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부품번호 | TDA7850A 기능 |
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기능 | 4 x 50 W MOSFET quad bridge power amplifier plus HSD | ||
제조업체 | STMicroelectronics | ||
로고 | |||
전체 16 페이지수
TDA7850A
4 x 50 W MOSFET quad bridge power amplifier plus HSD
Features
■ High output power capability:
– 4 x 50W/4Ω max.
– 4 x 30W/4Ω @ 14.4V, 1KHz, 10%
– 4 x 80W/2Ω max.
– 4 x 55W/2Ω @ 14.4V, 1KHz, 10%
www.DataShe■et4MUO.cSoFmET output power stage
■ Excellent 2Ω driving capability
■ Hi-fi class distortion
■ Low output noise
■ St-by function
■ Mute function
■ Automute at min. supply voltage detection
■ Low external component count:
– Internally fixed gain (26dB)
– No external compensation
– No bootstrap capacitors
■ On board 0.35A high side driver
Protections:
■ Output short circuit to GND, to Vs, across the
load
■ Very inductive loads
■ Overrating chip temperature with soft thermal
limiter
■ Output DC offset detection
■ Load dump voltage
■ Fortuitous open gnd
■ Reversed battery
Flexiwatt27
(vertical)
Flexiwatt27
(horizontal)
■ ESD
Description
The TDA7850A is a breakthrough MOSFET
technology class AB audio power amplifier in
Flexiwatt27 package designed for high power car
radio. The fully complementary P-Channel/N-
Channel output structure allows a rail to rail
output voltage swing which, combined with high
output current and minimized saturation losses
sets new power references in the car-radio field,
with unparalleled distortion performances.
The TDA7850A integrates a DC offset detector.
Table 1.
Device summary
Order code
TDA7850A
TDA7850AH
Package
Flexiwatt27 (vertical)
Flexiwatt27 (horizontal
Packing
Tube
Tube
October 2007
Rev 1
1/16
www.st.com
1
List of figures
List of figures
TDA7850A
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Standard test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Output power vs. supply voltage (RL = 4Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Output power vs. supply voltage (RL = 2Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Distortion vs. output power (RL = 4Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Distortion vs. output power (RL = 2Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Distortion vs. frequency (RL = 4Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Distortion vs. frequency (RL = 2Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 12. Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
www.DataSheFeigt4uUre.c1o3m. Output attenuation vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 14. Power dissipation & efficiency vs. output power (RL = 4Ω, SINE) . . . . . . . . . . . . . . . . . . . 11
Figure 15. Power dissipation & efficiency vs. output power (RL = 2Ω, SINE) . . . . . . . . . . . . . . . . . . . 11
Figure 16. Power dissipation vs. output power (RL = 4Ω, audio program simulation) . . . . . . . . . . . . . 11
Figure 17. Power dissipation vs. output power (RL = 2Ω, audio program simulation) . . . . . . . . . . . . . 11
Figure 18. ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . 11
Figure 19. Flexiwatt27 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 13
Figure 20. Flexiwatt27 (horizontal) mechanical data and package dimensions. . . . . . . . . . . . . . . . . . 14
4/16
4페이지 TDA7850A
3 Electrical specifications
Electrical specifications
3.1 Absolute maximum ratings
Table 2. Absolute maximum ratings
Symbol
Parameter
www.DataSheet4U.com
VS
VS (DC)
VS (pk)
IO
Operating supply voltage
DC supply voltage
Peak supply voltage (for t = 50ms)
Output peak current
repetitive (duty cycle 10% at f = 10Hz)
non repetitive (t = 100μs)
Ptot Power dissipation Tcase = 70°C
Tj Junction temperature
Tstg Storage temperature
Value
18
28
50
9
10
80
150
-55 to 150
Unit
V
V
V
A
A
W
°C
°C
3.2
Thermal data
Table 3. Thermal data
Symbol
Parameter
Rth j-case Thermal resistance junction to case
Value
Max. 1
Unit
°C/W
3.3 Electrical characteristics
Table 4.
Symbol
Electrical characteristics
(Refer to the test and application diagram, VS = 14.4V; RL = 4Ω; Rg = 600Ω; f = 1KHz;
Tamb = 25°C; unless otherwise specified).
Parameter
Test Condition
Min. Typ. Max. Unit
Iq1
VOS
dVOS
Quiescent current
Output offset voltage
During mute ON/OFF output
offset voltage
During St-By ON/OFF output
offset voltage
RL = ∞
Play mode - Mute mode
ITU R-ARM weighted
see Figure 18
100 180 280 mA
±60 mV
-10 +10 mV
-10 +10 mV
Gv Voltage gain
dGv Channel gain unbalance
25 26 27 dB
±1 dB
7/16
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부품번호 | 상세설명 및 기능 | 제조사 |
TDA7850 | 4 x 50W MOSFET Quad Bridge Power Amplifier Plus HSD | ST Microelectronics |
TDA7850A | 4 x 50 W MOSFET quad bridge power amplifier plus HSD | STMicroelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |