Enabler II-G Assiste GPS Integration Guide - Farnell

Enfora Enabler III-G
Modem Integration Guide
6.6.21. Handset Microphone Bias Output (Pin 63)
Mic Bias Output Parameter/Conditions Min Typ Max Units
Bias Voltage on Mic(+) Set to 2.0 V 1.9 2.1 Vdc
Set to 2.5 V 2.4 2.6 Vdc
Mic Bias Current
Capability
2.0 mA
6.6.22. Handset Speaker Output (Pins 71, 73)
Pin Name Pin Number Signal Direction Description
EARP 71 O Earphone positive output
EARN 73 O Earphone negative output
The earphone amplifier provides a full differential signal on the terminals EARP and EARN (Earphone).
Handset Spkr Output Parameter/Conditions Min Typ Max Units
Maximum Differential
Resistive Load
Output Swing 3.9 VPP
Output Swing 1.5 VPP
120
33
Ω
Ω
Maximum Differential
Capacitive Load
100 pF
Common Mode
Minimum Resistive Load
At Internal Speaker (+) or (-) 200 kΩ
Common Mode
Maximum Capacitive
Load
At Internal Speaker (+) or (-) 50 pF
Amplifier Gain EARG = 1
1
DB
EARG = 0
-11
dB
Parameter Test Conditions Min Typ Max Units
Earphone output swing at
EARP-EARN
Distortion ≤ 2% and 120 Ω, VSP input
level = +3 dBm0, amp gain = -11 dB
0.98 VP-P
Distortion ≤ 2% and 33 Ω, VSP input level
= -5.34 dBm0, amp gain = -11 dB
0.38
Distortion ≤ 2% and 120 Ω, I2S input level
= +3 dBm0, amp gain = -11 dB
0.93
Distortion ≤ 2% and 120 Ω, VSP input
level = +3 dBm0, amp gain = 1 dB
3.1 3.92
Distortion ≤ 2% and 33 Ω, VSP input level
= -5.34 dBm0, amp gain = 1 dB
1.2 1.5
Distortion ≤ 2% and 120 Ω, I2S input level
= +3 dBm0, amp gain = 1 dB
2.96 3.7
Earphone amplifier gain EARG = 1 1 dB
EARG = 0 -11 dB
Earphone amplifier state in
High
power down
Z
Earphone amplifier power 1 kHz, 100 mVp-p
supply rejection
50
dB
GSM0308PB001 56 Version 1.03– 7/17/2007