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参数资料
| 型号： | MAX7419EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/14页 |
| 文件大小： | 0K |
| 描述： | IC FILTER LOWPASS 5TH 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 滤波器类型： | 贝塞尔，低通开关电容器 |
| 频率 - 截止或中心： | 45kHz |
| 滤波器数： | 1 |
| 滤波器阶数： | 5th |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
| 配用： | MAXFILTERBRD+-ND - BOARD EVAL MAX7408/7415/418-7425 |
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
_______________________________________________________________________________________
9
NAME
FUNCTION
1
COM
Common Input Pin. Biased internally at midsupply. Bypass COM externally to GND with a 0.1F capacitor.
To override internal biasing, drive COM with an external supply.
2
IN
Filter Input
PIN
3
GND
Ground
4
VDD
Positive Supply Input: +5V for MAX7418–MAX7421, +3V for MAX7422–MAX7425. Bypass VDD to GND with a
0.1F capacitor.
8
CLK
Clock Input. Connect an external capacitor (COSC) from CLK to ground. To override the internal oscillator,
connect CLK to an external clock: fC = fCLK /100.
7
SHDN
Shutdown Input. Drive low to enable shutdown mode; drive high or connect to VDD for normal operation.
6
OS
Offset Adjust Input. To adjust output offset, connect OS to an external supply through a resistive voltage-
divider (Figure 4). Connect OS to COM if no offset adjustment is needed. The
Offset and Common-Mode
Input Adjustment section.
5
OUT
Filter Output
Pin Description
_______________Detailed Description
The MAX7418/MAX7421/MAX7422/MAX7425 elliptic
lowpass filters provide sharp rolloff with good stopband
rejection. The MAX7419/MAX7423 Bessel filters provide
low overshoot and fast settling responses, and the
MAX7420/MAX7424 Butterworth filters provide a maxi-
mally flat passband response. All parts operate with a
100:1 clock-to-corner frequency ratio.
Most switch capacitor filters (SCFs) are designed with
biquadratic sections. Each section implements two
pole-zero pairs, and the sections can be cascaded to
produce higher order filters. The advantage to this
approach is ease of design. However, this type of
design is highly sensitive to component variations if any
section’s Q is high. The MAX7418–MAX7425 use an
alternative approach, which is to emulate a passive net-
work using switched-capacitor integrators with sum-
ming and scaling. The passive network may be
synthesized using CAD programs, or may be found in
many filter books. Figure 1 shows a basic 5th-order lad-
der filter structure.
Typical Operating Characteristics (continued)
(VDD = +5V for MAX7418–MAX7421, VDD = +3V for MAX7422–MAX7425; fCLK = 2.2MHz; SHDN = VDD; VCOM = VOS = VDD / 2;
TA = +25°C; unless otherwise noted.)
0
0.5
1.5
1.0
2.0
2.5
3.5
3.0
4.0
4.5
5.0
5.5
DC OFFSET VOLTAGE
vs. SUPPLY VOLTAGE
MAX7418
toc28
SUPPLY VOLTAGE (V)
DC
OFFSET
VOLTAGE
(mV)
0
1.0
0.5
2.0
1.5
2.5
3.0
-40
10
-15
35
60
85
DC OFFSET VOLTAGE
vs. TEMPERATURE
MAX7418
toc27
TEMPERATURE (
°C)
DC
OFFSET
VOLTAGE
(mV)
VDD = 5V
VDD = 3V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX741DCAP | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX741DCAP+ | 功能描述:电流型 PWM 控制器 5th-Order Lowpass Elliptic Filter RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX741DCAP+T | 功能描述:电流型 PWM 控制器 5th-Order Lowpass Elliptic Filter RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX741DCAP-T | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX741DCPP | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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