UNISONIC TECHNOLOGIES CO., LTD
ULA1145
Preliminary
FM TUNER IF SYSTEM
DESCRIPTION
The UTC ULA1145 is a high integr...
UNISONIC TECHNOLOGIES CO., LTD
ULA1145
Preliminary
FM TUNER IF SYSTEM
DESCRIPTION
The UTC ULA1145 is a high integrated IC for FM tuner IF stage, special in car radio.
FEATURES
* Built-in IF count buffer circuit and microprocessor-controlled switch circuit for ETR * High S/N * Wide range output * More simplifies design: - Built-in SD circuit—regulable sensitivity independently of soft mute characteristics - Variable S-meter gradient—output with three pins
ORDERING INFORMATION
Ordering Number ULA1145G-N20-R
Package HTSSOP-20
CMOS IC
Packing Tape Reel
MARKING
www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 10
QW-R106-006.a
ULA1145
PIN CONFIGURATION
Preliminary
NC 1 2 3 4 5 6 7 8 9 10
20 NC 19 18 17 16 15 14 13 12 11
PIN DESCRIPTION
PIN NO. 1, 20 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
PIN NAME NC IFIN IFBIAS IFGND Msc MGC MAC
AFOUT AFCOUT
IFOUT QIN VREG VCC IFCT GND MDRI SOUT SDCT SDOUT
IF input IF amp bias IF amp GND Mute start control Mute gradient control Mute attenuation control AF output AFC output IF output Quadrature detection input Voltage
regulator output VCC IF count output, control GND for detection circuit Mute driver S-meter output SD sensitivity control SD output
DESCRIPTION
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 10
QW-R106-006.a
ULA1145
PIN FUNCTIONS
PIN NO.
Function
2 IF input
Preliminary
Internal Equivalent Circuit 2
CMOS IC
Notes
3 Bias pin
4 GND
5
Soft mute ...