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參數資料
| 型號： | ISL83699IR |
| 廠商： | Intersil |
| 文件頁數： | 9/11頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SWITCH QUAD SPDT 16QFN |
| 標準包裝： | 100 |
| 功能： | 開關 |
| 電路： | 4 x SPDT |
| 導通狀態(tài)電阻： | 450 毫歐 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 1.65 V ~ 3.6 V |
| 電流 - 電源： | 50nA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VFQFN 裸露焊盤 |
| 供應商設備封裝： | 16-QFN-EP（3x3） |
| 包裝： | 管件 |
7
FN6094.3
November 5, 2004
Detailed Description
The ISL83699 is a bidirectional, dual double-pole/
double-throw (DPDT) analog switch that offers precise
switching capability from a single 1.65V to 3.6V supply with
low on-resistance (0.26
) and high speed operation
(tON =10ns, tOFF = 7ns). The device is especially well suited
for portable battery powered equipment due to its low
operating supply voltage (1.65V), low power consumption
(2.7
W max), low leakage currents (45nA max), and the tiny
QFN and TSSOP packages. The ultra low on-resistance and
Ron flatness provide very low insertion loss and distortion to
applications that require signal reproduction.
Supply Sequencing and Overvoltage Protection
With any CMOS device, proper power supply sequencing is
required to protect the device from excessive input currents
which might permanently damage the IC. All I/O pins contain
ESD protection diodes from the pin to V+ and to GND (See
Figure 8). To prevent forward biasing these diodes, V+ must
be applied before any input signals, and the input signal
voltages must remain between V+ and GND. If these
conditions cannot be guaranteed, then one of the following
two protection methods should be employed.
Logic inputs can easily be protected by adding a 1k
resistor in series with the input (See Figure 8). The resistor
limits the input current below the threshold that produces
permanent damage, and the sub-microamp input current
produces an insignificant voltage drop during normal
operation.
This method is not acceptable for the signal path inputs.
Adding a series resistor to the switch input defeats the
purpose of using a low RON switch, so two small signal
diodes can be added in series with the supply pins to provide
overvoltage protection for all pins (See Figure 8). These
additional diodes limit the analog signal from 1V below V+ to
1V above GND. The low leakage current performance is
unaffected by this approach, but the switch signal range is
reduced and the resistance may increase, especially at low
supply voltages.
Power-Supply Considerations
The ISL83699 construction is typical of most single supply
CMOS analog switches, in that they have two supply pins:
V+ and GND. V+ and GND drive the internal CMOS
switches and set their analog voltage limits. Unlike switches
with a 4V maximum supply voltage, the ISL83699 4.7V
maximum supply voltage provides plenty of room for the
10% tolerance of 3.6V supplies, as well as room for
overshoot and noise spikes.
The minimum recommended supply voltage is 1.65V but the
part will operate with a supply below 1.5V. It is important to
note that the input signal range, switching times, and on-
resistance degrade at lower supply voltages. Refer to the
electrical specification tables and Typical Performance
curves for details.
V+ and GND also power the internal logic and level shifters.
The level shifters convert the input logic levels to switched
V+ and GND signals to drive the analog switch gate
terminals.
This family of switches cannot be operated with bipolar
supplies, because the input switching point becomes
negative in this configuration.
Logic-Level Thresholds
This switch family is 1.8V CMOS compatible (0.5V and 1.4V)
over a supply range of 2.0V to 3.6V (See Figure 17). At 3.6V
the VIH level is about 1.27V. This is still below the 1.8V
CMOS guaranteed high output minimum level of 1.4V, but
noise margin is reduced.
The digital input stages draw supply current whenever the
digital input voltage is not at one of the supply rails. Driving
the digital input signals from GND to V+ with a fast transition
time minimizes power dissipation.
High-Frequency Performance
In 50
systems, the signal response is reasonably flat even
past 30MHz with a -3dB bandwidth of 104MHz (See Figure
15). 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, while Crosstalk indicates
the amount of feedthrough from one switch to another.
Figure 16 details the high Off Isolation and Crosstalk
rejection provided by this part. At 100kHz, Off Isolation is
about 68dB in 50
systems, decreasing approximately 20dB
per decade as frequency increases. Higher load
impedances decrease Off Isolation and Crosstalk rejection
due to the voltage divider action of the switch OFF
impedance and the load impedance.
FIGURE 8. OVERVOLTAGE PROTECTION
GND
VCOM
VNO or NC
OPTIONAL PROTECTION
V+
INX
DIODE
OPTIONAL PROTECTION
DIODE
OPTIONAL
PROTECTION
RESISTOR
ISL83699
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| ISL83699IR-T | 功能描述:IC SWITCH QUAD SPDT 16QFN RoHS:否 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 標準包裝:48 系列:- 功能:開關 電路:4 x SPST - NO 導通狀態(tài)電阻:100 歐姆 電壓電源:單/雙電源 電壓 - 電源，單路/雙路(±):2 V ~ 12 V，±2 V ~ 6 V 電流 - 電源:50nA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:管件 |
| ISL83699IRZ | 功能描述:IC SWITCH QUAD SPDT 16QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:36 系列:- 功能:多路復用器 電路:2 x 4:1 導通狀態(tài)電阻:75 歐姆 電壓電源:單/雙電源 電壓 - 電源，單路/雙路(±):2 V ~ 12 V，±2 V ~ 6 V 電流 - 電源:- 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:20-SOIC W 包裝:管件 |
| ISL83699IRZ-T | 功能描述:IC SWITCH QUAD SPDT 16QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 標準包裝:1 系列:- 功能:開關 電路:2 x SPST - NC/NO 導通狀態(tài)電阻:8 歐姆 電壓電源:單電源 電壓 - 電源，單路/雙路(±):2.3 V ~ 4.3 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-UFQFN 供應商設備封裝:8-迷你型QFN（1.4x1.4） 包裝:剪切帶 (CT) 其它名稱:DG2738DN-T1-E4CT |
| ISL83699IV | 功能描述:IC SWITCH QUAD SPDT 16TSSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 標準包裝:48 系列:- 功能:開關 電路:4 x SPST - NO 導通狀態(tài)電阻:100 歐姆 電壓電源:單/雙電源 電壓 - 電源，單路/雙路(±):2 V ~ 12 V，±2 V ~ 6 V 電流 - 電源:50nA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:管件 |
| ISL83699IV-T | 功能描述:IC SWITCH QUAD SPDT 16TSSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 標準包裝:48 系列:- 功能:開關 電路:4 x SPST - NO 導通狀態(tài)電阻:100 歐姆 電壓電源:單/雙電源 電壓 - 電源，單路/雙路(±):2 V ~ 12 V，±2 V ~ 6 V 電流 - 電源:50nA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:管件 |
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