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| 型号： | MAX902ESD+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/13页 |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR VOLT 14-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 带锁销 |
| 元件数： | 2 |
| 输出类型： | TTL |
| 电压 - 电源，单路/双路(±)： | 5 V ~ 10 V，±2.5 V ~ 5 V |
| 电压 - 输入偏移（最小值）： | 4mV @ ±5V |
| 电流 - 输入偏压（最小值）： | 10µA @ ±5V |
| 电流 - 静态（最大值）： | 8mA，6mA，3mA |
| CMRR, PSRR（标准）： | 82.5dB CMRR，80dB PSRR |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 安装类型： | 表面贴装 |
| 包装： | 管件 |
| 产品目录页面： | 1385 (CN2011-ZH PDF) |
MAX900–MAX903
High-Speed, Low-Power Voltage Comparators
8
_______________________________________________________________________________________
Applications Information
Circuit Layout
Because of the large gain-bandwidth transfer function of
the MAX900–MAX903, special precautions must be
taken to realize their full high-speed capability. A printed
circuit board with a good, low-inductance ground plane
is mandatory. All decoupling capacitors (the small
100nF ceramic type is a good choice) should be mount-
ed as close as possible to the power-supply pins.
Separate decoupling capacitors for analog VCC and for
digital VDD are also recommended. Close attention
should be paid to the bandwidth of the decoupling and
terminating components. Short lead lengths on the
inputs and outputs are essential to avoid unwanted par-
asitic feedback around the comparators. Solder the
device directly to the printed circuit board instead of
using a socket.
Input Slew-Rate Requirements
As with all high-speed comparators, the high gain-band-
width product of the MAX900–MAX903 can create oscil-
lation problems when the input traverses the linear
region. For clean output switching without oscillation or
steps in the output waveform, the input must meet mini-
mum slew-rate requirements. Oscillation is largely a
function of board layout and of coupled source imped-
ance and stray input capacitance. Both poor layout and
large-source impedance will cause the part to oscillate
and increase the minimum slew-rate requirement. In
some applications, it may be helpful to apply some posi-
tive feedback between the output and + input. This
pushes the output through the transition region cleanly,
but applies a hysteresis in threshold seen at the input
terminals.
TTL Output and Latch Inputs
The comparator TTL-output stages are optimized for dri-
ving low-power Schottky TTL with a fan-out of four.
When the latch is connected to a logic high level, the
comparator is transparent and immediately responds to
changes at the input terminals. When the latch is con-
nected to a TTL low level, the comparator output latches
in the same state as at the instant that the latch command
is applied, and will not respond to subsequent changes
at the input. No latch is provided on the MAX901.
Power Supplies
The MAX900–MAX903 can be powered from separate
analog and digital supplies or from a single +5V supply.
The analog supply can range from +5V to +10V with
VEE grounded for single-supply operation (Figures 1A
and 1B) or from a split ±5V supply (Figure 1C). The VDD
digital supply always requires +5V.
In high-speed, mixed-signal applications where a com-
mon ground is shared, a noisy digital environment can
adversely affect the analog input signal. When set up
with
separate
supplies
(Figure
1C),
the
MAX900–MAX903 isolate analog and digital signals by
providing a separate AGND (VEE) and DGND.
+10V
+5V
VCC
VEE
VDD
OUT
GND
+5V
VCC
VEE
VDD
OUT
GND
+5V
-5V
+5V
VCC
VEE
VDD
OUT
GND
Figure 1A. Separate Analog Supply,
Common Ground
Figure 1B. Single +5V Supply, Common
Ground
Figure 1C. Split ±5V Supply, Separate
Ground
Typical Power-Supply Alternatives
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX902ESD+ | 功能描述:校验器 IC High-Speed Voltage Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX902ESD+T | 功能描述:校验器 IC High-Speed Voltage Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX902ESD-T | 功能描述:校验器 IC High-Speed Voltage Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX902MJD | 功能描述:校验器 IC RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX902MJD/HR | 制造商:Maxim Integrated Products 功能描述:14 PINS CDIP PKG - Bulk |
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