Philips Semiconductors

Product specification

SA1630

IF quadrature transceiver

1998 Jul 21

9

AC ELECTRICAL CHARACTERISTICS IF RECEIVER DEMODULATOR

unless otherwise stated.

SYMBOL

PARAMETER

TEST CONDITION

LIMITS

UNITS

SYMBOL

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNITS

RInRx

Differential input impedance

6.6K||0.7

k

Ω||pF

VG

Voltage gain

AGC at maximum gain

81

88

dB

NF

VGA at maximum gain

7.5

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

0.25

dB

deg

Output DC offset between IRx Out and

QRx Out

Maximum Gain, Output at 1 MHz

6

mV

OVS

Output voltage swing

0.9

1.15

Vp–p

OVS

Output voltage swing

1.0

1.4

Output common mode voltage

1.9

V

Output impedance

7

Ω

Total Harmonic Distortion

Max. Gain, rated output at 1 MHz

3

%

Rx Bandwidth

7

8.5

10

MHz

Turn–on time

baseband signal out

2

µs

Turn–off time

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.