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SA5521N PDF даташит

Спецификация SA5521N изготовлена ​​​​«Philips» и имеет функцию, называемую «LVDT signal conditioner».

Детали детали

Номер произв SA5521N
Описание LVDT signal conditioner
Производители Philips
логотип Philips логотип 

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SA5521N Даташит, Описание, Даташиты
Philips Semiconductors Linear Products
LVDT signal conditioner
Product specification
NE/SA/SE5521
DESCRIPTION
The NE/SA/SE5521 is a signal conditioning circuit for use with
Linear Variable Differential Transformers (LVDTs) and Rotary
Variable Differential Transformers (RVDTs). The chip includes a low
distortion, amplitude-stable sine wave oscillator with programmable
frequency to drive the primary of the LVDT/RVDT, a synchronous
demodulator to convert the LVDT/RVDT output amplitude and phase
to position information, and an output amplifier to provide
amplification and filtering of the demodulated signal.
FEATURES
Low distortion
Single supply 5V to 20V, or dual supply ±2.5V to ±10V
Oscillator frequency 1kHz to 20kHz
Capable of ratiometric operation
Low power consumption (182mV typ)
APPLICATIONS
LVDT signal conditioning
RVDT signal conditioning
LPDT signal conditioning
Bridge circuits
PIN CONFIGURATIONS
F, N Packages
AMP OUT 1
+IN 2
–IN 3
LVDT IN 4
DEMOD OUT 5
SYNC 6
GND 7
N.C. 8
N.C. 9
18 V+
17 CT
16 VREF
15 FEEDBACK
14 OSC
13 OSC
12 VREF/2
11 RT
10 N.C.
TOP VIEW
D1 Package
AMP OUT 1
+IN 2
–IN 3
LVDT IN 4
DEMOD OUT 5
SYNC 6
GND 7
N.C. 8
16 V+
15 CT
14 VREF
13 FEEDBACK
12 OSC
11 OSC
10 VREF/2
9 RT
TOP VIEW
NOTE:
1. SOL — released in large SO package only.
ORDERING INFORMATION
DESCRIPTION
18-Pin Plastic Dual In-Line Package (DIP)
16-Pin Small Outline Large (SOL) Package
18-Pin Plastic Dual In-Line Package (DIP)
18-Pin Ceramic Dual In-Line Package (CERDIP)
16-Pin Ceramic Dual In-Line Package (CERDIP)
TEMPERATURE RANGE
0 to +70°C
0 to +70°C
–40 to +85°C
–55 to +125°C
–40 to +85°C
ORDER CODE
NE5521N
NE5521D
SA5521N
SE5521F
SA5521D
DWG #
0407A
0171B
0407A
0583A
0582B
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
VCC Supply voltage
Split supply voltage
Operating temperature range
NE5521
TA SA5521
SE5521
TSTG
Storage temperature range
PD Power dissipation1
NOTES:
1. For derating, see typical power dissipation versus load curves (Figure 1).
RATING
+20
±10
0 to 70
–40 to +85
–55 to +125
–65 to +125
910
UNIT
V
V
°C
°C
°C
°C
mW
August 31, 1994
901 853-0043 13721









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SA5521N Даташит, Описание, Даташиты
Philips Semiconductors Linear Products
LVDT signal conditioner
Product specification
NE/SA/SE5521
BLOCK DIAGRAM
17
CT
11
RT
18
V+
–IN
+IN
AMP
OUT
3
2
1
NOTE:
Pin numbers are for F, N packages.
VREF
16
OSC
SINE
CONV
AUX AMP
+
+
10k
10k
10k
+
10k
SYNCHRONOUS
DEMODULATOR
5
DOMOD OUT
15
FEEDBACK
13 OSC
14
OSC
12
VREF/2
7 GND/V–
4 LVDT IN
6 SYNC
PIN DEFINITIONS FOR D, F AND N PACKAGES
PIN NO.
D F, N
SYMBOL
DEFINITION
11
Amp Out
Auxiliary Amplifier Out.
22
+IN Auxiliary Amplifier non-inverting input.
33
–IN Auxiliary Amplifier inverting input.
44
LVDT IN
Input to Synchronous Demodulator from the LVDT/RVDT secondary.
55
66
77
DEMOD OUT
SYNC
GND
Pulsating DC output from the Synchronous Demodulator output. This voltage should be filtered before
use.
Synchronizing input for the Synchronizing Demodulator. This input should be connected to the OSC or
OSC output. Sync is referenced to VREF/2.
Device return. Should be connected to system ground or to the negative supply.
88
NC No internal connection.
-- 9
NC No internal connection.
-- 10
9 11
10 12
NC
RT
VREF/2
No internal connection.
A temperature stable 18kresistor should be connected between this pin and Pin 7.
A high impedance source of one half the potential applied to VREF. The LVDT/RVDT secondary return
should be to this point. A bypass capacitor with low impedance at the oscillator frequency should also be
connected between this pin and ground.
11 13
OSC
Oscillator sine wave output that is 180° out of phase with the OSC signal. The LVDT/RVDT primary is
usually connected between OSC and OSC pins.
12 14
OSC
Oscillator sine wave output. The LVDT/RVDT primaries are usually connected between OSC and OSC
pins.
13 15
FEEDBACK
Usually connected to the OSC output for unity gain, a resistor between this pin and OSC, and one be-
tween this pin and ground can provide for a change in the oscillator output pin amplitudes.
14 16
VREF
Reference voltage input for the oscillator and sine converter. This voltage MUST be stable and must not
exceed +V supply voltage.
15 17
CT Oscillator frequency-determining capacitor. The capacitor connected between this pin and ground should
be a temperature-stable type.
16 18
+V Positive supply connection.
August 31, 1994
902









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SA5521N Даташит, Описание, Даташиты
Philips Semiconductors Linear Products
LVDT signal conditioner
Product specification
NE/SA/SE5521
DC ELECTRICAL CHARACTERISTICS
V+ = VREF = 10V, TA = 0 to 70°C for NE5521, TA = –55 to +125°C for SE5521, TA = –40 to 85°C for SA5521, Frequency = 1kHz, unless
otherwise noted.
SYMBOL
PARAMETER
TEST CONDITIONS
NE5521
SA/SE5521
Min Typ Max Min Typ Max
UNIT
VCC Supply current
IREF Reference current
VREF Reference voltage range
PD Power dissipation
Oscillator Section
12.9 20
12.9 18
5.3 8
5.3 8
5 V+ 5 V+
182 280
182 260
mA
mA
V
mW
Oscillator output
THD Sine wave distortion
Initial amplitude error
Tempco of amplitude
Init. accuracy of oscillator freq.
Temperature coeff. of frequency1
Voltage coeff. of frequency
Min OSC (OSC) Load2
Demodulator Section
RL = 10k
No load
TA = 25°C
TA = 25°C
VREF
8.8
300
1.5
0.4
0.005
±0.9
0.05
2.5
170
±3
0.01
±5
VREF
8.8
1.5
0.4 ±3
0.005 0.01
±0.9 ±5
0.05
3.3
300 170
VRMS
%
%
%/°C
%
%/°C
%/V(VREF)
r Linearity error
Maximum demodulator input
VOS Demodulator offset voltage
TCVOS Demodulator offset voltage drift
IBIAS Demodulator input current
VR/2 accuracy
Auxiliary Output Amplifier
5VP-P input
±0.05 ±0.1
±0.05 ±0.1
VREF
2
±1.4
±5
VREF
2
±1.4
±5
5 25
5 25
–600 –234
–500 –234
±0.1 ±1
±0.1 ±1
%FS
VP-P
mV
µV/5C
nA
%
VOS Input offset voltage
±0.5 ±5
±0.5 ±5
mV
IBIAS Input bias current
–600 –210
–500 –210
nA
IOS Input offset current
10 50
10 50
nA
AV Gain
SR Slew rate
100 385
1.3
100 385
1.3
V/mV
V/µs
GBW
Unity gain bandwidth product
Output voltage swing
AV = 1
RL = 10k
1.6
7 8.2
1.6
7 8.2
MHz
V
Output short circuit current to
ground or to VCC
TA = 25°C
42 100
42 100
mA
NOTES:
1. This is temperature coefficient of frequency for the device only. It is assumed that CT and RT are fixed in value and CT leakage is fixed over
the operating temperature range.
2. Minimum load impedance for which distortion is guaranteed to be less than 5%.
August 31, 1994
903










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