U2309B-FLG3
| Model | U2309B-FLG3 |
| Description | Video Tuner, 3-Band, PDSO28, SO-28 |
| PDF file | Total 8 pages (File size: 190K) |
| Chip Manufacturer | TEMIC |
U2309B
VHF/ UHF-Tuner-IC
Description
This tuner IC requires a power supply of 9 V and performs
the function of three separate oscillators an mixers,
SAWF-driver, L.O.-output and tri-state band switch.
Additional to TV-tuner application this IC is usable for
DAB (Digital Audio Broadcast) tuners.
Features
D
9 V supply voltage
D
Frequency range from 48 to 860 MHz
D
Band A: balanced high impedance mixer input and
amplitude controlled oscillator
D
Balanced L. O.-outputs for prescalers or PLL
D
SAW filter driver with low impedance output
D
Voltage regulator for stable operating characteristics
D
ESD protection on all pins except oscillator pins and
RF-inputs
D
Band B + C: balanced low impedance mixer input and
symmetrical oscillator
Benefits
D
The integration of 3 bands and the small SSO28
package allows to design very small and economical
3-band tuners with high performance.
Block Diagram
1
Osc. A
3
4
6 5 7
8 10 9 11
19
2
Osc. B
Osc. C
Voltage stabiliser
Band switch
L.O.
12
27
28
Mixer output
SAW–filter driver
17
18
14
RF
Band A
25
24
23
Band B
22
26
21
Band C
95 10717
13
20
16 15
Figure 1. Block diagram
TELEFUNKEN Semiconductors
Rev. A2, 29-May-96
1 (8)
