Order this document by MC34119/D
The MC34119 is a low power audio amplifier intergrated circuit intended
(primarily) for telephone applications, such as in speakerphones. It provides
differential speaker outputs to maximize output swing at low supply voltages
(2.0 V minimum). Coupling capacitors to the speaker are not required. Open
loop gain is 80 dB, and the closed loop gain is set with two external resistors.
A Chip Disable pin permits powering down and/or muting the input signal.
The MC34119 is available in standard 8–pin DIP, SOIC package, and
TSSOP package.
• Wide Operating Supply Voltage Range (2.0 V to 16 V), Allows
Telephone
Line Powered Applications
• Low Quiescent Supply Current (2.7 mA Typ) for Battery
Powered Applications
• Chip Disable Input to Power Down the IC
•
•
•
•
•
•
LOW POWER
AUDIO AMPLIFIER
SEMICONDUCTOR
TECHNICAL DATA
8
Low Power–Down Quiescent Current (65 µA Typ)
1
Drives a Wide Range of Speaker Loads (8.0 Ω and Up)
P SUFFIX
PLASTIC PACKAGE
CASE 626
Output Power Exceeds 250 mW with 32 Ω Speaker
Low Total Harmonic Distortion (0.5% Typ)
Gain Adjustable from 46 dB for Voice Band
8
Requires Few External Components
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
MAXIMUM RATINGS
Rating
Value
Unit
–1.0 to +18
Vdc
±250
mA
–1.0, VCC + 1.0
–1.0, VCC + 1.0
Vdc
–55, +140
°C
Supply Voltage
Maximum Output Current at VO1, VO2
Maximum Voltage @ Vin, FC1, FC2, CD
Applied Output Voltage to VO1, VO2 when disabled
Junction Temperature
NOTE:
8
1
DTB SUFFIX
PLASTIC PACKAGE
CASE 948J
(TSSOP)
ESD data available upon request.
PIN CONNECTIONS
Block Diagram and Simplified Application
Rf
75 k
6
Audio
Input
Ci
0.1
C1
1.0 µF
Ri
3.0 k
Vin
4
FC1
3
–
+
VCC
5
#1
50 k
125 k
2
8 VO2
FC2 2
7 Gnd
FC1 3
6 VCC
Vin 4
5 VO1
VO1
Speaker
4.0 k
C2*
5.0 µF
CD 1
4.0 k
–
+
(Top View)
8
#2
ORDERING INFORMATION
FC2
Bias
Circuit
50 k
VO2
1
CD
Chip
Disable
Device
Operating
Temperature Range
Package
MC34119
7
* = Optional
Differential Gian = 2 x
Rf
Ri
Plastic DIP
MC34119P
Gnd
This device contains 45 active transistors.
MC34119D
TA = –20° to +70°C
MC34119DTB
Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
SO–8
TSSOP
Rev 1
1
MC34119
RECOMMENDED OPERATING CONDITIONS
Characteristics
Symbol
Min
Max
Unit
VCC
VCD
+2.0
0
+16
VCC
Vdc
Vdc
Load Impedance
RL
8.0
–
Ω
Peak Load Current
IL
–
±200
mA
AVD
0
46
dB
TA
–20
+70
°C
Supply Voltage
Voltage @ CD (Pin 1)
Differential Gain (5.0 kHz Bandwidth)
Ambient Temperature
ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.)
Symbol
Min
Typ
Max
Unit
ri
–
>30
–
MΩ
AVOL1
80
–
–
dB
Closed Loop Gain (Amplifier #2, VCC = 6.0 V, f = 1.0 kHz, RL = 32 Ω)
AV2
–0.35
0
+0.35
dB
Gain Bandwidth Product
GBW
–
1.5
–
MHz
POut3
POut6
POut12
55
250
400
–
–
–
–
–
–
–
–
–
0.5
0.5
0.6
1.0
–
–
50
–
–
–
12
52
–
–
–
Characteristics
AMPLIFIERS (AC CHARACTERISTICS)
AC Input Resistance (@ VIn)
Open Loop Gain (Amplifier #1, f < 100 Hz)
Output Power;
VCC = 3.0 V, RL = 16 Ω, THD ≤ 10%
VCC = 6.0 V, RL = 32 Ω, THD ≤ 10%
VCC = 12 V, RL = 100 Ω, THD ≤ 10%
Total Harmonic Distortion (f = 1.0 kHz)
(VCC = 6.0 V, RL = 32 Ω, Pout = 125 mW)
(VCC ≥ 3.0 V, RL = 8.0 Ω, Pout = 20 mW)
(VCC ≥ 12 V, RL = 32 Ω, Pout = 200 mW)
mW
THD
%
Power Supply Rejection (VCC = 6.0 V, ∆VCC = 3.0 V)
(C1 = ∞, C2 = 0.01 µF)
(C1 = 0.1 µF, C2 = 0, f = 1.0 kHz)
(C1 = 1.0 µF, C2 = 5.0 µF, f = 1.0 kHz)
PSRR
Differential Muting (VCC = 6.0 V, 1.0 kHz ≤ f ≤ 20 kHz, CD = 2.0 V)
GMT
–
>70
–
dB
VO(3)
VO(6)
VO(12)
1.0
–
–
1.15
2.65
5.65
1.25
–
–
Vdc
VOH
VOL
–
–
VCC – 1.0
0.16
–
–
–30
0
+30
dB
AMPLIFIERS (DC CHARACTERISTICS)
Output DC Level @ VO1, VO2, VCC = 3.0 V, RL = 16 (Rf = 75 k)
VCC = 6.0 V
VCC = 12 V
Output Level
High (Iout = –75 mA, 2.0 V ≤ VCC ≤ 16 V)
Low (Iout = 75 mA, 2.0 V ≤ VCC ≤ 16 V)
Vdc
Output DC Offset Voltage (VO1–VO2)
(VCC = 6.0 V, Rf = 75 kΩ, RL = 32 Ω)
∆VO
Input Bias Current @ Vin (VCC = 6.0 V)
IIB
–
–100
–200
RFC1
RFC2
100
18
150
25
220
40
Input Voltage
Low
High
VIL
VIH
–
2.0
–
–
0.8
–
Input Resistance (VCC = VCD = 16 V)
RCD
50
90
175
kΩ
ICC3
ICC16
ICCD
–
–
–
2.7
3.3
65
4.0
5.0
100
mA
mA
µA
Equivalent Resistance
@ FC1 (VCC = 6.0 V)
@ FC2 (VCC = 6.0 V)
mV
nA
kΩ
CHIP DISABLE (Pin 1)
Vdc
POWER SUPPLY
Power Supply Current
(VCC = 3.0 V, RL = ∞, CD = 0.8 V)
(VCC= 16 V, RL = ∞, CD = 0.8 V)
(VCC = 3.0 V, RL = ∞, CD = 2.0 V)
NOTE: Currents into a pin are positive, currents out of a pin are negative.
2
MOTOROLA ANALOG IC DEVICE DATA
MC34119
PIN FUNCTION DESCRIPTION
Symbol
Pin
Description
CD
1
Chip Disable – Digital input. A Logic “0” (