier. 2.7V to
±15V supplies. Best AC
performance, input noise voltage = 6nV/
√Hz (typ),
THD = – 86dB at 100kHz.
Input Filtering
The noise and the distortion of the input amplifier and
other circuitry must be considered since they will add to
the LTC1418 noise and distortion. The small-signal band-
width of the sample-and-hold circuit is 5MHz. Any noise or
distortion products that are present at the analog inputs
will be summed over this entire bandwidth. Noisy input
circuitry should be filtered prior to the analog inputs to
minimize noise. A simple 1-pole RC filter is sufficient for
many applications. For example, Figure 7 shows a 2000pF
capacitor from + AIN to ground and a 100 source resistor
to limit the input bandwidth to 800kHz. The 2000pF
capacitor also acts as a charge reservoir for the input
sample-and-hold and isolates the ADC input from sam-
pling glitch sensitive circuitry. High quality capacitors and
resistors should be used since these components can add
distortion. NPO and silver mica type dielectric capacitors
have excellent linearity. Carbon surface mount resistors can
also generate distortion from self heating and from damage
that may occur during soldering. Metal film surface mount
resistors are much less susceptible to both problems.
Input Range
The
±2.048V and 0V to 4.096V input ranges of the
LTC1418 are optimized for low noise and low distortion.
Most op amps also perform well over these ranges,
allowing direct coupling to the analog inputs and eliminat-
ing the need for special translation circuitry.
Some applications may require other input ranges. The
LTC1418 differential inputs and reference circuitry can
accommodate other input ranges often with little or no
additional circuitry. The following sections describe the
reference and input circuitry and how they affect the input
range.
INTERNAL REFERENCE
The LTC1418 has an on-chip, temperature compensated,
curvature corrected, bandgap reference which is factory
trimmed to 2.500V. It is internally connected to a reference
amplifier and is available at Pin 3. A 8k resistor is in series
with the output so that it can be easily overdriven in
applications where an external reference is required, see
Figure 8. The reference amplifier compensation pin
(REFCOMP, Pin 4) must be connected to a capacitor to
ground. The reference is stable with capacitors of 1
F or
greater. For the best noise performance, a 10
F in parallel
with a 0.1
F ceramic is recommended.
The VREF pin can be driven with a DAC or other means
to provide input span adjustment. The reference should
be kept in the range of 2.25V to 2.75V for specified
linearity.
LTC1418
AIN
+
AIN
–
VREF
REFCOMP
AGND
ANALOG INPUT
100
1418 F07
1
2
3
4
5
2000pF
10
F
Figure 7. RC Input Filter
ANALOG
INPUT
5V
1418 F08
10
F
0.1
F
VIN
VOUT
LT1460
1
2
3
4
5
LTC1418
5V
AIN
+
AIN
–
VREF
REFCOMP
AGND
VDD
Figure 8. Using the LT1460 as an External Reference
相关PDF资料 |
PDF描述 |
|---|---|
| EBM22DSEN-S243 | CONN EDGECARD 44POS .156 EYELET |
| DC1186A | BOARD SAR ADC LTC2308 |
| MDP-XOMAP3630-10-1024512R | KIT MOBILE DEV ZOOM OMAP36X |
| V24C48E150BL3 | CONVERTER MOD DC/DC 48V 150W |
| EVAL-AD5764REBZ | EVAL BOARD FOR AD5764 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1792 | 功能描述:BOARD DAC LTC2756 RoHS:是 类别:编程器，开发系统 >> 评估板 - 数模转换器 (DAC) 系列:QuikEval™, SoftSpan™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- DAC 的数量:4 位数:12 采样率（每秒）:- 数据接口:串行，SPI? 设置时间:3µs DAC 型:电流/电压 工作温度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
| DC1792A | 制造商:Linear Technology 功能描述:EVAL BOARD, LTC2756 18BIT DAC 制造商:Linear Technology 功能描述:EVAL BOARD, LTC2756 18BIT DAC; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC2756; Kit Contents:Evaluation Board for LTC2756; Features:SoftSpan IOUT DAC, SPI Interface; Length:29mm |
| DC1796A-A | 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC6360; Kit Application Type:Data Converter; Application Sub Type:ADC; Kit Contents:Board, Guide |
| DC1796A-B | 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC6360; Kit Application Type:Data Converter; Application Sub Type:ADC; Kit Contents:Board, Guide |
| DC1796A-C | 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC6360; Kit Application Type:Data Converter; Application Sub Type:ADC; Kit Contents:Board, Guide |
发布紧急采购，3分钟左右您将得到回复。