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Quad Differential Amp MM1366
Quad Differential Amp
Monolithic IC MM1366
Outline
This IC is a 0dB gain amp with 4 channels of built-in differential input and differential output. It has powerful
noise removal at common mode level.
Features
(1) S/N can be improved for common mode noise on internal and external signal transmission due to
differential input/output.
(2) CMRR (common mode rejection ratio): 60 dB typ.
(3) PSRR (power supply rejection ratio): 80 dB typ.
(4) Consumption current 1.5mA typ.
Package
TSOP-20A
Applications
(1) Notebook PC audio
Pin Description
Pin No. Pin name Functions
1
2 +OUT1 Non Inverting output AMP1
3
4 +IN1
5 VCC Supply voltage input pin
6 +IN2
7
8 +OUT2
9
10 GND1
-
OUT1 Inverting output of AMP1
-
IN1 Inverting input to AMP1
Non Inverting input to AMP1
Non Inverting input to AMP2
-
IN2 Inverting input to AMP2
Non Inverting output of AMP2
-
OUT2 Inverting output of AMP2
GND for AMP1, AMP2
connected to GND2.
Pin No. Pin name Functions
11 BIAS
12
13 +OUT3
14
15 +IN3
16 GND2
17 +IN4
18
19 +OUT4
-
OUT3 Inverting output of AMP3
-
IN3 Inverting input to AMP3
-
IN4 Inverting input to AMP4
BIAS voltage terminal
BIAS voltage=V
Non Inverting output of AMP3
Non Inverting output of AMP3
GND for AMP3, AMP4
connected to GND1.
Non Inverting output of AMP4
Non Inverting output of AMP4
CC/2
20
-
OUT4 Inverting output of AMP4
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Block Diagram
Quad Differential Amp MM1366
Absolute Maximum Ratings
(Ta=25°C)
Item Symbol Ratings Units
Storage temperature T
Operating temperature T
Supply voltage V
CCmax. 10 V
Allowable loss Pd 300 mW
Recommended Operating Conditions
Item Symbol Ratings Units
Operating temperature T
Operating voltage 1 V
Operating voltage 2 V
STG
OPR
OPR
OP 4.0~6.0 V
OPBIAS VOP/2 V
-
40~+125 °C
-
20~+75 °C
-
20~+75 °C
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Quad Differential Amp MM1366
Electrical Characteristics
(Except where otherwise indicated, Ta=25°C, VCC=5V, f=1kHz, V
Item Signal Measurement conditions Min. Typ. Max. Unit
Full circuit
CC
I
When non signal input,non load
current consumption Input voltage=0, R
Input impedance Z
IN 37.5 47.0 57.5 kΩ
Input voltage (DC) Vi 1.0
Voltage gain 1 A
Voltage gain 2 (50kHz) A
Voltage gain 3 (200kHz) A
Differencial BIAS voltage input / output
Output voltage V
Maximum output voltage Vmax. R
Total Harmonic Distortion THD R
Output impedance Z
Common mode ripple rejection ratio
Power supply ripple rejection ratio 1
Power supple ripple rejection ratio 2
V1 RL=10kΩ, fIN=20Hz~10kHz
V2 RL=10kΩ, fIN=50kHz
V3 RL=10kΩ, fIN=200kHz
VB
OR 1.0
L=10kΩ, When THD=10% VBIAS=2.5V 1.00 1.25 Vrms
L=10kΩ, Input 1.0VP
O 5.0 15.0 Ω
CMRR RL=10kΩ, Input 1.0VP
PSRR1 f=100Hz, RL=10kΩ, VCC=1.0VP
PSRR2 f=20kHz, RL=10kΩ, VCC=1.0VP
L=∞
VCC-
0.9 1.5 2.4 mA
-
1.0 0 +1.0 dB
-
6.0-3.0 +1.0 dB
-
16.0-12.0-8.0 dB
-
12 12 mV
VCC-
-
P 0.03 0.10 %
-
P 50 60 dB
-
P 70 80 dB
-
P 46 52 dB
BIAS
1.0
1.0
=2.5V)
V
V
Output noise voltage V
Internal Circuit
ON Range 10Hz~110kHz BW=10Hz~110kHz 30 90
µVrms
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Output circuit
Measuring Circuit
Quad Differential Amp MM1366
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AMP1
+IN1
-
IN1
+OUT1
-
OUT1
VCC
BIAS
GND
V
CC
BIAS
GND
V
CC
BIAS
GND
V
CC
BIAS
GND
Time Waveforns
Quad Differential Amp MM1366
1 : AMP2, AMP3, AMP4 are same as AMP1.
*
2 : BIAS voltage=VCC/2
*
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1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06
0
-
2
-
4
-
6
-
8
-
10
-
12
Frequency (Hz)
Gain (dB)
+IN1, -OUT
-
30
-
100
-
80
-
60
-
40
-
20
0
-
20
-
10 0 10
VOUT (dBV)
THD (dB)
+OUT
-
OUT
Application Circuit
Quad Differential Amp MM1366
Note 1 : This is 0dB defferential amp that have plus and minus pin at input and output.
(The condition of measuring gain is single input and output.)
Note 2 : The gain is 6dB at typical application circuit.
Note 3 : When connect A amplifier 2 and B Amplifier 3, improve for distortion rate from
THD1=
-
70dB to THD2=-75dB. (when +OUT3 output-10dB voltage)
Characteristics
Gain-Frequency
VOUT-THD
Note: The distortion rate for +IN, -OUT can be improved by -15dB as compared to +IN, -OUT.
(VOUT = -10dBV)
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