A good public catch: 7.Hagar: NMP70731, dualband direct conversion (zero IF) tranceiver.
Trucos para los Nokia 3310
movil-libre.com
There was some written in finish about the nokia ZIF in 1998 when it already had
been in commercial massproduction, the five guy team who had worked on it got
some engineering attention.
That is, the museal 1610 used ZIF at that time of the dinosaures.
Here is the link to the magazine, feel to search for Nokia during 1998
tekniikanmaailma.fi
Ilmarinen
One of the few respected hifi-video-car-consumer electronics magazines in the world, have achieved
a lot in terms of educating the regular consumer, not just hyping.
They just tested a bunch of the now available GPRS phones, but only in finnish
Some keywords to learn from movile-libre
1.Panasonic GP6 Dual SAW filter Fc1 =
942.5MHz, bandwidth 35MHz, Fc2 =
1842.5MHz bandwith 75MHz.
2.See 1
3.Diplexer (RXTX switch)
4.On/off switch
5.Hitachi PF08109BN dual frequency
PA
6.SAW filter Fc = 897.5MHz, +/-
17.5MHz
7.Hagar: NMP70731, dualband direct
conversion (zero IF) tranceiver.
8.VCO 3420-3840MHz
9.CCONT: NMP70719 Multi functional
power management IC, SIM controller,
RTC, watchdog
10.Texas Instruments MAD2WD1:
Microcontroller and DSP, based on
ARM7TDMI.
11.CHAPS; Battery charger
12.Contact strips to Vibra motor
13.Contacts to SIM connector
14.Microphone contacts
15.Various contacts to bottom connector,
like power
16.NMP70433: TM23A; User interface
controlling Keyboard and LCD
backlight, vibrator and buzzer
17.Samsung K6F1016U4 64kx16 SRAM
18.Intel FLASH F160B3TA, 1Mx16
19.Crystal, 32.768kHz
20.COBBA: Audio Codec (D/A and A/D
convertor , to PCM 8kHz) and I/Q
codec.
21.VCTXO 26MHz |
