Texas Instruments TRF1500 manual Low-BandTransmit Mixer Test Guide

SWRA004A

Low-Band Transmit Mixer Test Guide

This section involves measuring the Transmit Mixer performance. All tests apply for an IF output terminated into a 1 kΩ differential load. To match the IF output to the 50 Ω test equipment a

transformer balun is used. All unused ports are terminated into 50 Ω.

Table 5. Low-Band Transmit Performance Parameters

PARAMETERS	Min	Typ	Max	UNIT
Tx Mixer Input Frequency Range	824	836.5	849	MHz
LO Input Frequency Range	941	953.5	966	MHz
Tx Mixer IF Frequency		117		MHz
RF Input Power		-30		dBm
LO Input Power		-5		dBm
Power Conversion Gain		19		dB
Noise Figure		7.8		dB
Input Return Loss		9.8		dB
Power Leakage LO In to Tx In		-49		dB
Power Leakage Tx In to LO In		-70.6		dB
1dB Input Compression Point		-20		dBm
Second Order Input intercept Point (IIP2)		29.5		dBm
Third Order Input Intercept Point(IIP3)		-11.5		dBm

Low-Band Transmit Mixer: Power Conversion Gain

Control state: 010100

SEE APPENDIX A: TEST BENCH SETUPS

Test setup Figure 20

The low band transmit mixer power conversion gain (dB) is the measured power (dBm) at the IF frequency minus the RF source power (dBm). It is measured using a RF source and a spectrum analyzer.

1)Set the RF source power (RF Pin) and the desired frequency (see Table 5). Connect the RF source to the EVM RF port, J30.

2)Set the LO source power (LO Pin) and the desired frequency (see Table 5). Connect the LO source to the EVM LO input port, J12.

52 TRF1500 Integrated Dual-Band RF Receiver User’s Guide