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参数资料
| 型号： | ISL84517IBZ |
| 厂商： | Intersil |
| 文件页数： | 7/10页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH SPST 8SOIC |
| 标准包装： | 980 |
| 功能： | 开关 |
| 电路： | 1 x SPST- NC |
| 导通状态电阻： | 20 欧姆 |
| 电压电源： | 双电源 |
| 电压 - 电源，单路/双路(±)： | ±1.5 V ~ 6 V |
| 电流 - 电源： | 40µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
6
unaffected by this approach, but the switch resistance may
increase, especially at low supply voltage.
Power-Supply Considerations
The ISL8451X construction is typical of most CMOS analog
switches, except that there are only two supply pins: V+ and
V-. The power supplies need not be symmetrical for useful
operation. As long as the total supply voltage (V+ to V-,
including supply tolerances, overshoot, and noise spikes) is
less than the15V maximum supply rating, and the digital
input switching point remains reasonable (see “Logic-Level
Thresholds” section), the ISL84516, ISL84517 function well.
The 15V maximum supply rating provides the designer of
12V systems much greater flexibility than switches with a
13V maximum supply voltage.
The minimum recommended supply voltage is
±1.5V. It is
important to note that the input signal range, switching times,
and on-resistance degrade at lower supply voltages, and the
digital input VIL becomes negative at VS ≤ ±2V. Refer to the
“Typical Performance” curves for details.
V+ and V- power the internal CMOS switches and set their
analog voltage limits. These supplies also power the internal
logic and level shifters. The level shifters convert the input
logic levels to switched V+ and V- signals to drive the analog
switch gate terminals.
This family of switches is not recommended for single supply
applications. For single supply, similar performance, pin
compatible, TTL compatible versions of these switches, see
the ISL84514, ISL84515 data sheet.
Logic-Level Thresholds
Due to the lack of a GND pin, the switching point of the
digital input is referenced predominantly to V+. The digital
input is CMOS compatible at
±5V supplies, and is TTL
compatible for
±3.3V supplies. For other supply
combinations refer to Figure 11.
The switching point has a very low temperature sensitivity,
and changes by only 100mV from 85oC to -40oC, regardless
of supply voltage.
High-Frequency Performance
In 5
0 systems, signal response is reasonably flat to
30MHz, with a -3dB bandwidth of nearly 400MHz (see
Figure 13). Figure 13 also illustrates that the frequency
response is very consistent over a wide V+ range, and for
varying analog signal levels.
An OFF switch acts like a capacitor and passes higher
frequencies with less attenuation, resulting in signal
feedthrough from a switch’s input to its output. OFF Isolation
is the resistance to this feedthrough. Figure 14 details the
high OFF Isolation provided by this family. At 10MHz, OFF
Isolation is about 50dB in 5
0 systems, decreasing
approximately 20dB per decade as frequency increases.
Higher load impedances decrease OFF Isolation due to the
voltage divider action of the switch OFF Impedance and the
load impedance.
Leakage Considerations
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 the analog leakage current comes from 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
will vary as the signal varies. The difference in the two diode
leakages to the V+ and V- pins constitutes the analog-signal-
path leakage current. All analog leakage current flows
between each pin and one of the supply terminals, not to the
other switch terminal. This is why both sides of a given
switch can show leakage currents of the same or opposite
polarity. There is no connection between the analog-signal
paths and V+ or V-.
V-
VCOM
VNO or NC
OPTIONAL PROTECTION
V+
IN
DIODE
OPTIONAL PROTECTION
DIODE
OPTIONAL
PROTECTION
RESISTOR
FIGURE 6. OVERVOLTAGE PROTECTION
ISL84516, ISL84517
相关PDF资料 |
PDF描述 |
|---|---|
| ISL84516IBZ | IC SWITCH SPST 8SOIC |
| ISL84514IBZ | IC SWITCH SPST 8SOIC |
| ISL43111IBZ | IC SWITCH SPST 8SOIC |
| ISL43110IBZ | IC SWITCH SPST 8SOIC |
| PI2DBS212QEX | IC MUX/DEMUX 2X1 1.8V 20QSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL84517IBZ-T | 功能描述:IC SWITCH SPST 8SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:36 系列:- 功能:多路复用器 电路:2 x 4:1 导通状态电阻:75 欧姆 电压电源:单/双电源 电压 - 电源，单路/双路(±):2 V ~ 12 V，±2 V ~ 6 V 电流 - 电源:- 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 供应商设备封装:20-SOIC W 包装:管件 |
| ISL84517IH-T | 功能描述:IC SWITCH SPST SOT23-5 RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:48 系列:- 功能:开关 电路:4 x SPST - NO 导通状态电阻:100 欧姆 电压电源:单/双电源 电压 - 电源，单路/双路(±):2 V ~ 12 V，±2 V ~ 6 V 电流 - 电源:50nA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
| ISL84517IHZ-T | 功能描述:IC SWITCH SPST SOT23-5 RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:2,500 系列:- 功能:视频交叉点开关 电路:1 x 8:6 导通状态电阻:- 电压电源:单电源 电压 - 电源，单路/双路(±):3.135 V ~ 5.25 V 电流 - 电源:55mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:24-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:24-TSSOP 包装:带卷 (TR) 产品目录页面:1214 (CN2011-ZH PDF) 其它名称:FMS6502MTC24XTR |
| ISL84521 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Low-Voltage, Single and Dual Supply, Quad SPST, Analog Switches |
| ISL84521_04 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Low-Voltage, Single and Dual Supply, Quad SPST, Analog Switches |
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