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參數(shù)資料
| 型號(hào)： | MAX4764EUB+T |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 14/15頁(yè) |
| 文件大小： | 0K |
| 描述： | IC SWITCH DUAL SPDT 10UMAX |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 功能： | 開(kāi)關(guān) |
| 電路： | 2 x SPDT |
| 導(dǎo)通狀態(tài)電阻： | 850 毫歐 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 1.8 V ~ 5.5 V |
| 電流 - 電源： | 10nA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-µMAX |
| 包裝： | 帶卷 (TR) |
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MAX4762–MAX4764/MAX4764A/MAX4765
Detailed Description
The MAX4762–MAX4764/MAX4764A/MAX4765 are low
on-resistance, low-voltage, dual SPDT analog switches
that operate from a +1.8V to +5.5V supply and are fully
specified for nominal 3.0V applications. The devices
feature a negative signal capability that allows signals
below ground to pass through without distortion and
have break-before-make switching.
The MAX4763/MAX4765 feature a comparator that can be
used for headphone or mute detection. The comparator
threshold is internally generated to be approximately 1/3
of VCC. The MAX4764/MAX4764A/MAX4765 feature an
internal shunt switch to discharge any capacitance at the
NO and NC connection points. This reduces the click-
and-pop sounds that occur when switching audio signals.
Applications Information
Digital Control Inputs
The MAX4762–MAX4764/MAX4764A/MAX4765 logic
inputs accept up to +5.5V, regardless of supply voltage.
For example, with a +3.3V supply, IN_ can be driven low
to GND and high to +5.5V allowing for mixing of logic
levels in a system. Driving IN_ rail-to-rail minimizes
power consumption. For a +1.8V supply voltage, the
logic thresholds are 0.5V (low) and 1.4V (high); for a
+5V supply voltage, the logic thresholds are 0.8V (low)
and 2.0V (high).
Analog Signal Levels
The on-resistance of the MAX4762–MAX4764/
MAX4764A/MAX4765 changes very little for analog input
signals across the entire supply voltage range (see the
Typical Operating Characteristics). The switches are bidi-
rectional, so the NO_, NC_, and COM_ pins can be either
inputs or outputs.
The MAX4762–MAX4764/MAX4764A/MAX4765 pass
signals as low as VCC - 5.5V, including signals below
ground with minimal distortion.
Comparator (MAX4763/MAX4765)
The MAX4763/MAX4765 include a comparator that can
be used for mute and headphone detection functions.
The positive terminal of the comparator is internally set to
VCC / 3. When the negative terminal (CMP-) is below the
threshold, the comparator output (CMPO) is a logic high.
When CMP- rises above VCC / 3, CMPO is a logic low.
The comparator threshold of VCC / 3 allows for detection
of headphones because headphone audio signals are
typically biased to VCC / 2.
Shunt Switch
(MAX4764/MAX4764A/MAX4765)
The 100
shunt switches on the MAX4764/MAX4764A/
MAX4765 automatically discharge any capacitance at
the NC_ or NO_ terminals when they are unconnected
to COM_. This reduces audible click-and-pop sounds
that occur when switching between audio sources.
Audible clicks and pops are caused when a step DC
voltage is switched into the speaker. By automatically
discharging the side that is not connected, any residual
DC voltage is removed, thereby reducing the clicks
and pops.
Power-Supply Sequencing and
Overvoltage Protection
Caution: Do not exceed the absolute maximum ratings
since stresses beyond the listed ratings may cause
permanent damage to the device.
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply VCC before applying
analog signals, especially if the analog signal is not
current-limited.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, printed circuit board
techniques, bump-pad layout, and recommended reflow
temperature profile, as well as the latest information on
reliability testing results, go to the Maxim’s website at
www.maxim-ic.com/ucsp and search for the Application
Note, “UCSP—A Wafer-Level Chip-Scale Package.”
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
8
_______________________________________________________________________________________
AUDIO
SOURCE 1
AUDIO
SOURCE 2
V+
3
MUTE
BUTTON
V+
MAX4765
OUT+
OUT-
OUT+
OUT-
NC1
NO1
NC2
NO2
CMPO
COM1
IN1
IN2
COM2
CMP-
8
SPEAKER
INPUT
SELECT
MUTE
SHUNT
SWITCH
Figure 1. Typical Operating Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
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| MAX4765ETC+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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