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參數資料
| 型號： | U2894B-AFSG3 |
| 英文描述： | Modulation PLL for GSM, DCS and PCS Systems |
| 中文描述： | 調制鎖相環(huán)用于GSM，DCS和PCS系統(tǒng) |
| 文件頁數： | 12/16頁 |
| 文件大?。?/td> | 802K |
| 代理商： | U2894B-AFSG3 |
U2894B
Rev. A4, 30-Sep-98
5 (16)
Electrical Characteristics (continued)
Tamb = 25°C, VS = 2.7 to 5.5 V
Parameters
Test Conditions / Pin
Symbol
Min.
Typ.
Max.
Unit
Mixer (1900 MHz)
RF input level
0.5 to 2 GHz
P19RF
–23
–17
dBm
LO-spurious at
RF/NRF ports
@ P19MIXLO = –10 dBm
@ P19RF = –15 dBm
SP19RF
–40
dBm
MIXLO input level
0.05 to 2 GHz
P19MIXLO
–22
–12
dBm
MIXO (100
W load)
Output level 6)
@ P19MIXLO = –17 dBm
P19MIXO
55
mVrms
Carrier suppression
@ P19MIXLO = –17 dBm
CS19MIXO
–20
dBc
Charge-pump output CPO (VVSP = 5 V; VCPO = 2.5 V)
Pump-current pulse
CPC open for DC
| ICPO |
0.7
1
1.3
mA
pp
RCPC = 2.2 k 7)
| ICPO 2 |
1.4
2
2.6
mA
PCPC = 680 7)
| ICPO_4 |
3
4
5
mA
TK pump current
Tk_| ICPC |
15
%/100
°K
Mismatch source / sink
current
(ICPOSI – ICPOSO)/ICPOSI
ICPOSO = Isourc
ICPOSI = Isink
MICPO
0.1
–
Sensivity to VSP
|
DI
CPO
I
CPO
|| D
VSP
|
SICPO
0.1
–
VCPO voltage range
VCPO
0.5
VVSP–0.6
V
Charge-pump control input CPC
Compensation capacitor
CCPC
500
pF
Short circuit current 8)
CPC grounded
| ICPCK |
1.6
mA
Mode control
Sink current
VMC = VS
IMC
60
mA
Power-up input PU (power-up for all functions, except mixer)
Settling time
Output power within 10%
of steady state values
SPU
5
10
ms
High level
Active
VPUH
2.4
V
Low level
Standby
VPUL
0
0.4
V
High-level current
Active, VPUH = 2.7 V
IPUH
0.26
mA
Low-level current
Standby, VPUL = 0.4 V
IPUL
–1
20
mA
Power-up input PUMIX (power-up for mixer only)
Settling time
Output power within 10%
of steady state values
tsetl
5
10
ms
High level
Active
VPUMIXH
2.4
VS2
V
Low level
Standby
VPUMIXL
0
0.4
V
High-level current
Active, VPUMIXH = 2.7 V
IPUMIXH
0.26
mA
Low-level current
Standby,
VPUMIXL = 0.4 V
IPUMIXL
–1
20
mA
6)
– 1 dB compression point (CP – 1)
7)
RCPC: external resistor to GND for charge–pump current control
8)
See figure 7.
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