參數(shù)資料
型號(hào)： MAX970
廠商： Maxim Integrated Products, Inc.
英文描述： 8-Bit Bus-Interface Flip-Flops With 3-State Outputs 24-CDIP -55 to 125
中文描述： 單/雙/四路、微功耗、超低電壓、滿擺幅輸入/輸出比較器
文件頁數(shù)： 11/12頁
文件大小： 116K
代理商： MAX970
M
Single/Dual/Quad, Micropower,
Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
______________________________________________________________________________________
11
3) Calculate R1: R1 = (R3 + R4) x (V
HB
/ V
CC
). Putting
in the values for this example, R1 = (2.2M
+ 10k) x
(50mV / 5.0V) = 22.1k
.
4) Choose the trip point for V
IN
rising. This is the
threshold voltage where the comparator output tran-
sitions from low to high as V
IN
rises above the trip
point. For this example, choose 3.0V.
5) Calculate R2 as follows:
where V
THR
is the rising-voltage trip threshold.
Choose a standard value of 15k
.
6) Verify trip voltages and hysteresis as follows:
where V
THR
is the rising-voltage trip point, and V
THF
is the falling-voltage trip point.
Circ uit Layout and Bypassing
Power-supply bypass capacitors are not needed if sup-
ply impedance is low, but 100nF bypass capacitors
should be used when supply impedance is high or
when supply leads are long. Minimize signal lead
lengths to reduce stray capacitance between the input
and output that might cause instability.
IR Rec eiver
Figure 5 shows an application using the MAX965 as an
infrared receiver. The infrared photodiode creates a
current relative to the amount of infrared light present.
This current creates a voltage across R1. When this
voltage level crosses the reference voltage applied to
the inverting input, the output transitions. Optional R3
provides additional hysteresis for noise immunity.
2-Cell to T T L Logic -Level S hifter
Figure 6 shows an application using the MAX965
to convert a 2-cell voltage-level signal into a TTL-
compatible signal. The supply voltage for the compara-
tor comes from the 2-cell supply. The output is pulled
up to a 5V supply.
V
ri
g
V
V
x R
x
R
R
R
R
V
falling
V
V
R
R
x V
+
3
R
Hysteresis
V
V
IN
THR
REF
IN
THF
THR
CC
4
THR
THF
sin :
1
+
:
=
+
+
=
=
1
1
1
2
1
3
4
1
R
V
V
x R
R
R
R
R
V
22
x
k
k
M
k
k
THR
REF
2
1
1
1
1
1
1
1
+
3
4
2
3 0
.
1.
22
1
+
2 2
.
10
14 76
.
=
=
=
GND
V
CC
V
CC
V
CC
V
CC
0.1
μ
F
OUT
R3
R
D
R
PULL-UP
REF
MAX965
HYST
Figure 5. IR Receiver
GND
V
CC
+5V
2 CELLS
0.1
μ
F
OUT
INPUT
REF
MAX965
HYST
Figure 6. 2-Cell to TTL Logic-Level Translator
相關(guān)PDF資料
PDF描述
MAX970EEE Single/Dual/Quad, Micropower, Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
MAX970ESD Single/Dual/Quad, Micropower, Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
MAX967ESA Octal Transparent D-type Latches With 3-State Outputs 20-CDIP -55 to 125
MAX968ESA Octal Bus Transceivers With 3-State Outputs 20-CDIP -55 to 125
MAX965 Single/Dual/Quad, Micropower, Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX97000EVKIT+ 功能描述:音頻 IC 開發(fā)工具 MAX97000 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
MAX97000EWA+T 功能描述:音頻放大器 Audio Subsystem w/ Mono Class D RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX97001EVKIT+ 功能描述:音頻 IC 開發(fā)工具 MAX97001 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
MAX97001EWP+T 功能描述:音頻放大器 Audio Subsystem w/ Mono Class D RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX97002EVKIT+ 功能描述:音頻 IC 開發(fā)工具 MAX97002 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
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