參數(shù)資料
型號： MAX996
廠商： Maxim Integrated Products, Inc.
英文描述： Hex 2-Input NAND Drivers 20-LCCC -55 to 125
中文描述： 高速、微功耗、低電壓、SOT23封裝、滿擺幅輸入/輸出比較器
文件頁數(shù)： 9/12頁
文件大?。?/td> 141K
代理商： MAX996
M
High-S peed, Mic ropower, Low-Voltage,
S OT 23, Rail-to-Rail I/O Comparators
_______________________________________________________________________________________
9
5) Calculate R2 as shown. For this example, choose an
8.2k
standard value:
1
V
V
1
3.0V
1.2 x 12k
12
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 pull-up 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 = V
REF
/ 1μA
or R3 = (V
REF
- V
CC
) / 1μA - R4. Use the smaller of
the two resulting resistor values.
2) Choose the hysteresis band required (V
HB
). For this
example, choose 50mV.
3) Calculate R1 according to the following equation:
R1 = (R3 + R4) x (V
HB
/ V
CC
)
4) Choose the trip point for V
IN
rising (V
THR
; V
THF
is
the trip point for V
IN
falling). This is the threshold
voltage at which the comparator switches its output
from low to high as V
IN
rises above the trip point.
5) Calculate R2 as follows:
6) Verify trip voltages and hysteresis as follows:
Circ uit 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 printed circuit board with an unbroken, low-
inductance ground plane.
2) Place a decoupling capacitor (a 0.1μF ceramic
capacitor is a good choice) as close to V
CC
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 printed circuit
board instead of using a socket.
V rising: V
= V
x R1 x
1
R1
V falling
THR
REF
1
2
R
+
+
+
:
+
3
=
=
1
3
4
1
4
R
R
V
V
R
R
x V
R
Hysteresis
V
V
THF
THR
CC
THR
THF
R2 =
1
V
V
THR
REF
+
x R
R
R
R
1
1
1
1
3
4
V rising: V
= V
x R1 x
1
R1
V falling
THR
REF
+
+
:
1
R
=
=
1
2
R
1
3
R
3
V
V
x V
R
Hysteresis
V
V
THF
THR
CC
THR
THF
R2 =
R2 =
THR
REF
.
8 03
x R
R
R
k
M
k
1
1
1
1
3
1
1
2 2
=
V
EE
V
CC
OUT
R3
R2
R1
R4
0.1
μ
F
V
REF
V
IN
V
CC
MAX988
MAX992
MAX996
Figure 2. Additional Hysteresis (MAX988/MAX992/MAX996)
相關(guān)PDF資料
PDF描述
MAX996ESD Hex 2-Input NAND Drivers 20-CDIP -55 to 125
MAX991ESA Wirewound Potentiometer; Series:LW; Track Resistance:1ohm; Resistance Tolerance:+/- 10%; Power Rating:5W; Operating Temperature Range:-30 C to +105 C; Resistor Element Material:Wirewound; Adjustment Type:Knob; No. of Turns:1 RoHS Compliant: Yes
MAX992ESA Wirewound Potentiometer; Series:LW; Track Resistance:50ohm; Resistance Tolerance:+/-10%; Power Rating:5W; Operating Temperature Range:-30 C to +105 C; Resistor Element Material:Wirewound; Adjustment Type:Knob; No. of Turns:1 RoHS Compliant: Yes
MAX992EUA Wirewound Potentiometer; Series:M; Track Resistance:10ohm; Resistance Tolerance:+/- 10%; Power Rating:4W; Operating Temperature Range:-55 C to +105 C; Resistor Element Material:Wirewound; Adjustment Type:Knob; No. of Turns:1 RoHS Compliant: Yes
MAX9981EVKIT Evaluation Kit for the MAX9981
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9960BCTM 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX9960BCTM+D 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX9960BCTM+TD 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX9960BCTM-D 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX9960BCTM-TD 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
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