Battery Connector - Nokia RH-18 Manual

RH-18/36/38
Engine module
Signal
MIC2P (Differential input P)
MIC2N (Differential input N)
MICB2 (Microphone Bias)
External loading of MICB2
Signal
Output voltage swing*
* seen from transducer side
Common voltage level for
HF output (HF & HFCM) VCMHF
Load Resistance (HF to HFCM)
Load Capacitance (HF to HFCM)
Table 9: External speaker, differential output XEARP (HF) & XEARN (HFCM)
Signal Min.
HookInt 0V
HeadInt 0V

Battery connector

Battery temperature is estimated by measurement in Transceiver PWB with a separate
NTC resistor. Thus the Battery Interface has only 3 contacts.
Name
VBAT
GND
BSI
Page 16
Company confidential
Min. Nom
- -
- -
2.0 V 2.1 V
- -
Table 8: External microphone
Min. Nom
2.0 -
0.75 0.8
154 194
- -
Nom Max
- 2.86V (Vflash1)
- 2.86V (V flash1)
Table 10: Headset detection
Table 11: Battery connector
Description
Battery voltage terminal.
Battery ground terminal.
Battery size identification.
Nokia Corporation.
CCS Technical Documentation
Max Condition
100mV G=20dB
pp
100mV G=20dB
pp
2.25 V DC
600uA DC
Max Units Note
- Vpp Differential output, with 60 dB sig-
nal to total distortion ratio
0.85 V
234 W 2×22Ω (±5%) + 150Ω (±25%)
10 NF Load to GND
Condition Note
Headset button call control, connected
to UEM AD-converter
Accessory detection, connected to
UEM AD-converter
Test usage
Battery calibration.
Flash and local mode forcing.
Note
1,22kΩ to MIC1B (AC con-
dition)
1kΩ to GND
Unloaded
Issue 1 10/03