MITSUMI
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
MITSUMI
Pin Description
Pin No.
Pin name
Functions
1
-OUT1
Inverting output of AMP1
2
+OUT1
Non Inverting output AMP1
3
-IN1
Inverting input to AMP1
4
+IN1
Non Inverting input to AMP1
5
V
CC
Supply voltage input pin
6
+IN2
Non Inverting input to AMP2
7
-IN2
Inverting input to AMP2
8
+OUT2
Non Inverting output of AMP2
9
-OUT2
Inverting output of AMP2
10
GND1
GND for AMP1, AMP2
connected to GND2.
Pin No.
Pin name
Functions
11
BIAS
BIAS voltage terminal
BIAS voltage=V
CC
/2
12
-OUT3
Inverting output of AMP3
13
+OUT3
Non Inverting output of AMP3
14
-IN3
Inverting input to AMP3
15
+IN3
Non Inverting output of AMP3
16
GND2
GND for AMP3, AMP4
connected to GND1.
17
+IN4
Non Inverting output of AMP4
18
-IN4
Inverting input to AMP4
19
+OUT4
Non Inverting output of AMP4
20
-OUT4
Inverting output of AMP4
MITSUMI
Quad Differential Amp MM1366
MITSUMI
Block Diagram
Absolute Maximum Ratings
(Ta=25C)
Recommended Operating Conditions
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-20~+75
C
Supply voltage
V
CC
max.
10
V
Allowable loss
Pd
300
mW
Item
Symbol
Ratings
Units
Operating temperature
T
OPR
-20~+75
C
Operating voltage 1
V
OP
4.0~6.0
V
Operating voltage 2
V
OPBIAS
V
OP
/2
V
MITSUMI
Quad Differential Amp MM1366
Electrical Characteristics
(Except where otherwise indicated, Ta=25C, V
CC
=5V, f=1kHz, V
BIAS
=2.5V)
Internal Circuit
Item
Signal
Measurement conditions
Min. Typ. Max. Unit
Full circuit
I
CC
When non signal input,non load
current consumption
Input voltage=0, R
L
=
0.9
1.5
2.4
mA
Input impedance
Z
IN
37.5
47.0
57.5
k
Input voltage (DC)
Vi
1.0
V
CC
-1.0
V
Voltage gain 1
A
V1
R
L
=10k
, f
IN
=20Hz~10kHz
-1.0
0
+1.0
dB
Voltage gain 2 (50kHz)
A
V2
R
L
=10k
, f
IN
=50kHz
-6.0
-3.0
+1.0
dB
Voltage gain 3 (200kHz)
A
V3
R
L
=10k
, f
IN
=200kHz
-16.0 -12.0 -8.0
dB
Differencial BIAS voltage input / output
V
B
-12
12
mV
Output voltage
V
OR
1.0
V
CC
-1.0
V
Maximum output voltage
Vmax.
R
L
=10k
, When THD=10% V
BIAS
=2.5V
1.00
1.25
Vrms
Total Harmonic Distortion
THD
R
L
=10k
, Input 1.0V
P-P
0.03
0.10
%
Output impedance
Z
O
5.0
15.0
Common mode ripple rejection ratio
CMRR
R
L
=10k
, Input 1.0V
P-P
50
60
dB
Power supply ripple rejection ratio 1
PSRR1
f=100Hz, R
L
=10k
, V
CC
=1.0V
P-P
70
80
dB
Power supple ripple rejection ratio 2
PSRR2
f=20kHz, R
L
=10k
, V
CC
=1.0V
P-P
46
52
dB
Output noise voltage
V
ON
Range 10Hz~110kHz BW=10Hz~110kHz
30
90
Vrms
MITSUMI
Quad Differential Amp MM1366
MITSUMI
Output circuit
Measuring Circuit
MITSUMI
Quad Differential Amp MM1366
AMP1
+IN1
-IN1
+OUT1
-OUT1
V
CC
BIAS
GND
V
CC
BIAS
GND
V
CC
BIAS
GND
V
CC
BIAS
GND
Time Waveforns
*
1 : AMP2, AMP3, AMP4 are same as AMP1.
*
2 : BIAS voltage=V
CC
/2
MITSUMI
Quad Differential Amp MM1366
Characteristics
Application Circuit
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
Gain-Frequency
-30
-100
-80
-60
-40
-20
0
-20
-10
0
10
V
OUT
(dBV)
THD (dB)
+OUT
-OUT
V
OUT
-THD
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)
Note: The distortion rate for +IN, -OUT can be improved by -15dB as compared to +IN, -OUT.
(V
OUT
= -10dBV)
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