U2730B-B Datasheet, PDF (10/12 Pages) TEMIC Semiconductors – L-Band Down-Converter for DAB Receivers

U2730B-B
Typical Gain Control Charateristics
Operating conditions: V_CC = 8.5 V, T_amb = 25C, F_RF = 1490 MHz, F_LO = 1261.568 MHz
–20
–25
W R_th=6.8k
–30
W R_th=12k
–35
W R_th=18.8k
–40
–70 –60 –50 –40 –30 –20 –10 0
14851
pRF ( dBm )
4.2
4.1
4.0
3.9
3.8
W R_th=18.8k
3.7
3.6
3.5
W R_th=6.8k
3.4
3.3
3.2
3.1
3.0
–70 –60 –50 –40 –30 –20 –10 0
14852
pRF ( dBm )
Figure 8. IF output power (Pin 19)
Figure 9. Gain control voltage (Pin 11)
Third Order 2-Tone Intermodulation
Ratio (dim3)
Operating conditions: f_RF1 = 1490 MHz,
f_RF2 = 1491 MHz, p_RF1 = p_RF2 = p_RF
50
45
40
35
W R_th=18.8k
W R_th=12k
W R_th=6.8k
30
25
20
–70 –60 –50 –40 –30 –20 –10 0
14853
pRF ( dBm )
Figure 10.
Total Supply Current
W Operating conditions: R_TH = 12 k , PLL locked,
m Icp = 200 A
65.0
62.5
V_S=9.35V
60.0
57.5
V_S=8.5V
55.0
52.5
50
–70 –60 –50 –40 –30 –20 –10 0
14854
pRF ( dBm )
Figure 11.
10 (12)
Preliminary Information
Rev. A1, 22-Jul-98