TDA8944AJ Datasheet, PDF (8/20 Pages) NXP Semiconductors – 2 x 7 W BTL audio amplifier with DC gain control

Philips Semiconductors
TDA8944AJ
2 x 7 W BTL audio amplifier with DC gain control
11. Static characteristics
Table 7: Static characteristics
V_CC = 12 V; T_amb = 25 °C; R_L = 8 Ω; V_MODE = 0 V; V_i = 0 V; measured in test circuit Figure 15; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V_CC
I_q
I_stb
V_O
∆V_OUT[3]
supply voltage
quiescent supply current
standby supply current
DC output voltage
differential output voltage
offset
operating
R_L = ∞
V_MODE = V_CC
4.5
12
[1] _-
40
-
-
[2] _-
6
-
-
18
V
50
mA
10
µA
-
V
170
mV
V_MODE
I_MODE
mode selection input voltage operating mode
mute mode
standby mode
mode selection input current 0 < V_MODE < V_CC
0
-
3.5
-
V_CC − 0.5 -
-
-
1.0
V
V_CC − 1.5 V
V_CC
V
20
µA
V_GC
gain control voltage (pin GC) pin GC not connected
-
2.75
-
V
I_GC
current into pin GC
V_GC = 0 V
-
600
-
µA
[1] With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal to the differential
output voltage offset (∆V_OUT) divided by the load resistance (R_L).
[2] The DC output voltage with respect to ground is approximately 0.5V_CC.
[3] ∆V_OUT = V_OUT+ − V_OUT− .
handbook,⁵h⁰alfpage
Iq
(mA)
40
30
20
10
0
0
4
MGW590
8
12
16
20
VCC (V)
Fig 4. Quiescent current as function of supply
voltage.
handbook,⁵h⁰alfpage
Iq
(mA)
40
MGW591
30
20
10
0
0
4
8
12
16
20
VMODE (V)
V_CC = 12 V
Fig 5. Quiescent current as function of mode voltage.
9397 750 09433
Product data
Rev. 01 — 01 March 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
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