SA1638 Datasheet, PDF (7/26 Pages) NXP Semiconductors – Low voltage IF I/Q transceiver

Philips Semiconductors
Low voltage IF I/Q transceiver
Product specification
SA1638
AC ELECTRICAL CHARACTERISTICS (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
IF Transmit Modulator (continued)
Noise density at 600kHz
Noise density at 10MHz
|ITxIn| = |ITxInX| = |QTxIn| =
|QTxInX| = 0.75V_PEAK
t_ON
Turn ON time
PdTx = LO, transmit signal to 90%
t_OFF Turn OFF time
PdTx = HI, transmit signal to 10%
IF Receiver (R = 36kΩ between pins RESA and RESB)
RInRx Differential input impedance
ROutRx Output impedance
f_IN = 400MHz
Output common mode voltage
f3dB Low pass filter -3dB bandwidth
Low pass filter attenuation:
200kHz
400kHz
600kHz
6.5MHz
13.0MHz
VG Voltage gain
Differential output PD into GSM
baseband relative to 1200Ω
source EMF
NF
Noise figure⁸
1200Ω source and external
matching resistor and inductor
Channel matching:
Gain
Phase
f_IN = 400.005MHz
Output DC offset²
Differential, DCRES=562kΩ
I_OUT
V_OUT
P_-1dB
Output drive current at each pin
Minimum differential output swing
Input 1dB compression point:
In band
200kHz
400kHz
600kHz
Source (Sink)
1200Ω source EMF
t_ON
Turn ON time³
POnRx = HI, to baseband signal
out
t_OFF Turn OFF time
POnRx = LO, to no baseband
signal out
IF Synthesizer
f_LO
Local oscillator input frequency
range⁹
Z_LOIN Differential input impedance
Between pins LO_IN and LO_INX, f_IN
= 800MHz
V_LOIN LO peak input voltage range
Single-ended
Referred to 50Ω
Programmable divider:
Division range
Step size
f_CLKIN
Z_CLKIN
V_CLKIN
I_REF
Reference clock input frequency
Differential input impedance
CLK_IN peak input voltage range
Charge pump input reference
current
V_CLKIN = 100mV_PEAK
Between pins ClkIn and ClkInX
Single-ended, referred to 50Ω
| I_CP |
Charge pump output current:
c0...c2 = 000
c0...c2 = 111
Step size
I_REF =31.2µA,
V_CP = V_CCCP/2
MIN
70
6.5
30
43
-1.5
-60
-59
-54
140
50
64
50
0.425
0.85
0.045
–3σ
-130
-133
8.9
38.1
49.4
5.7
-55.3
-49.3
0.487
0.979
0.062
LIMITS
TYP
-129
-131
5
5
5 || 0.6
1
V_REF
83
10.7
45
70
>80
>80
51
7.0
-0.26
0.0
-25
10 (700)
2.0
-53
-47
-47
-47
2
2
276 || 0.6
1
10 || 1.0
31.2
0.5
1.0
0.071
+3σ
-128
-129
12.5
51.9
52.7
8.3
-50.7
-44.8
0.513
1.021
0.08
UNITS
MAX
dBc/Hz
µs
µs
kΩ || pF
kΩ
V
90
kHz
dB
58
dB
dB
1.5
dB
degrees
60
mV
µA
V
-47
-40
dBV
µs
µs
800 MHz
Ω || pF
100
mV
511
52
MHz
kΩ || pF
400
mV
µA
0.575
1.15
mA
0.105
1997 Sept 03
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