TDA8574 Datasheet, PDF (6/16 Pages) NXP Semiconductors – Class-H high-output voltage level line driver

Philips Semiconductors
Class-H high-output voltage level line
driver
Product specification
TDA8574
DC CHARACTERISTICS
V_CC = 9 V; T_amb = 25 °C; R_L = 10 kΩ; in accordance with application diagram (see Fig.3).
SYMBOL
V_CC
I_CC
V_O
PARAMETER
supply voltage
supply current
DC output voltage
CONDITIONS
V_in = 0 V
note 1
MIN.
6
−
−
TYP.
9
8
7.8
Note
1. The DC output voltage with respect to ground is ≈0.87 × V_CC.
MAX.
12
13
−
UNIT
V
mA
V
AC CHARACTERISTICS
V_CC = 9 V; f = 1 kHz; R_L = 10 kΩ; T_amb = 25 °C; in accordance with test circuit (see Fig.3); note 1.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
G_v
∆G_v
α_cs
f_lr
f_hr
Z_i
Z_o
voltage gain
channel unbalance
channel separation
low frequency roll-off
high frequency roll-off
input impedance
output impedance
7.5
−
R_s = 600 Ω; V_o(rms) = 1 V; note 1 80
−1 dB; note 2
−
−1 dB
20
22
−
V_o(max)(rms) maximum output voltage
THD + N = 0.1%
5.0
(RMS value)
V_no
noise output voltage
unweighted; note 3
−
A-weighted; note 4
−
THD + N
total harmonic distortion plus f = 1 kHz; V_o = 3 V (RMS); note 5 −
noise
f = 17 Hz to 20 kHz; note 6
−
SVRR
supply voltage ripple rejection note 7
50
f = 20 Hz to 20 kHz; note 8
−
8
8.5
dB
−
0.5
dB
90
−
dB
−
5
Hz
−
−
kHz
30
38
kΩ
−
10
Ω
5.2
−
V
7
9
µV
5
−
µV
0.003 0.01 %
0.01 −
%
65
−
dB
55
−
dB
Notes
1. The channel separation is determined by the parasitic capacitance between the inverting input left channel (pin 4)
and the inverting input right channel (pin 5). The PCB layout has a major contribution to the parasitic capacitance.
To obtain best results, the PCB tracks to pin 4 and pin 5 should be separated as much as possible.
2. The frequency response is externally fixed by the input coupling capacitors.
3. Noise output voltage is measured in a bandwidth of 20 Hz to 20 kHz with a source resistor R_s = 600 Ω.
4. Noise output voltage is measured in a bandwidth of 20 Hz to 20 kHz with an A-weighted filter with a source resistor
R_s = 600 Ω.
5. Distortion is measured at a frequency of 1 kHz using an A-weighted filter.
6. Distortion is measured at an output voltage of 3.0 V (RMS) at frequencies between 17 Hz and 20 kHz.
7. Ripple rejection is measured at the output, using a source resistor R_s = 600 Ω and a ripple amplitude of
100 mV (RMS) at a frequency of 1 kHz.
8. Ripple rejection is measured at the output, using a source resistor R_s = 600 Ω and a ripple amplitude of
100 mV (RMS) at frequencies between 20 Hz and 20 kHz.
1998 Oct 16
6