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参数资料
| 型号： | MAX992EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/13页 |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR R-R 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 通用 |
| 元件数： | 2 |
| 输出类型： | CMOS，开漏极，轨至轨，TTL |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V |
| 电压 - 输入偏移（最小值）： | 5mV @ 5.5V |
| 电流 - 输入偏压（最小值）： | 1pA @ 5.5V |
| 电流 - 静态（最大值）： | 96µA |
| CMRR, PSRR（标准）： | 80dB CMRR，80dB PSRR |
| 传输延迟（最大）： | 210ns |
| 磁滞： | ±2.5mV |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 安装类型： | 表面贴装 |
| 包装： | 带卷 (TR) |
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators
_______________________________________________________________________________________
9
5) Calculate R2 as shown. For this example, choose an
8.2k standard value:
6) Verify trip voltages and hysteresis as follows:
MAX988/MAX992/MAX996
The MAX988/MAX992/MAX996 have ±2.5mV internal
hysteresis. They have open-drain outputs and require
an external pullup resistor (Figure 2). Additional hys-
teresis can be generated using positive feedback, but
the formulas differ slightly from those of the
MAX987/MAX991/MAX995.
Use the following procedure to calculate resistor
values:
1) Select R3 according to the formulas R3 = VREF / 1A
or R3 = (VREF - VCC) / 1A - R4. Use the smaller of
the two resulting resistor values.
2) Choose the hysteresis band required (VHB). For this
example, choose 50mV.
3) Calculate R1 according to the following equation:
R1 = (R3 + R4) x (VHB / VCC)
4) Choose the trip point for VIN rising (VTHR; VTHF is
the trip point for VIN falling). This is the threshold
voltage at which the comparator switches its output
from low to high as VIN rises above the trip point.
5) Calculate R2 as follows:
6) Verify trip voltages and hysteresis as follows:
Circuit Layout and Bypassing
These comparators’ high-gain bandwidth requires
design precautions to maximize their high-speed capa-
bility. The recommended precautions are:
1) Use a PCB with an unbroken, low-inductance
ground plane.
2) Place a decoupling capacitor (a 0.1F ceramic
capacitor is a good choice) as close to VCC as
possible.
3) On the inputs and outputs, keep lead lengths short
to avoid unwanted parasitic feedback around the
comparators.
4) Solder the devices directly to the PCB instead of
using a socket.
V
rising: V
= V
x R1 x
1
R1
V
falling
IN
THR
REF
IN
:
++
+
=
+
=
1
2
1
34
1
34
RR
R
VV
Rx V
RR
Hysteresis
V
THF
THR
CC
THR
THF
R2 =
1
V
THR
REF xR
R
1
34
+
V
rising: V
= V
x R1 x
1
R1
V
falling
IN
THR
REF
IN
:
++
=
=
1
2
1
3
1
3
RR
VV
Rx V
R
Hysteresis
V
THF
THR
CC
THR
THF
R2 =
1
V
R2 =
1
3.0V
1.2 x 12k
THR
REF
.
xR
R
kM
k
1
3
1
12
1
22
803
=
VEE
VCC
OUT
R3
R2
R1
R4
0.1F
VREF
VIN
VCC
MAX988
MAX992
MAX996
Figure 2. Additional Hysteresis (MAX988/MAX992/MAX996)
相关PDF资料 |
PDF描述 |
|---|---|
| KSZ8051RNL TR | TXRX PHY 10/T100 3.3V RMII 32QFN |
| MAX991EUA+T | IC COMPARATOR R-R 8-UMAX |
| MAX990ESA+T | IC COMPARATOR R-R 8-SOIC |
| MAX991ESA+T | IC COMPARATOR R-R 8-SOIC |
| MAX989EUA+T | IC COMPARATOR R-R 8-UMAX |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9930EUA+ | 功能描述:射频检测器 2MHz to 1.6GHz 45dB 射频检测器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel |
| MAX9930EUA+T | 功能描述:射频检测器 2MHz to 1.6GHz 45dB 射频检测器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel |
| MAX9930EVKIT+ | 功能描述:射频开发工具 MAX9930 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| MAX9931EUA+ | 功能描述:射频检测器 2MHz to 1.6GHz 45dB 射频检测器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel |
| MAX9931EUA+T | 功能描述:射频检测器 2MHz to 1.6GHz 45dB 射频检测器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel |
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