MICRF007BM Micrel Inc, MICRF007BM Datasheet - Page 10

• Manufacturer Part Number: MICRF007BM
• Description: IC RECEIVER UHF LOW POWER 8SOIC
• Manufacturer: Micrel Inc

Specifications of MICRF007BM

• Frequency: 300MHz ~ 440MHz
• Sensitivity: -96dBm
• Data Rate - Maximum: 2.1 kbps
• Modulation Or Protocol: ASK, OOK
• Applications: RKE
• Current - Receiving: 3mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Features: Automatic Tuning
• Voltage - Supply: 4.75 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Receiving Current: 5.7mA
• Data Rate: 3.2Kbps
• Modulation Type: ASK, OOK
• Frequency Range: 300MHz To 440MHz
• Sensitivity Dbm: -99dBm
• Rf Ic Case Style: SOIC
• No. Of Pins: 8
• Operating Band Frequency: 300 to 440MHz
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3.94mm
• Product Height (mm): 1.48mm
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Not Compliant

MICRF007
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.
M9999-021705
Timout
Compa-
rator
Figure 6. C
Compa-
rator
Figure 7. DO Pin
1.5A
15A
VDD
VSS
AGC
VDD
VSS
67.5A
675A
Pin
20µA
18µA
DO
CAGC
10
REFOSC Pin
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
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.
SHUT
Figure 8. REFOSC Pin
REFOSC
VSSBB
Figure 9. SHUT Pin
30pF
30pF
VDDBB
VSSBB
Q1
Active
Bias
VSSBB
250
200k
Q2
Q3
30µA
to Internal
Circuits
VDDBB
VSSBB
February 17, 2005
Micrel