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參數資料
| 型號： | MAX923 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Ultra Low-Power, Single/Dual-Supply Comparators |
| 中文描述： | 超低功耗、單/雙電源比較器 |
| 文件頁數： | 8/16頁 |
| 文件大小： | 139K |
| 代理商： | MAX923 |
M
Ultra Low-Power,
S ingle/Dual-S upply Comparators
8
_______________________________________________________________________________________
_______________Detailed Desc ription
The MAX921–MAX924 comprise various combinations
of a micropower 1.182V reference and a micropower
comparator. The Typical Operating Circuit shows the
MAX921 configuration, and Figures 1a-1c show the
MAX922–MAX924 configurations.
Each comparator continuously sources up to 40mA,
and the unique output stage eliminates crowbar
glitches during output transitions. This makes them
immune to parasitic feedback (which can cause
instability) and provides excellent performance, even
when circuit-board layout is not optimal.
Internal hysteresis in the MAX921 and MAX923 provides
the easiest method for implementing hysteresis. It also
produces faster hysteresis action and consumes much
less current than circuits using external positive feedback.
Power-S upply and Input S ignal Ranges
This family of devices operates from a single +2.5V to
+11V power supply. The MAX921 and MAX924 have a
separate ground for the output driver, allowing
operation with dual supplies ranging from ±1.25V to
±5.5V. Connect V- to GND when operating the
MAX921 and the MAX924 from a single supply. The
maximum supply voltage in this case is still 11V.
For proper comparator operation, the input signal can
swing from the negative supply (V-) to within one volt of
the positive supply (V+ – 1V). The guaranteed
common-mode input voltage range extends from V- to
(V+ - 1.3V). The inputs can be taken above and below
the supply rails by up to 300mV without damage.
Operating the MAX921 and MAX924 at ±5V provides
TTL/CMOS compatibility when monitoring bipolar input
signals. TTL compatibility for the MAX922 and MAX923
is achieved by operation from a single +5V supply.
Low-Voltage Operation: V+ = 1V (MAX924 Only)
The guaranteed minimum operating voltage is 2.5V (or
±1.25V). As the total supply voltage is reduced below
2.5V, the performance degrades and the supply
current falls. The reference will not function below
OUTA
V-
INA+
INA-
OUTB
V+
INB+
INB-
MAX922
1
2
3
4
8
7
6
5
Figure 1a. MAX922 Functional Diagram
OUTA
V-
INA+
INB-
OUTB
V+
REF
HYST
MAX923
1
2
3
4
8
7
6
5
V-
Figure 1b. MAX923 Functional Diagram
OUTA
V+
INA-
INA+
OUTD
GND
IND+
IND-
MAX924
2
3
4
5
15
14
13
12
16
11
10
9
1
6
7
8
OUTB
INB-
INB+
REF
OUTC
INC+
INC-
V-
Figure 1c. MAX924 Functional Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| MAX923CPA | Ultra Low-Power, Single/Dual-Supply Comparators |
| MAX923CSA | Ultra Low-Power, Single/Dual-Supply Comparators |
| MAX923EPA | Ultra Low-Power, Single/Dual-Supply Comparators |
| MAX923ESA | Ultra Low-Power, Single/Dual-Supply Comparators |
| MAX924CPE | Ultra Low-Power, Single/Dual-Supply Comparators |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX9232 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Programmable Spread-Spectrum and DC-Balance 21-Bit Deserializer |
| MAX9232EUM | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Programmable Spread-Spectrum and DC-Balance 21-Bit Deserializer |
| MAX9232EUM-D | 制造商:Maxim Integrated Products 功能描述:21-BIT DC-BALANCED LVDS DESERIALIZERS WITH SP - Rail/Tube |
| MAX9232EUM-TD | 制造商:Maxim Integrated Products 功能描述:21-BIT DC-BALANCED LVDS DESERIALIZERS WITH SP - Tape and Reel |
| MAX9234 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers |
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