TRF1400

RF TELEMETRY RECEIVERS

VHF/UHF RZ ASK REMOTE CONTROL RECEIVER

SLWS014E – JUNE 1996 – REVISED APRIL 1998

6

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

TRF1400 electrical characteristics are measured with the device connected in the circuit shown in Figure 1.

As with any RF design, the successful integration of the device into a circuit board relies heavily on the layout

of the board and the quality of the external components. Figures 2 through 6 show the layout of the circuit board

used to obtain the TRF1400 electrical characteristics. Table 1 lists the parts required to complete the test circuit,

which demonstrates TRF1400 performance at 315 MHz. Specified component tolerances (and Q where

applicable) should be observed during the selection of parts. Tables 2 through 4 give S parameters for each of

the RF signal processing blocks.

A complete set of Gerber photoplotter files for the circuit board can be obtained from any TI Field Sales Office.

TRF1400 (U1)

1

234

56

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

SAW

Filter

RF Input

AVCC

C11

C12

C16

C14

C13

R3

R4

R5

C18

C19

C20

R6

R7

R8

DOUT

TRIG

BBOUT

C17

R1

R2

C3

C2

C8

L1

L4

C7

C4

C9

C5

L2

L3

C6

C10

C1

LED

R11

Buzzer

Optional

+

E1

E2

(Jumpers)

R10

R9

S1

Vcc1

B1X

Optional

C15

DVCC

(Short)

H1

H2

Figure 1. TRF1400 Test Circuit for 315-MHz Operation