Datasheet > TQM879026

TQM879026

更新时间： 2024-01-14 13:06:25

品牌	Logo	应用领域
TRIQUINT		放大器
页数	文件大小	规格书
8页	517K
描述
0.7â4 GHz Â¼W Digital Variable Gain Amplifier

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技术参数
数据手册

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TQM879026 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	compliant	风险等级：	5.69
射频/微波设备类型：	WIDE BAND MEDIUM POWER	Base Number Matches：	1

TQM879026 数据手册

TQM879026

0.7−4 GHz ¼W Digital Variable Gain Amplifier

Serial Control Interface

The TQM879026 has a CMOS SPI^TMinput compatible serial interface. This serial control interface converts the

serial data input stream to parallel output word. The input is 3-wire (CLK, LE and SID) SPI^TMinput compatible. At

power up, the serial control interface resets the DSA to the minimum gain state. The 6-bit SID (Serial Input Data)

word is loaded into the register on rising edge of the CLK, MSB first. When LE is high, CLK is internally disabled.

Serial Control Timing Characteristics (Test conditions: V_DD= +5 V, Temp.=25°C)

Units

MHz

Parameter

Condition

Min

Max

Clock Frequency

50% Duty Cycle

LE Setup Time, t_LESUP

LE Pulse Width, t_LEPW

SID set-up time, t_SDSUP

SID hold-time, t_SDHLD

LE Pulse Spacing t_LE

Propagation Delay t_PLO

after last CLK rising edge

before CLK rising edge

after CLK rising edge

LE to LE pulse spacing

LE to Parallel output valid

630

Serial Control DC Logic Characteristics (Test conditions: V_DD= +5 V, Temp.=25°C)

Parameter

Condition

Min

Max

0.8

Units

Input Low State Voltage, V_IL

Input High State Voltage, V_IH

Output High State Voltage, V_OH

Output Low State Voltage, V_OL

Input Current, I_IH/ I_IL

2.4

2.0

V_DD

0.8

On SOD pin

On SID, LE and CLK pins

−10

+10

µA

SID Control Logic Truth Table

Timing Diagram

CLK is internally disabled when LE is high

6-Bit Control Word

Gain Relative to

Maximum Gain

MSB

LSB

D5-D0

MSB-LSB

D5-D0

MSB-LSB

Maximum Gain

−0.5 dB

−1 dB

t_PLO

−2 dB

CLK

−4 dB

−8 dB

−16 dB

−31.5 dB

SID

t_LESUP

t_SDSUP

t_SDHLD

t_LEPW

Any combination of the possible 64 states will provide a

reduction in gain of approximately the sum of the bits

selected.

Data Sheet: Rev B 12/14/2012

- 3 of 8 -

Disclaimer: Subject to change without notice

Connecting the Digital World to the Global Network^®

1 234 5 6 7 8

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