HD155121F Datasheet, PDF (23/57 Pages) Hitachi Semiconductor – RF Transceiver IC for GSM and PCN Dual band cellular systems

Typical Performance
Power Supply Current Typical Performance
HD155121F
ICC [mA]
A V_CC = 3.0V
6 10 17 18 32 38 41 42 43
LNA bias current [mA]
= (Vb − Va) / 10Ω
b
a
for GSM
b
a
for PCN
no fit 10p
3
10
POONRX1 44
+−
POONRX2 45
4
4.7k
10p
no fit
Active bias
circuit
10
POONTX 46
+−
BAND 35
LE 28
SDATA 27
5
CLK 26
4.7k
7 19 31 37 40
Rx
High
High
Low
Tx
Low
Low
High
High for PCN
Low for GSM
Bit number 26
TRS: Siemens ^10p
BFP420
Unit: R : Ω
C:F
Figure 3
Power supply current does not include the LNA bias current calculated by below formula.
Power supply current [mA] = ICC [mA] – LNA Bias current [mA]
23