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參數(shù)資料
| 型號： | DDC114TK-7 |
| 廠商： | DIODES INC |
| 元件分類： | 功率晶體管 |
| 英文描述： | NPN PRE-BIASED SMALL SIGNAL SOT-26 DUAL SURFACE MOUNT TRANSISTOR |
| 中文描述： | 100 mA, 50 V, 2 CHANNEL, NPN, Si, SMALL SIGNAL TRANSISTOR |
| 封裝： | PLASTIC PACKAGE-6 |
| 文件頁數(shù)： | 8/30頁 |
| 文件大?。?/td> | 389K |
| 代理商： | DDC114TK-7 |
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SBAS255A JUNE 2004 REVISED NOVEMBER 2004
THEORY OF OPERATION
The block diagram of the DDC114 is shown in Figure 1.
The device contains four identical input channels that
perform the function of current-to-voltage integration
followed by a multiplexed A/D conversion. Each input has
two integrators so that the current-to-voltage integration
can be continuous in time. The output of the eight
integrators are switched to two delta-sigma (
Σ
)
converters via two four-input multiplexers. With the
www.ti.com
8
DDC114 in the continuous integration mode, the output of
the integrators from one side of both of the inputs will be
digitized while the other two integrators are in the
integration mode, as illustrated in the timing diagram in
Figure 2. This integration and A/D conversion process is
controlled by the system clock, CLK. The results from side
A and side B of each signal input are stored in a serial
output shift register. The DVALID output goes low when
the shift register contains valid data.
Dual
Switched
Integrator
Dual
Switched
Integrator
Σ
Modulator
Digital
Filter
Digital
Input/Output
FORMAT
DCLK
DCLK
DVALID
DOUT
DOUT
DIN
DIN
Control
IN3
IN1
VREF
DVDD
DGND
AGND
AVDD
Dual
Switched
Integrator
Dual
Switched
Integrator
Σ
Modulator
Digital
Filter
IN4
IN2
CLK
CONV
RANGE0
RANGE1
RANGE2
TEST
CLK_4X
HISPD/LOPWR
RESET
Figure 1. DDC114 Block Diagram
IN1 and IN2, Integrator A
IN1 and IN2, Integrator B
IN3 and IN4, Integrator A
IN3 and IN4, Integrator B
Conversion in Progress
DVALID
IN1B
IN2B
IN3B
IN4B
IN1A
IN2A
Integrate
Integrate
Integrate
Integrate
Integrate
Integrate
Integrate
Integrate
IN3A
IN4A
IN1B
IN2B
IN3B
IN4B
IN1A
IN2A
IN3A
IN4A
Figure 2. Basic Integration and Conversion Timing for the DDC114 (continuous mode)
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相關代理商/技術參數(shù) |
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|---|---|
| DDC114TK-7-F | 制造商:Diodes Incorporated 功能描述:PREBIASED TRANSISTOR SOT-26 R1 ONLY NPN 300MW 10KOHMS ROHS 3 - Tape and Reel |
| DDC114TU | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:NPN PRE-BIASED SMALL SIGNAL SOT-363 DUAL SURFACE MOUNT TRANSISTOR |
| DDC114TU-7 | 功能描述:開關晶體管 - 偏壓電阻器 DUAL NPN 200mW RoHS:否 制造商:ON Semiconductor 配置: 晶體管極性:NPN/PNP 典型輸入電阻器: 典型電阻器比率: 安裝風格:SMD/SMT 封裝 / 箱體: 直流集電極/Base Gain hfe Min:200 mA 最大工作頻率: 集電極—發(fā)射極最大電壓 VCEO:50 V 集電極連續(xù)電流:150 mA 峰值直流集電極電流: 功率耗散:200 mW 最大工作溫度: 封裝:Reel |
| DDC114TU-7-F | 功能描述:開關晶體管 - 偏壓電阻器 DUAL NPN 200mW RoHS:否 制造商:ON Semiconductor 配置: 晶體管極性:NPN/PNP 典型輸入電阻器: 典型電阻器比率: 安裝風格:SMD/SMT 封裝 / 箱體: 直流集電極/Base Gain hfe Min:200 mA 最大工作頻率: 集電極—發(fā)射極最大電壓 VCEO:50 V 集電極連續(xù)電流:150 mA 峰值直流集電極電流: 功率耗散:200 mW 最大工作溫度: 封裝:Reel |
| DDC114YH | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:NPN PRE-BIASED SMALL SIGNAL SOT-563 DUAL SURFACE MOUNT TRANSISTOR |
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