参数资料
| 型号： | MAX1494CCJ+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 29/34页 |
| 文件大小： | 0K |
| 描述： | IC ADC W/LCD DRIVER 32-TQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 显示器类型： | LCD |
| 配置： | 7 段 + 2 个信号器 |
| 接口： | 串行 |
| 数字或字符： | A/D，4.5 位数字 |
| 电流 - 电源： | 960µA |
| 电源电压： | 2.7 V ~ 5.25 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第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页当前第29页第30页第31页第32页第33页第34页
3.5- and 4.5-Digit, Single-Chip ADCs
with LCD Drivers
best performance, ground the MAX1492/MAX1494 to
the analog ground plane of the circuit board.
Avoid running digital lines under the device because
they can couple noise onto the device. Run the analog
ground plane under the MAX1492/MAX1494 to mini-
mize coupling of digital noise. Make the power-supply
lines to the MAX1492/MAX1494 as wide as possible to
provide low-impedance paths and reduce the effects of
glitches on the power-supply line.
Shield fast-switching signals, such as clocks, with digital
ground to avoid radiating noise to other sections of the
board. Avoid running clock signals near the analog
inputs. Avoid crossover of digital and analog signals.
Running traces that are on opposite sides of the board at
right angles to each other reduces feedthrough effects.
Good decoupling is important when using high-resolu-
tion ADCs. Decouple the supplies with 0.1μF and 4.7μF
ceramic capacitors to GND. Place these components as
close to the device as possible to achieve the best
decoupling.
Refer to the MAX1494 evaluation kit manual for the rec-
ommended layout. The evaluation kit includes a fully
assembled and tested evaluation board.
Definitions
INL
Integral nonlinearity (INL) is the deviation of the values
on an actual transfer function from a straight line. This
straight line is either a best-straight-line fit or a line
drawn between the endpoints of the transfer function,
once offset and gain errors have been nullified. INL for
the MAX1492/MAX1494 is measured using the end-
point method.
DNL
Differential nonlinearity (DNL) is the difference between
an actual step width and the ideal value of 1 LSB. A
DNL error specification of less than 1 LSB guarantees
no missing codes and a monotonic transfer function.
Rollover Error
Rollover error is defined as the absolute-value differ-
ence between a near positive full-scale reading and
near negative full-scale reading. Rollover error is tested
by applying a near full-scale positive voltage, swapping
AIN+ and AIN-, and then adding the results.
Zero Input Reading
Ideally, with AIN+ connected to AIN- the MAX1492/
MAX1494 LCD is 0 or -0. Zero input reading is the mea-
sured deviation from the ideal 0 and the actual mea-
sured point.
Gain Error
Gain error is the amount of deviation between the mea-
sured full-scale transition point and the ideal full-scale
transition point.
Common-Mode Rejection
Common-mode rejection (CMR) is the ability of a
device to reject a signal that is common to both input
terminals. The common-mode signal can be either an
AC or a DC signal or a combination of the two. CMR is
often expressed in decibels.
Normal-Mode 50Hz and 60Hz Rejection
(Simultaneously)
Normal-mode rejection is a measure of how much out-
put changes when a 50Hz and 60Hz signal is injected
into only one of the differential inputs. The MAX1492/
MAX1494 sigma-delta converter uses its internal digital
filter to provide normal-mode rejection to both 50Hz
and 60Hz power-line frequencies simultaneously.
Power-Supply Rejection Ratio
Power-supply rejection ratio (PSRR) is the ratio of the
input-supply change (in volts) to the change in the con-
verter output (in volts). It is typically measured in decibels.
______________________________________________________________________________________
29
相关PDF资料 |
PDF描述 |
|---|---|
| MAX15001BEUB+ | IC REG CTRLR PWM CM 10-UMAX |
| MAX15002ATL+T | IC REG CTRLR BUCK PWM 40-TQFNEP |
| MAX15003ATM+T | IC REG CTRLR BUCK PWM 48TQFN-EP |
| MAX15005AAUE/V+ | IC REG CTRLR PWM CM 16-TSSOP |
| MAX15006BASA+ | IC REG LDO 5V 50MA 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1494EVC16 | 功能描述:模数转换器 - ADC MAX1494C16 EVAL KIT RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1494EVKIT | 功能描述:数据转换 IC 开发工具 Evaluation Kit/Evaluation System for the MAX1493 MAX1494 MAX1495 RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX14950ACTL+ | 功能描述:外围驱动器与原件 - PCI PCIe Gen III Re-Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX14950ACTL+T | 功能描述:外围驱动器与原件 - PCI PCIe Gen III Re-Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX14950CTO+ | 功能描述:外围驱动器与原件 - PCI PCIe Gen III Re-Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
发布紧急采购，3分钟左右您将得到回复。