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参数资料
| 型号： | LTC6412CUF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/24页 |
| 文件大小： | 0K |
| 描述： | IC VGA ANLG-CNTRL 31DB 24-QFN |
| 标准包装： | 2,500 |
| 放大器类型： | 可变增益 |
| 电路数： | 1 |
| 输出类型： | 差分 |
| -3db带宽： | 800MHz |
| 电流 - 电源： | 110mA |
| 电流 - 输出 / 通道： | 70mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 3.6 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 包装： | 带卷 (TR) |
LTC6412
12
6412fa
PIN FUNCTIONS
GND (Pins 1, 8, 12, 15, 18, 20, 23): Ground. Pins are
connected to each other internally. For best RF performance,
all ground pins should be connected to the printed circuit
board ground plane.
+IN (Pin 2): Positive Signal Input Pin. Has an inter-
nally generated DC Bias. A 10nF DC blocking capacitor is
recommended.
–IN (Pin 3): Negative Signal Input Pin. Has an inter-
nally generated DC Bias. A 10nF DC blocking capacitor is
recommended.
VCM (Pins 4, 5): Input Common Mode Voltage Pins. Two
pins are tied together internally and serve as a virtual
ground for the differential inputs, +IN and –IN. Capaci-
tive decoupling to ground with 10nF close to the pins is
recommended to help terminate any residual common
mode input signal.
VCC (Pins 6, 13, 19, 24): Positive Power Supply. All
four pins must be tied to the same voltage, usually 3.3V.
Bypass each pin with 1000pF and 0.1μF capacitors close
to the pins.
DECL1 (Pin 7): Decoupling Pin. Serves to reduce internal
noise. Bypass to ground with a 0.1μF capacitor close to
the pin.
+VG (Pin9):PositiveGainControlPin.Inputsignalpinused
for positive mode gain control. Otherwise, pin is typically
connected to VREF for negative mode gain control. Pin is
internally pulled to ground with a 10k resistor. In positive
gain slope mode, the gain control slope is approximately
+32dB/V at 140MHz with a gain control range of 0.1V to
1.1V.
VREF (Pin 10): Internal Bias Voltage Pin. Typically tied to
–VG pin for positive gain control or tied to +VG for nega-
tive gain control. Determines the midpoint voltage of the
gain-vs-VG characteristic. Bypass to ground with 0.1μF
capacitor close to the pin. Not intended for use as an
external reference voltage.
–VG (Pin 11): Negative Gain Control Pin. Input signal pin
used for negative mode gain control. Otherwise, pin is
typically connected to VREF for positive mode gain con-
trol. Pin is internally pulled to ground with a 10k resistor.
In negative gain slope mode, the gain control slope is
approximately –32dB/V at 140MHz with a gain control
range of 0.1V to 1.1V.
DECL2 (Pin 14): Decoupling Pin. Serves to reduce internal
noise. Bypass to ground with a 1000pF capacitor close
to the pin.
–OUT (Pin 16): Negative Amplier Output Pin. A trans-
former with a center tap tied to VCC or a choke inductor
is recommended to conduct DC quiescent current to the
open-collector output device. For best performance, DC
bias voltage to –OUT must be within 100mV of VCC.
+OUT (Pin 17): Positive Amplier Output Pin. A trans-
former with a center tap tied to VCC or a choke inductor
is recommended to conduct DC quiescent current to the
open-collector output device. For best performance, DC
bias voltage to +OUT must be within 100mV of VCC.
EN (Pin 21): Output Signal Enable Pin. Pin is internally
pulled high with 100kΩ to VCC. Assert pin to a low volt-
age to enable the output amplier signal. Output amplier
impedance and DC current are not affected by the EN state.
Connect pin to ground if enable function is not used.
SHDN (Pin 22): Shutdown Pin. Pin is internally pulled high
with 100kΩ to VCC. Assert pin to a low voltage to shut
down the circuit and greatly reduce the supply current.
Proper sequencing of the EN and SHDN pins is required
to avoid non-monotonic output signal behavior. See
Applications Information section for details. Connect pin
to VCC if shutdown function is not used.
Exposed Pad (Pin 25): Ground. The Exposed Pad should
have multiple via holes to an underlying ground plane for
low inductance and good thermal dissipation.
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相关代理商/技术参数 |
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|---|---|
| LTC6412IUF | 制造商:LINER 制造商全称:Linear Technology 功能描述:800MHz, 31dB Range Analog-Controlled VGA |
| LTC6412IUF#PBF | 功能描述:IC VGA ANLG-CNTRL 31DB 24-QFN RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| LTC6412IUF#TRPBF | 功能描述:IC VGA ANLG-CNTRL 31DB 24-QFN RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| LTC6412IUFPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:800MHz, 31dB Range Analog-Controlled VGA |
| LTC6412IUFTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:800MHz, 31dB Range Analog-Controlled VGA |
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