SA1630 Datasheet, PDF (9/22 Pages) NXP Semiconductors – IF quadrature transceiver

Philips Semiconductors
IF quadrature transceiver
Product specification
SA1630
AC ELECTRICAL CHARACTERISTICS IF RECEIVER DEMODULATOR
(Mode #4, Rx_ON, Tx_OFF) V_CCXXX = +3V = GNDXXX = 0V; LO IN = 100 mV_peak at 704 MHz, CLKIN = 100mV_peak, at 22 MHz, Ta = 25°C,
unless otherwise stated.
SYMBOL
PARAMETER
TEST CONDITION
LIMITS
UNITS
MIN
TYP
MAX
RInRx
VG
NF
Differential input impedance
Voltage gain
Input noise figure¹
f_IN = 352 MHz
AGC at maximum gain
VGA at maximum gain
6.6K||0.7
81
88
7.5
kΩ||pF
dB
dB
AGC range
67
70
dB
AGC step size
2
dB
AGC differential error
2
dB
AGC settling time
any AGC step
200
nS
Channel matching
gain
phase
0.1
dB
0.25
deg
Output DC offset between IRx Out and
QRx Out
Maximum Gain, Output at 1 MHz
6
OVS
Output voltage swing
AGC G_MIN, into load²
AGC Gain, except G_MIN
0.9
1.15
1.0
1.4
Output common mode voltage
1.9
mV
Vp–p
V
THD³
BW⁵
Output impedance
Total Harmonic Distortion
Rx Bandwidth
Max. Gain, rated output at 1 MHz
7
7
Ω
3
%
8.5
10
MHz
t_ON4
Turn–on time
R_X_ON, T_X_ON transition to
baseband signal out
2
µs
t_OFF4
Turn–off time
R_X_ON, T_X_ON transition to no
baseband signal out
2
µs
NOTES:
1. The Receive input is to be differential (using a balun or a differential source such as a differential SAW filter) and matched to external
generator’s impedance (ex: 50 ohms). The balun may or may not provide any impedance transformation depending on availability. An
external L–C matching circuit can provide the rest of the impedance transformation and absorb the input capacitance of the receiver input.
Such a differential input scheme is mandatory to avoid pickup, and keep the noise figure low. A shunt resistor across the input (value TBD)
will be used to set the input impedance as a compromise between the matching ease in production versus the noise figure of the receiver.
The system board layout has to keep the isolation between the receive inputs and the LO signal as high as possible. Otherwise the LO
leakage will overload the receiver.
2. The load is 1000 ohms in parallel with 15pF of capacitor.
3. THD is total harmonic distortion. We measure harmonics 2, 3, 4.
4. Guaranteed by design.
5. 3dB bandwidth relative to a passband measurement taken at 1MHz.
1998 Jul 21
9