ICD-UX71/UX71F/UX81/UX81F/UX91F
ICD-UX71/UX71F/UX81/UX81F/UX91F
22
22
19
24
GND
LINE OUT L
20
21
22
23
PGND
PGND
PGND
PGND
12
9
PGND
FLL
TUNING
PGND
PGND
PGND
PGND
TO
EACH BLOCK
TO
EACH BLOCK
TO
EACH BLOCK
11
10
7
8
SCL
BUFFER
AMP
FM
DEMODULATOR
STEREO
DECORDER
QUADRATURE
OSCILLATOR
POWER
MANAGEMENT
DE-
EMPHASIS
FM SELECTIVITY
FILTER
TUNING
SYSTEM
RF AND FM
QUADRATURE
MIXER
LINE SW
AND
MUTE
VOLTAGE
STABILIZER
1
FM ANT1
2
AM ANT2
3
VIO
4
VDD
5
INT
6
SDA
18
LINE OUT R
17
MPX
16
NC
15
VSTABI
14
NC
13
VCC
DIGITAL INTERFACE
I2C CONVERSION
• IC Block Diagrams
IC1002 LV24230LS-TLM-E (AUDIO Board (1/3))
IC1003 LM4916LDX/NOPB (AUDIO Board (1/3))
IC1004 SN74LVC2G66YZPR (AUDIO Board (1/3))
IC2002 TK77335AM4 (AUDIO Board (2/3))
IC2004 LTC3526LEDC (AUDIO Board (2/3))
3
1
1A
1B
2C
GND
VCC
1C
2B
2A
4
2
5
7
6
8
1
2
3
4
5
10
9
8
7
6
BIAS
GENERATOR
CLICK-POP
AND
MODE CONTROL
LOGIC
IN A
SD
MUTE
BYPASS
IN B
VDD
VOA
SE/BTL
VOB
GND
VIN
VREF
500k
Ω
7
8 NC
VOUT
6 NC
5 NP
2
NC 1
VDD 3
VCONT 4
ON/OFF
CONTROL
THERMAL
&
OVER CURRENT
PROTECTION
1
SW
2
GND
3
VIN
5 FB
6 VOUT
GATE DRIVERS
AND
ANTI-CROSS
CONDUCTION
VBEST
MODE
CONTROL
PK
COMP
LOGIC
CSS
VREF
ZERO COMP
VOUT
VB
VREF
WELL
SWITCH
VRER
UVLO
1MHz
OSC
THERMAL
SHUTDOWN
START-UP
CLAMP
SLOPE COMP
ERROR AMP
SLEEP COMP
4M
TSD
CLK
WAKE
ZERO
PK
ANTI-RING
VSEL
4 SHDN
SHUTDOWN
SHUTDOWN
