ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C, V
S
= 9V, R
L
= 10k
Ω
, R
g
= 50
Ω
,
all variable gains = 0dB, f = 1kHz, unless otherwise specified.)
Symbol Parameter Test Condition Min. Typ. Max. Unit
INPUT SELECTOR
R
IN
Input Resistance 70 100 130 kΩ
V
CL
Clipping Level d ≤ 0.3% 1.3 1.6 Vrms
S
IN
Input Separation 70 100 dB
A
MUTE
Input Mute Attenuation 70 95 dB
V
DC
Mute DC Step 0.2 10 mV
MUTE AT AM INPUT (*)
V
IL
Input Low Voltage AM not selected 0.4 V
VOLUME CONTROL
G
MAX
Max. Gain Note 2 30.5 32 33.5 dB
A
MAX
Max Attenuation 75 79 83 dB
A
step
Step Resolution 0.5 1 1.5 dB
E
A
Attenuation Set Error G = +20 to -20dB -1 0 +1 dB
G = -20 to -60dB -2 2 dB
E
T
Tracking Error G = -20 to -60dB 2 dB
V
DC
DC Steps Adjacent Attenuation Steps,
Range from 0 to -79dB
0.1 4 mV
From 0dB to -79dB 0.5 10 mV
LOUDNESS CONTROL
A
MAX
Control Range 14 15 16 dB
A
step
Step Resolution 0.5 1 1.5 dB
R
LOUD
Internal Resistor 37 50 63 kΩ
BASS CONTROL
B
RANGE
Max. Bass boost 15.5 18 20 dB
B
CUT
Max. Bass cut -20 -18 -15.5 dB
A
Step
Step Resolution 1 2 3 dB
R
B
Internal Feedback Resistance 48 65 82 kΩ
TREBLE CONTROL
C
RANGE
Control Range ±13 ±14 ±15 dB
A
step
Step Resolution 1 2 3 dB
SPEAKER ATTENUATORS
C
RANGE
Control Range 36 37.5 39 dB
A
step
Step Resolution From 0 to -24dB 0.5 1 1.5 dB
A
MUTE
Output Mute Attenuation 70 90 dB
E
A
Attenuation Set Error From 0 to -24dB 1 dB
V
DC
DC Steps Adjacent Attenuation Steps 0.1 4 mV
AUDIO OUTPUTS
V
CLIP
Clipping Level d = 0.3% 2 2.5 Vrms
G
OUT
Output Gain (fixed) 4 dB
R
L
Output Load Resistance AC - connected 3 kΩ
DC connected to GND 5
C
L
Output Load Capacitance 10 nF
R
OUT
Output Impedance 30 100 Ω
V
DC
DC Voltage Level 3.7 4 4.3 V
(*) The mute function can be activated without using the I2C bus by grounding the AM input when AM is not selected. This causes the input
multiplexer to select the reference voltage instead of an input signal.
TDA7432
4/10
Obsolete Product(s) - Obsolete Product(s)
