参数资料
型号: MICRF007YM
厂商: Micrel Inc
文件页数: 10/13页
文件大小: 0K
描述: IC RECEIVER UHF LOW POWER 8SOIC
标准包装: 95
系列: QwikRadio®
频率: 300MHz ~ 440MHz
灵敏度: -96dBm
数据传输率 - 最大: 2.1 kbps
调制或协议: ASK,OOK
应用: RKE
电流 - 接收: 3mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
特点: 自动调谐
电源电压: 4.75 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
产品目录页面: 571 (CN2011-ZH PDF)
其它名称: 576-1334
MICRF007
Micrel
Compa-
rator
1.5A
VDD
67.5A
REFOSC Pin
REFOSC
30pF
Active
Bias
200k
250 ?
VDDBB
Timout
CAGC
30pF
VSSBB
30μA
VSSBB
15A
675A
Figure 8. REFOSC Pin
Q2
VSS
Figure 6. C AGC Pin
DO Pin
The output stage for the digital output (DO) in Figure 7.
The output is a 20μA push and 18μA pull switched-current
stage. This output stage is capable of driving CMOS loads.
An external buffer-driver is recommended for driving high
capacitance loads.
VDD
The reference oscillator (REFOSC) input circuit is shown in
Figure 8. Input impedance is high (290kΩ). This is a Colpitts
oscillator with internal 30pF capacitors. This input is intended
to work with standard crystal connected from this pin to the
VSS pin. The nominal DC bias voltage on this pin is 1.4V.
SHUT Pin
VDDBB
Q1
to Internal
VSSBB Circuits
20μA
SHUT
Q3
Compa-
rator
DO
VSSBB
Figure 9. SHUT Pin
VSS
18μA
Control input circuitry is shown in Figure 9. The standard
input is a logic inverter constructed with minimum geometry
MOSFETs (Q2, Q3). P-Channel MOSFET Q1 is a large chan-
nel length device, which functions essentially as a “weak”
pull-up to VDD. Typical pull-up current is 5μA.
Figure 7. DO Pin
M9999-021705
10
February 17, 2005
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