NOTES: (1) Figures given are percent of full scale,
±10V
(i.e., 0.01% = 1mV). (2) May be reduced to 3V using external resistor between –V
S
and SF. (3) Irreducible
component due to nonlinearity; excludes effect of offsets. (4) KP grade only. (5) KP grade only. 0°C to +70°C for KU grade.
PIN CONFIGURATIONS
Top View
X
1
Input
X
1
X
2
SF
Y
1
2
3
Y
2
4
5
–V
S
TO-100: MPY634AM/BM/SM
6
10
1
9
+V
S
8
7
Z
2
Out
Scale Factor
Z
1
NC
Y
1
Input
Y
2
Input
4
5
6
7
DIP: MPY634KP
11 Z
1
Input
10 Z
2
Input
9
8
NC
–V
S
NC
Y
1
Input
Y
2
Input
NC
5
6
7
8
SOIC: MPY634KU
X
1
Input
X
2
Input
NC
1
2
3
14 +V
S
13 NC
12 Output
X
2
Input
NC
Scale Factor
1
2
3
4
16 +V
S
15 NC
14 Output
13 Z
1
Input
12 Z
2
Input
11 NC
10 –V
S
9
NC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Power Supply Voltage
Power Dissipation
Output Short-Circuit
to Ground
Input Voltage ( all X,
Y and Z)
Temperature Range:
Operating
Storage
Lead Temperature
(soldering, 10s)
SOIC ‘KU’ Package
MPY634AM/BM MPY634KP/KU
±18
500mW
Indefinite
±V
S
–25°C/+85°C
–65°C/+150°C
+300°C
*
*
*
*
*
–40°C/+85°C
*
+260°C
MPY634SM
±20
*
*
*
–55°C/+125°C
*
*
ORDERING INFORMATION
MPY634
Basic Model Number
Performance Grade
(1)
K: –25°C to +85°C (‘U’ package 0°C to +70°C)
A: –25°C to +85°C
B: –25°C to +85°C
S: –55°C to +125°C
Package Code
M: TO-100 Metal
P: Plastic 14-pin DIP
U: 16-pin SOIC
NOTE: (1) Performance grade identifier may not be marked on the SOIC
package; a blank denotes “K” grade.
( )
( )
* Specification same as for MPY634AM/BM.
PACKAGE INFORMATION
PACKAGE DRAWING
MODEL
PACKAGE
NUMBER
(1)
MPY634KP
14-Pin PDIP
010
MPY634KU
16-Pin SOIC
211
MPY634AM
TO-100
007
MPY634BM
TO-100
007
MPY634SM
TO-100
007
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.
®
3
MPY634
TYPICAL PERFORMANCE CURVES
T
A
= +25°C, V
S
=
±15VDC,
unless otherwise noted.
FEEDTHROUGH vs FREQUENCY
–20
Feedthrough Attenuation (dB)
FREQUENCY RESPONSE AS A MULTIPLIER
10
Normal Connection
C
L
= 1000pF
–40
Output Response (dB)
0
C
L
= 0pF
–10
With
X10
Feedback
Attenuator
–20
–60
X Feedthrough
–80
Y Feedthrough
–100
100
1k
10k
100k
Frequency (Hz)
1M
10M
100M
–30
1k
10k
100k
1M
10M
100M
Frequency (Hz)
COMMON-MODE REJECTION RATIO vs FREQUENCY
90
–50
80
70
Typical for all inputs
FEEDTHROUGH vs TEMPERATURE
Feedthrough Attenuation (dB)
CMRR (dB)
60
50
40
30
20
10
0
100
10k
100M
Frequency (Hz)
1M
10M
–60
f
Y
= 500kHz
V
X
= nulled
–70
nulled at 25°C
–80
–60 –40 –20
0
20
40
60
80
100
120 140
Temperature (°C)
NOISE SPECTRAL DENSITY
vs FREQUENCY
1.5
Noise Spectral Density (µV/√Hz)
FREQUENCY RESPONSE AS A DIVIDER
60
V
X
= 100mVDC
V
Z
= 10mVrms
V
X
= 1VDC
V
Z
= 100mVrms
V
X
= 10VDC
V
Z
= 100mVrms
0
Output, V
0
/ V
2
(dB)
1.25
40
1
20
0.75
0.5
10
100
1k
Frequency (Hz)
10k
100k
–20
1k
10k
100k
1M
10M
100M
Frequency (Hz)
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject
to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not
authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.
®
MPY634
4
TYPICAL PERFORMANCE CURVES
(CONT)
T
A
= +25°C, V
S
=
±15VDC,
unless otherwise noted.
INPUT DIFFERENTIAL-MODE/
COMMON-MODE VOLTAGE
10
V
CM
INPUT/OUTPUT SIGNAL RANGE
vs SUPPLY VOLTAGES
14
Peak Positive or Negative Signal (V)
12
Output, R
L
≥
2kΩ
10
All inputs, SF = 10V
8
5
Specified
Accuracy
5
V
S
= ±15V
10
12
V
DIFF
–12
–10
–5
–5
6
4
8
10
12
14
16
18
20
Positive or Negative Supply (V)
–10
Functional
Derated Accuracy
BIAS CURRENTS vs TEMPERATURE
(X,Y or Z Inputs)
800
700
Bias Current (nA)
600
500
Scaling Voltage = 10V
400
300
Scaling Voltage = 3V
200
100
0
–60 –40 –20
0
20
40
60
80
100 120 140
Temperature (°C)
THEORY OF OPERATION
The transfer function for the MPY634 is:
V
OUT
= A
where:
A = open-loop gain of the output amplifier (typically
85dB at DC).
SF = Scale Factor. Laser-trimmed to 10V but adjustable
over a 3V to 10V range using external resistors.
X, Y, Z are input voltages. Full-scale input voltage
is equal to the selected SF. (Max input voltage =
±1.25
SF).
An intuitive understanding of transfer function can be gained
by analogy to the op amp. By assuming that the open-loop
gain, A, of the output operational amplifier is infinite,
(X
1
– X
2
) (Y
1
– Y
2
)
SF
– (Z
1
– Z
2
)
inspection of the transfer function reveals that any V
OUT
can
be created with an infinitesimally small quantity within the
brackets. Then, an application circuit can be analyzed by
assigning circuit voltages for all X, Y and Z inputs and
setting the bracketed quantity equal to zero. For example,
the basic multiplier connection in Figure 1, Z
1
= V
OUT
and
Z
2
= 0. The quantity within the brackets then reduces to:
(X
1
– X
2
) (Y
1
– Y
2
)
SF
– (V
OUT
– 0) = 0
This approach leads to a simple relationship which can be
solved for V
OUT
to provide the closed-loop transfer function.
The scale factor is accurately factory adjusted to 10V and is
typically accurate to within 0.1% or less. The scale factor
may be adjusted by connecting a resistor or potentiometer
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