器件名称: U2320B
功能描述: VHF/UHF Tuner-IC
文件大小: 159.87KB 共7页
简 介:U2320B
VHF/UHF Tuner-IC
Description
This tuner IC requires a power supply of 12 V and performs the function of two separate oscillators and mixers, SAW-filter driver and dual state band switch.
Features
D Frequency range from 48 to 860 MHz D Band A: balanced high impedance mixer input and
amplitude controlled oscillator
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: balanced low impedance mixer input and
symmetrical oscillator
Block Diagram
1 3 4 6 5 7 15 2
Osc. A
Osc. B Voltage stabiliser Band switch 8
Mixer output SAW–filter driver
13 14
10
RF Band A 19 18 20 17 Figure 1. Band B
95 10713
9
16
12 11
Ordering Information
Extended Type Number U2320B-FLG3 Package SO20 plastic package Remarks Taped and reeled
TELEFUNKEN Semiconductors Rev. A1, 29-May-96
1 (7)
U2320B
Pin Description
GND (RF) 1 RF in, A RF in, A 2 3 20 Osc A, base Pin 1 2 3 4, 7 5, 6 8 9, 10 11, 12 13, 14 15 16, 17 18, 19 20 Symbol Osc A, base GND (common) Osc A, coll. Osc B, base Osc B, coll. Band sw. SAWF, out SAWF, inp. Mix, out VS RF in, B RF in, A GND (RF) Function Oscillator band A, base Ground, common Oscillator band A, collector Oscillator band B, bases Oscillator band B, collectors Dual-state band switch SAW filter driver outputs SAW filter driver input Mixer outputs, open collector Supply voltage Vs RF inputs, band B RF inputs, band A Ground, RF part
19 GN……