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| 型号： | ADG512BRZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH QUAD SPST 16SOIC |
| 产品培训模块： | iCMOS™ Switches and Multiplexers for Data Acquisition Switch Fundamentals |
| 标准包装： | 48 |
| 系列： | LC²MOS |
| 功能： | 开关 |
| 电路： | 4 x SPST - NO |
| 导通状态电阻： | 45 欧姆 |
| 电压电源： | 单/双电源 |
| 电压 - 电源，单路/双路(±)： | 3V，5V，±5V |
| 电流 - 电源： | 100pA |
| 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 |
| 产品目录页面： | 800 (CN2011-ZH PDF) |
ADG511/ADG512/ADG513
REV. C
–8–
VD OR VS – DRAIN OR SOURCE VOLTAGE – V
0.006
0.000
–0.006
–5
LEAKAGE
CURRENT
–
nA
0.004
0.002
–0.002
–0.004
VDD = +5V
VSS = –5V
TA = +25 C
ID (OFF)
ID (ON)
IS (OFF)
–4
–3
–2
–1
0
1
234
5
TPC 7. Leakage Currents as a Function of VD (VS)
FREQUENCY – Hz
110
100
60
100
10M
1k
CROSSTALK
–
dB
10k
100k
1M
90
80
70
VDD = +5V
VSS = –5V
TPC 8. Crosstalk vs. Frequency
APPLICATION
Figure 1 illustrates a precise sample-and-hold circuit. An AD845
is used as the input buffer while the output operational ampli-
fier is an OP07. During the track mode, SW1 is closed and the
output VOUT follows the input signal VIN. In the hold mode,
SW1 is opened and the signal is held by the hold capacitor CH.
Due to switch and capacitor leakage, the voltage on the hold
capacitor will decrease with time. The ADG511/ADG512/
ADG513 minimizes this droop due to its low leakage specifica-
tions. The droop rate is further minimized by the use of a poly-
styrene hold capacitor. The droop rate for the circuit shown is
typically 15
V/s.
A second switch, SW2, which operates in parallel with SW1, is
included in this circuit to reduce pedestal error. Since both
switches will be at the same potential, they will have a differen-
tial effect on the op amp OP07, which will minimize charge
injection effects. Pedestal error is also reduced by the compensation
network RC and CC. This compensation network also reduces
the hold time glitch while optimizing the acquisition time. Using
the illustrated op amps and component values, the pedestal
error has a maximum value of 5 mV over the
±3 V input range.
The acquisition time is 2.5
s while the settling time is 1.85 s.
+5V
–5V
2200pF
RC
75
CC
1000pF
CH
2200pF
VOUT
ADG511/
ADG512/
ADG513
SW1
SW2
S
D
+5V
–5V
AD845
+5V
–5V
VIN
OP07
Figure 1. Accurate Sample-and-Hold
TRENCH ISOLATION
The MOS devices that make up the ADG511A/ADG512A/
ADG513A are isolated from each other by an oxide layer
(trench) (see Figure 2). When the NMOS and PMOS devices
are not electrically isolated from each other, there exists the
possibility of “latch-up” caused by parasitic junctions between
CMOS transistors. Latch-up is caused when P-N junctions that
are normally reverse biased, become forward biased, causing
large currents to flow. This can be destructive.
CMOS devices are normally isolated from each other by Junction
Isolation. In Junction Isolation the N and P wells of the CMOS
transistors form a diode that is reverse biased under normal
operation. However, during overvoltage conditions, this diode
becomes forward biased. A Silicon-Controlled Rectifier (SCR)-
type circuit is formed by the two transistors, causing a signifi-
cant amplification of the current that, in turn, leads to latch-up.
With Trench Isolation, this diode is removed; the result is a
latch-up-proof circuit.
BURIED OXIDE LAYER
SUBSTRATE (BACKGATE)
T
R
E
N
C
H
T
R
E
N
C
H
T
R
E
N
C
H
P+
P-CHANNEL
N+
N-CHANNEL
P–
N–
VG
VD
VS
VG
VD
VS
Figure 2. Trench Isolation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADG512BRZ | 制造商:Analog Devices 功能描述:MULTIPLEXER IC NUMBER OF CHANNELS:4 |
| ADG512BRZ-REEL | 功能描述:IC SWITCH QUAD SPST 16SOIC 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:LC²MOS 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 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:带卷 (TR) |
| ADG512BRZ-REEL7 | 功能描述:IC SWITCH QUAD SPST 16SOIC 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:LC²MOS 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 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:带卷 (TR) |
| ADG512TQ | 功能描述:IC SWITCH QUAD SPST 16CDIP 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:LC²MOS 其它有关文件:STG4159 View All Specifications 标准包装:5,000 系列:- 功能:开关 电路:1 x SPDT 导通状态电阻:300 毫欧 电压电源:双电源 电压 - 电源，单路/双路(±):±1.65 V ~ 4.8 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:7-WFBGA，FCBGA 供应商设备封装:7-覆晶 包装:带卷 (TR) |
| ADG512TQ/883B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPST Analog Switch |
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