F2M03MLA-S01-R1A Free2Move, F2M03MLA-S01-R1A Datasheet - Page 29

• Manufacturer Part Number: F2M03MLA-S01-R1A
• Description: MOD BLUETOOTH MULTIMEDIA W/ANT
• Manufacturer: Free2Move

Specifications of F2M03MLA-S01-R1A

• Frequency: 2402MHz ~ 2480MHz
• Data Rate - Maximum: 1.5Mbps
• Modulation Or Protocol: Bluetooth v2.0, Class 1, 2 & 3
• Power - Output: 8dBm
• Sensitivity: -81dBm
• Voltage - Supply: 3.1 V ~ 3.6 V
• Current - Transmitting: 75mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -
• Current - Receiving: -
• Other names: 647-1028-2; F2M03MLA-S04-R1A

Rev: c
Low power Multimedia Bluetooth™ Module with antenna F2M03MLA
Datasheet
6.2.12 Microphone Input
The audio-input is intended for use from 1µV@94dB SPL to about 10µV@94dB SPL. With biasing-resistors
R1 and R2 equal to 1kΩ, this requires microphones with sensitivity between about –40dBV/Pa and
-60dBV/Pa. The microphone for each channel should be biased as shown in the figure below.
Microphone bias
F2M03MLA
Microphone Biasing (Left Channel Shown)
The input impedance at AUDIO_IN_N_LEFT, AUDIO_IN_P_LEFT, AUDIO_IN_N_RIGHT and
AUDIO_IN_P_RIGHT is typically 20kΩ. C1 and C2 should be 47nF. R1 sets the microphone load
impedance and is normally in a range of 1 to 2 kΩ. R2, C3 and C4 improve the supply rejection by
decoupling supply noise from the microphone. Values should be selected as required in the specification.
R2 may be connected to a convenient supply (typically VDD).
6.2.13 Line Input
If the input gain is set to less than 21dB F2M03MLA automatically selects line input mode. In this
mode the input impedance at AUDIO_IN_N_LEFT, AUDIO_IN_P_LEFT, AUDIO_IN_N_RIGHT and
AUDIO_IN_P_RIGHT are increased to 130kΩ typically. In line-input mode, the full-scale input signal is
about 400mV rms. The figures below show two circuits for line input operation and show connections for
either differential or single ended inputs.
Differential Input (Left channel shown)
Single ended input (Left channel shown)
© 2007 Free2move AB
Page 29(29)