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PDF U2893B Data sheet ( Hoja de datos )
| Número de pieza | U2893B | |
| Descripción | Modulation PLL for GSM/ DCS and PCS Systems | |
| Fabricantes | TEMIC Semiconductors | |
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U2893B
Modulation PLL for GSM, DCS and PCS Systems
Description
The U2893B is a monolithic integrated circuit. It is
realized using TEMIC’s advanced silicon bipolar UHF5S
technology. The device integrates a mixer, an I/Q modu-
lator, a phase-frequency detector (PFD) with two
synchronous-programmable dividers, and a charge pump.
The U2893B is designed for cellular phones such as GSM,
DCS1800, and PCS1900, applying a transmitter-archi-
tecture where the VCO is operated at the TX output
frequency.
U2893B exhibits low power consumption, and the power-
down function extends battery life.
The IC is available in a shrinked small-outline 28–pin
package (SSO28).
Features
D Supply voltage down to 2.7 V
D Current consumption 40 mA
D Power-down function
D Low-current standby mode
D High-speed PFD and charge pump
D Integrated dividers
Benefits
D High-level RF integration
D TX architecture saves filter costs
D Low external part count
D Small SSO28 package
D One device for various applications
Block Diagram
MDLO
I NI
Q NQ
PUMIX
PU MIXO MIXLO
MDO
NMDO
ND
NND
RD
NRD
MC
90
grd
+
I/Q modulator
Voltage
reference
Mixer
N:1
divider
R:1
divider
Mode
control
MUX
PFD
GND
CPC GNDP
Figure 1. Block diagram
RF
NRF
VSP
CPO
VS1
VS2
VS3
12494
TELEFUNKEN Semiconductors
Rev. A1, 29-Jan-97
Preliminary Information
1 (14)
1 page  
U2893B
Electrical Characteristics: General Data (continued)
Tamb = 25°C, VS = 2.7 to 5.5 V
Parameters
Test Conditions / Pin
Symbol
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁMixer (1900 MHz)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁRF input level
0.5 to 2 GHz
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁLO-spurious at
RF/NRF ports
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁMIXLO input level
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁWMIXO (100 load)
@ P19MIXLO = –10 dBm
@ P19RF = –15 dBm
0.05 to 2 GHz
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ... Output level 5)
@ P19MIXLO = –17 dBm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ... Carrier suppression @ P19MIXLO = –17 dBm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCharge pump output CPO
P19RF
SP19RF
P19MIXLO
P19MIXO
CS19MIXO
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPump current pulse
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁTK pump current
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁMismatch source / sink
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁcurrent
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSensivity to VSP
CPC open
2.23 kΩ CPC to GND
760 Ω CPC to GND
(ICPOSI – ICPOSO)/ICPOSI
ICPOSO = Isourc
ICPOSI = Isink
D|
ICPO
ICPO
|
|
DVSP
VSP
|
| ICPO |
| ICPO 2 |
| ICPO_4 |
Tk_| ICPC |
MICPO
SICPO
ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCharge pump control input CPC
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCompensation capacitor
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁShort circuit current 6)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁMode control
CPC grounded
CCPC
| ICPCK |
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSink current
VMC = VS
IMC
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPower-up input PU (power-up for all functions, except mixer)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSettling time
Output power within
10% of steady state
values
SPU
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁHigh level
Active
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁLow level
Standby
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁHigh-level current
Active, VPUH = 2.7 V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁLow-level current
Standby, VPUL = 0.4 V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPower-up input PUMIX (power-up for mixer only)
VPUH
VPUL
IPUH
IPUL
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSettling time
Output power within
10% of steady state
values
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁHigh level
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁLow level
High-level current
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁLow-level current
Active
Standby
Active, VPUMIXH = 2.7 V
Standby,
VPUMIXL = 0.4 V
VPUMIXH
VPUMIXL
IPUMIXH
IPUMIXL
Min. Typ. Max. Unit
–17 dBm
–40 dBm
–8 dBm
55
–20
mVeff
dBc
0.8 1 1.2 mA
1.6 2 2.4 mA
3.6 4 4.4 mA
15 %/100 k
10 %
0.1 –
500 pF
2
2.7 3.7
mA
20 mA
5 10 ms
2.5 V
0 0.4 V
0.1 0.6 mA
–10 0 mA
5 10 ms
2.5 V
0 0.4 V
0.1 0.6 mA
–10 0 mA
6) See figures 6 and 14.
TELEFUNKEN Semiconductors
Rev. A1, 29-Jan-97
Preliminary Information
5 (14)
5 Page 
Application Circuit (900 MHz)
Baseband processor
U2893B
2.7 to 3.5 V
27n
12p 12p
I NI MDLO Q NQ PUMIX PU MIXO
LO (–10 dBm)
1192 MHz
MIXLO
Dr Dr
4.7p MDO
NMDO
47nH
ND
1k NND
RD
f_Ref
vrms = 55 mV 50
NRD
MC
90
grd
+
I/Q modulator
N:1
divider
MUX
R:1
divider
Mode
control
GND
Voltage
reference
Mixer
PFD
U2893B
RF
NRF
VSP
50 390
6 dB To PA
attn.
VCO MQE 550
2.7
to 3.5 V 10
CPO
68p
VS1
VS2
VS3
3.3n
390
2.7 to 3.5 V
CPC GNDP
13316
Figure 16. Power-up, charge pump control, and mode control must be connected according to the application used
TELEFUNKEN Semiconductors
Rev. A1, 29-Jan-97
Preliminary Information
11 (14)
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet U2893B.PDF ] | |
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