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| 型號(hào)： | MAX4528EUA |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SWITCH DUAL SPDT 8UMAX |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 功能： | 開關(guān) |
| 電路： | 2 x SPDT |
| 導(dǎo)通狀態(tài)電阻： | 110 歐姆 |
| 電壓電源： | 單/雙電源 |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 12 V，± 2.7 V ~ 6 V |
| 電流 - 電源： | 1µA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-uMAX |
| 包裝： | 管件 |
MAX4528
Low-Voltage, Phase-Reversal
Analog Switch
_______________________________________________________________________________________
7
_______________Detailed Description
The MAX4528 is a phase-reversal analog switch consist-
ing of two normally open and two normally closed CMOS
analog switches arranged in a bridge configuration.
Analog signals are put into two input pins and taken out
of two output pins. A logic-level signal controls whether
the input signal is routed through normally or inverted. A
low-resistance DC path goes from inputs to outputs at all
times, yet isolation between the two signal paths is excel-
lent. Analog signals range from V- to V+.
These parts are characterized and optimized with ±5V
supplies, and can operate from a single supply.
The MAX4528 is designed for DC and low-frequency-
signal phase-reversal applications, such as chopper
amplifiers, modulator/demodulators, and self-zeroing or
self-calibrating circuits. Unlike conventional CMOS
switches externally wired in a bridge configuration,
both DC and AC symmetry are optimized with a small
8-pin configuration that allows simple board layout and
isolation of logic signals from analog signals.
Power-Supply Considerations
Overview
The MAX4528’s construction is typical of most CMOS
analog switches. It has three supply pins: V+, V-, and
GND. V+ and V- drive the internal CMOS switches and
set the analog-voltage limits on any switch. Reverse
ESD-protection diodes are internally connected
between each analog-signal pin and both V+ and V-.
One of these diodes conducts if any analog signal
exceeds V+ or V-.
Virtually all of the analog leakage current is through the
ESD diodes to V+ or V-. Although the ESD diodes on a
given signal pin are identical and therefore fairly well
balanced, they are reverse biased differently. Each is
biased by either V+ or V- and the analog signal. This
means their leakages vary as the signal varies. The
dif-
ference in the two diode leakages from the signal path
to the V+ and V- pins constitutes the analog-signal-path
leakage current. All analog leakage current flows to the
supply terminals, not to the other switch terminal. This
explains how both sides of a given switch can show
leakage currents of either the same or opposite polarity.
There is no connection between the analog-signal
paths and GND. The analog-signal paths consist of an
N-channel and P-channel MOSFET with their sources
and drains paralleled and their gates driven out-of-
phase to V+ and V- by the logic-level translators.
V+ and GND power the internal logic and logic-level
translator and set the input logic threshold. The logic-
level translator converts the logic levels to switched V+
and V- signals to drive the analog switches’ gates. This
drive signal is the only connection between GND and
the analog supplies. V+ and V- have ESD-protection
diodes to GND. The logic-level input has ESD protec-
tion to V+ and V-, but not to GND, so the logic signal
can go below GND (as low as V-) when bipolar sup-
plies are used.
Increasing V- has no effect on the logic-level thresholds,
but it does increase the drive to the internal P-channel
switches, reducing overall switch on-resistance. V- also
sets the negative limit of the analog-signal voltage.
The logic-level input pin (IN) has ESD-protection diodes
to V+ and V- but not to GND, so it can be safely driven
to V+ and V-. The logic-level threshold (VIN) is CMOS/
TTL compatible when V+ is between 4.5V and 12V
(see
Typical Operating Characteristics).
NAME
FUNCTION
5
V-
Negative Analog Supply-Voltage
Input. Connect V- to GND for single-
supply operation.
PIN
1
A
Analog-Switch Input Terminal A.
Connected to Y when IN is low; con-
nected to X when IN is high.
6
Y
Analog-Switch Output Terminal Y
7
X
Analog-Switch Output Terminal X
2
B
Analog-Switch Input Terminal B.
Connected to X when IN is low; con-
nected to Y when IN is high.
8
V+
Positive Analog/Digital Supply-Voltage
Input. Internally connected to sub-
strate.
4
IN
Logic-Level Control Inputs (see
Truth
Table)
3
GND
Ground. Connect GND to digital
ground. (Analog signals have no
ground reference; they are limited to
V+ and V-.)
Note:
Pins A, B, X, and Y are identical and interchangeable.
Any may be considered as an input or output; signals pass
equally well in either direction. However, AC symmetry is best
when A and B are the inputs and X and Y are the outputs.
Reduce AC balance in critical applications by using A and X or
A and Y as the input, and B and X or B and Y as the output.
_____________________Pin Description
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4528EUA+ | 功能描述:模擬開關(guān) IC Phase-Reversal Analog Switch 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(shí)間（最大值）: 關(guān)閉時(shí)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 |
| MAX4528EUA+T | 功能描述:模擬開關(guān) IC Phase-Reversal Analog Switch 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(shí)間（最大值）: 關(guān)閉時(shí)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 |
| MAX4528EUA-T | 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(shí)間（最大值）: 關(guān)閉時(shí)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 |
| MAX4529C/D | 功能描述:視頻開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
| MAX4529CPA | 功能描述:多路器開關(guān) IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
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