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INA102AG の電気的特性と機能

INA102AGのメーカーはBurr-Brown Corporationです、この部品の機能は「Low Power INSTRUMENTATION AMPLIFIER」です。


製品の詳細 ( Datasheet PDF )

部品番号 INA102AG
部品説明 Low Power INSTRUMENTATION AMPLIFIER
メーカ Burr-Brown Corporation
ロゴ Burr-Brown Corporation ロゴ 




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INA102AG Datasheet, INA102AG PDF,ピン配置, 機能
SBOS137
® INA102
ABRIDGED DATA SHEET
For Complete Data Sheet
Call Fax Line 1-800-548-6133
Request Document Number 10523
Low Power
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW QUIESCENT CURRENT: 750µA max
q INTERNAL GAINS: 1, 10, 100, 1000
q LOW GAIN DRIFT: 5ppm/°C max
q HIGH CMR: 90dB min
q LOW OFFSET VOLTAGE DRIFT:
2µV/°C max
q LOW OFFSET VOLTAGE: 100µV max
q LOW NONLINEARITY: 0.01% max
q HIGH INPUT IMPEDANCE: 1010
APPLICATIONS
q AMPLIFICATION OF SIGNALS FROM
SOURCES SUCH AS:
Strain Gages (Weigh Scale Applications)
Thermocouples
Bridge Transducers
q REMOTE TRANSDUCER AMPLIFIER
q LOW-LEVEL SIGNAL AMPLIFIER
q MEDICAL INSTRUMENTATION
q MULTICHANNEL SYSTEMS
q BATTERY POWERED EQUIPMENT
DESCRIPTION
The INA102 is a high-accuracy monolithic instrumen-
tation amplifier designed for signal conditioning
applications where low quiescent power is desired.
On-chip thin-film resistors provide excellent tempera-
ture and stability performance. State-of-the-art laser-
trimming technology insures high gain accuracy and
common-mode rejection while avoiding expensive
external components. These features make the INA102
ideally suited for battery-powered and high-volume
applications.
The INA102 is also convenient to use. A gain of 1, 10,
100, or 1000 may be selected by simply strapping the
appropriate pins together. A gain drift of 5ppm/°C in
low gains can then be achieved without external
adjustment. When higher-than-specified CMR is
required, CMR can be trimmed using the pins pro-
vided. In addition, balanced filtering can be accom-
plished in the output stage.
1 16
12 9
14
4.44k
2
A1
V+ V–
5pF
404
20k
20k
3
40.04
4
5
5pF
5pF
20k
A3
20k
20k
20k
7
6
A2
15
5pF
13
11
10
8
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1985 Burr-Brown Corporation
PDS-523G
Printed in U.S.A. October, 1993

1 Page





INA102AG pdf, ピン配列
ELECTRICAL (CONT)
INA102AG
INA102CG
INA102KP/INA102AU
PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
DYNAMIC RESPONSE
Small Signal,
±3dB Flatness
G=1
G = 10
G = 100
G = 1000
VOUT = 0.1Vrms
300
30
3
0.3
*
*
*
*
* kHz
* kHz
* kHz
* kHz
Small Signal,
±1% Flatness
G=1
G = 10
G = 100
G = 1000
Full Power, G = 1 to 100
Slew Rate, G = 1 to 100
Settling Time
0.1%: G = 1
G = 100
G = 1000
0.01%: G = 1
G = 100
G = 1000
VOUT = 0.1Vrms
VOUT = 10V, RL = 10k
VOUT = 10V, RL = 10k
RL = 10k, CL = 100pF
10V Step
10V Step
30
3
0.3
0.03
1.7 2.5
0.1 0.15
50
360
3300
60
500
4500
*
*
*
*
**
**
*
*
*
*
*
*
*
*
*
*
**
**
*
*
*
*
*
*
kHz
kHz
kHz
kHz
kHz
V/µs
µs
µs
µs
µs
µs
µs
POWER SUPPLY
Rated Voltage
Voltage Range
Quiescent Current
TEMPERATURE RANGE
VO = 0V,
TA = TMIN to TMAX
±15 *
*
±3.5
±18 *
**
*
±500 ±750
**
**
V
V
µA
Specification
INA102AU
Operation
Storage
RL > 50k(2)
–25
–25
–65
+85
+85
+150
*
*
*
*0
–25
* –25
* –55
+70
+85
+85
+125
°C
°C
°C
°C
*Specification same as for INA102AG.
NOTES: (1) The internal gain set resistors have an absolute tolerance of ±20%; however, their tracking is 50ppm/°C. RG will add to the gain error if gains other than
1, 10, 100, or 1000 are set externally. (2) At high temperature, output drive current is limited. An external buffer can be used if required. (3) Adjustable to zero.
PIN CONFIGURATION
Top View
Offset Adjust 1
x 10 Gain 2
x 100 Gain 3
x 1000 Gain 4
x 1000 Gain Sense 5
Gain Sense 6
Gain Set 7
CMR Trim 8
DIP/SOIC
16 Offset Adjust
15 +In
14 –In
13 Filter
12 +VCC
11 Output
10 Common
9 –VCC
ORDERING INFORMATION
PRODUCT
INA102AG
INA102CG
INA102KP
INA102AU
PACKAGE
16-Pin Ceramic DIP
16-Pin Ceramic DIP
16-Pin Plastic DIP
16-Pin Plastic SOIC
TEMPERATURE RANGE
–25°C to +85°C
–25°C to +85°C
0°C to +70°C
–25°C to +85°C
®
ABSOLUTE MAXIMUM RATINGS
Supply ................................................................................................ ±18V
Input Voltage Range .......................................................................... ±VCC
Operating Temperature Range ......................................... –25°C to +85°C
Storage Temperature Range: Ceramic .......................... –65°C to +150°C
Plastic, SOIC .................. –55°C to +125°C
Lead Temperature (soldering, 10s) ............................................... +300°C
Output Short Circuit Duration ................................. Continuous to Ground
PACKAGE INFORMATION
PRODUCT
PACKAGE
PACKAGE DRAWING
NUMBER(1)
INA102AG
INA102CG
INA102KP
INA102AU
16-Pin Ceramic DIP
16-Pin Ceramic DIP
16-Pin Plastic DIP
16-Pin SOIC
109
109
180
211
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.


3Pages


INA102AG 電子部品, 半導体
DISCUSSION OF
PERFORMANCE
INSTRUMENTATION AMPLIFIERS
Instrumentation amplifiers are differential-input closed-loop
gain blocks whose committed circuit accurately amplifies the
voltage applied to their inputs. They respond mainly to the
difference between the two input signals and exhibit ex-
tremely high input impedance, both differentially and com-
mon-mode. The feedback networks of this instrumentation
amplifier are included on the monolithic chip. No external
resistors are required for gains of 1, 10, 100, and 1000 in the
INA102.
An operational amplifier, on the other hand, is an open-loop,
uncommitted device that requires external networks to close
the loop. While op amps can be used to achieve the same
basic function as instrumentation amplifiers, it is very diffi-
cult to reach the same level of performance. Using op amps
often leads to design tradeoffs when it is necessary to amplify
low-level signals in the presence of common-mode voltages
while maintaining high-input impedances. Figure 1 shows a
simplified model of an instrumentation amplifier that elimi-
nates most of the problems associated with op amps.
eO = eA + eB
eA = G (e2 – e1) = GeD
eB
=
G (e2 + e1) / 2
CMRR
= G eCM
CMRR
e2
~ed /2
eCM
~
~ed /2
e1
ZCM
~ ~Zd Za
ea
ZCM
eb
e0
Ge
eO = G eD +
CM
CMRR
Gain Set
Gain set is pin-programmable for x1, x10, x100, x1000 in the INA102.
FIGURE 1. Model of an Instrumentation Amplifier.
THE INA102
A simplified schematic of the INA102 is shown on the first
page. A three-amplifier configuration is used to provide the
desirable characteristics of a premium performance instru-
mentation amplifier. In addition, INA102 has features not
normally found in integrated circuit instrumentation amplifi-
ers.
The input buffers (A1 and A2) incorporate high performance,
low-drift amplifier circuitry. The amplifiers are connected in
the noninverting configuration to provide the high input
impedance (1010) desirable in instrumentation amplifier
applications. The offset voltage, and offset voltage versus
temperature, are low due to the monolithic design, and
improved even further by state-of-the-art laser-trimming
techniques.
The output stage (A3) is connected in a unity-gain differential
amplifier configuration. A critical part of this stage is the
matching of the four 20kresistors which provide the
difference function. These resistors must be initially well
matched and the matching must be maintained over tempera-
ture and time in order to retain good common-mode rejec-
tion.
All of the internal resistors are made of thin-film nichrome
on the integrated circuit. The critical resistors are laser-
trimmed to provide the desired high gain accuracy and
common-mode rejection. Nichrome ensures long-term sta-
bility and provides excellent TCR and TCR tracking. This
provides gain accuracy and common-mode rejection when
the INA102 is operated over wide temperature ranges.
USING THE INA102
Figure 2 shows the simplest configuration of the INA102.
The output voltage is a function of the differential input
voltage times the gain.
A gain of 1, 10, 100, or 1000 is selected by programming pins
2 through 7 (see Table I). Notice that for the gain of 1000, a
special gain sense is provided to preserve accuracy. Al-
though this is not always required, gain errors caused by
external resistance in series with the low value 40.04
internal gain set resistor are thus eliminated.
GAIN
CONNECT PINS
1
10
100
1000
6 to 7
2 to 6 and 7
3 to 6 and 7
4 to 7 and separately 5 to 6
TABLE I. Pin-Programmable Gain Connections.
15 +In
Gain = 1
7
6 INA102
11 Output
14 –In
e2
~9
~ –VCC
1µF
Tantalum
12
10
+VCC
1µF
Tantalum
10k
FIGURE 2. Basic Circuit Connection for the INA102.
®

6 Page



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部品番号部品説明メーカ
INA102AG

Low Power INSTRUMENTATION AMPLIFIER

Burr-Brown Corporation
Burr-Brown Corporation
INA102AU

Low Power INSTRUMENTATION AMPLIFIER

Burr-Brown Corporation
Burr-Brown Corporation


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