U3600BM_05 Datasheet, PDF (16/44 Pages) ATMEL Corporation – Single-chip Cordless Telephone IC

7. Electrical Characteristics (Continued)
T_amb = +25°C, VRF = VAF = RFOVB = 3.6V, all bits set to “0”, unless otherwise specified. Test circuit, see Figure 8-1 on page 18.
Parameters
Test Conditions
Symbol Min.
Typ.
Max.
Unit
Release time
VCOIN = step 126 mV –> 31.6 mV
(–18 dBV –> –30 dBV)
measure time after step, when output
voltage has 0.75 times of final value
14.4
ms
Input resistance
14
19.5
26
kΩ
Splatter Amplifier, ETX = 1
Open loop gain
90
dB
Gain bandwidth product
150
kHz
Maximum output voltage
swing
2.4
Vpp
Limiter Amplifier, ETX = 1, T_j = 25°C
Gain for signals below
LIMIN –> TXO,
limitation
20 mV_RMS applied to LIMIN (AC coupled)
Distortion for signals below
LIMIN –> TXO,
limitation
20 mV_RMS applied to LIMIN (AC coupled)
Maximum output voltage
swing (above limitation,
clipping)
26
dB
2
%
1.8
2.1
2.35
V_pp
Input resistance at LIMIN
15
20
25
kΩ
Note:
The gain and maximum output voltage swing of the limiter amplifier changes with temperature to compensate the tempera-
ture dependancy of MODIN (“tx conversion gain” of RF transmit part), fundamentally determined by the structure of the
circuitry.
RF Transmitter, ETXO = EVCO1 = EVCO2 = EVCO3 = EOSC = 1; T_j = 25°C
MODIN input impedance
70
100
130
kΩ
RFO output impedance
Load = 200 ø
230
300
390
Ω
RFO output voltage level
ETXO = 0; no load
0.3
V
Highest operating frequency USA Base Channel 9 (US1b9)
49.99
00
MHz
For the complete programming see
“Channel Frequencies, Dividers and
Country Settings” on page 20“
USA1:
GMOD[1:0] = 00; fMod = ~7.6 MHz
5.2
kHz/V
TX conversion gain
MODIN - RFO
USA2:
GMOD[1:0] = 01; fMod = ~5.7 MHz
5.2
kHz/V
France:
GMOD[1:0] = 01; fMod = 4.3 MHz
GMOD[1:0] = 00; fMod = 4.3 MHz
3.8
kHz/V
2.7
kHz/V
Demodulated distortion THD
MODIN - RFO
Spain/Netherlands:
GMOD[1:0] = 10; fMod = 1.8 MHz
Modulation frequency: 1 kHz
US: ∆F = 4.0 kHz
France: ∆F = 2.5 kHz
7.9
kHz/V
1.5
5
%
16 U3600BM
4516D–CT0–10/05