- 您现在的位置：买卖IC网 > Datasheet目录538 > ZNBG3113Q20TC (Diodes Inc)IC SW 3BIAS TONE H/V 2.2V 20QSOP Datasheet资料下载
参数资料
| 型号： | ZNBG3113Q20TC |
| 厂商： | Diodes Inc |
| 文件页数： | 11/17页 |
| 文件大小： | 0K |
| 描述： | IC SW 3BIAS TONE H/V 2.2V 20QSOP |
| 标准包装： | 2,500 |
| 功能： | 偏压控制器 |
| RF 型： | LNBs，PMR |
| 次要属性： | 带极性开关和音调检测 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
ZNBG3113
ZNBG3114
APPLICATIONS CIRCUIT
APPLICATIONS INFORMATION
The above is a partial application circuit for the ZNBG series showing all external components
required for appropriate biasing. The bias circuits are unconditionally stable over the full
temperature range with the associated FETs and gate and drain capacitors in circuit.
Capacitors C D and C G ensure that residual power supply and substrate generator noise is not
allowed to affect other external circuits which may be sensitive to RF interference. They also
serve to suppress any potential RF feedthrough between stages via the ZNBG device. These
capacitors are required for all stages used. Values of 10nF and 4.7nF respectively are
recommended however this is design dependent and any value between 1nF and 100nF could
be used.
The capacitors C NB and C SUB are an integral part of the ZNBGs negative supply generator. The
negative bias voltage is generated on-chip using an internal oscillator. The required value of
capacitors C NB and C SUB is 47nF. This generator produces a low current supply of approximately
-3 volts. Although this generator is intended purely to bias the external FETs, it can be used to
power other external circuits via the C SUB pin.
Resistor R CAL sets the drain current at which all external FETs are operated. If any bias control
circuit is not required, its related drain and gate connections may be left open circuit without
affecting the operation of the remaining bias circuits.
The ZNBG devices have been designed to protect the external FETs from adverse operating
conditions. With a JFET connected to any bias circuit, the gate output voltage of the bias circuit
can not exceed the range -3.5V to 1V under any conditions, including powerup and powerdown
transients. Should the negative bias generator be shorted or overloaded so that the drain current
of the external FETs can no longer be controlled, the drain supply to FETs is shut down to avoid
damage to the FETs by excessive drain current.
4-133
相关PDF资料 |
PDF描述 |
|---|---|
| ZNBG3115Q20TC | IC SW 3BIAS TONE H/V 2.2V 20QSOP |
| ZNBG3211Q20TC | IC SW 3BIAS TONE H/V 2.2V 20QSOP |
| ZNBG4001Q16 | GENERATOR FIXED BIAS |
| ZRC-8 | LED MOUNT CLIP LIGHT BAR STRIP |
| ZRS-8480-CW | LED COOL WHITE LIGHT BAR STRIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ZNBG3114 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:FET BIAS CONTROLLER WITH POLARISATION |
| ZNBG3114Q20 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION |
| ZNBG3115 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION |
| ZNBG3115_06 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION |
| ZNBG3115Q16 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION |
发布紧急采购，3分钟左右您将得到回复。