10

ATA5756/ATA5757

4702H–RKE–09/04

Output power measurement can be done with the circuit as shown in Figure 9. Please

note that the component values must be changed to compensate the individual board

parasitics until the ATA5756/ATA5757 has the right load impedance. Also, the damping

of the cable used to measure the output power must be calibrated.

Figure 9. Output Power Measurement ATA5756/ATA5757

Table 2 and Table 3 show the output power and the supply current versus temperature

and supply voltage.

Table 2. Output Power and Supply Current versus Temperature and Supply

Voltage for the ATA5756 with Z

Ambient

Temperature

V

(dBm/mA)

V

(dBm/mA)

V

(dBm/mA)

3.1 ±1.5 / 7.2

6.1 +2/-3 / 7.7

7.1 +2/-3 / 7.9

T

3.0 ±1.5 / 7.5

6.0 ±2 / 8.1

7.4 ±2 / 8.3

T

3.0 ±1.5 / 7.5

5.8 +2/-3 / 8.2

7.2 +2/-3 / 8.5

2.5 ±1.5 / 7.6

5.5 +2/-3 / 8.2

6.5 +2/-3 / 8.5

Table 3. Output Power and Supply Current versus Temperature and Supply

Voltage for the ATA5757 with Z

Ambient

Temperature

V

(dBm/mA)

V

(dBm/mA)

V

(dBm/mA)

3.3 ±1.5 / 7.6

6.2 +2/-3 / 8.1

7.1 +2/-3 / 8.4

T

3.0 ±1.5 / 8.0

6.0 ±2 / 8.5

7.5 ±2 / 8.8

T

2.8 ±1.5 / 8.0

5.7 +2/-3 / 8.6

6.8 +2/-3 / 8.8

2.7 ±1.5 / 8.1

5.5 +2/-3 / 8.7

6.6 +2/-3 / 8.9

~

ANT2

ANT1

Power

meter

Z

Lopt

Z = 50

Ω

50

Ω