Burr Brown INA2126UA-2K5, INA2126UA, INA2126PA, INA2126EA-250, INA2126E-2K5 Datasheet

®

INA126

INA126

INA2126

INA2126

INA2126

INA126

INA2126

MicroPOWER INSTRUMENTATION AMPLIFIER

Single and Dual Versions

FEATURES

●LOW QUIESCENT CURRENT: 175μA/chan.

●WIDE SUPPLY RANGE: ±1.35V to ±18V

●LOW OFFSET VOLTAGE: 250μV max

●LOW OFFSET DRIFT: 3μV/°C max

●LOW NOISE: 35nV/Ö Hz

●LOW INPUT BIAS CURRENT: 25nA max

●8-PIN DIP, SO-8, MSOP-8 SURFACEMOUNT DUAL: 16-Pin DIP, SO-16, SSOP-16

DESCRIPTION

The INA126 and INA2126 are precision instrumentation amplifiers for accurate, low noise differential signal acquisition. Their two-op-amp design provides excellent performance with very low quiescent current (175mA/chan.). This, combined with wide operating voltage range of ±1.35V to

±18V, makes them ideal for portable instrumentation and data acquisition systems.

Gain can be set from 5V/V to 10000V/V with a single external resistor. Laser trimmed input circuitry provides low offset voltage (250mV max), low offset voltage drift (3mV/°C max) and excellent common-mode rejection.

APPLICATIONS

●INDUSTRIAL SENSOR AMPLIFIER: Bridge, RTD, Thermocouple

●PHYSIOLOGICAL AMPLIFIER: ECG, EEG, EMG

●MULTI-CHANNEL DATA ACQUISITION

●PORTABLE, BATTERY OPERATED SYSTEMS

VIN+ 3

8

RG

1

VIN– 2

V+
7
INA126
	6		= (V	+	– V–) G
	V	O
				IN	IN
40kΩ			G = 5 + 80k
					RG
10kΩ
10kΩ
40kΩ	5
4
V–

Single version package options include 8-pin plastic DIP, SO-8 surface mount, and fine-pitch MSOP-8 surface-mount. Dual version is available in the space-saving SSOP-16 finepitch surface mount, SO-16, and 16-pin DIP. All are specified for the –40°C to +85°C industrial temperature range.

				V+
VIN+	2	INA2126	9
			6			= (V +		–) G
	4			V	O		– V
		40kΩ				IN	IN
			7			G = 5 +		80k
		10kΩ						RG
	RG
	3	10kΩ
VIN–	1	40kΩ
			5
VIN+	15		11			= (V+		–) G
				V			– V
	13				O
		40kΩ				IN		IN
						G = 5 +		80k
		10kΩ	10					RG
	RG
	14	10kΩ
VIN–	16	40kΩ
	8		12
	V–

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111 Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

© 1996 Burr-Brown Corporation PDS-1365C Printed in U.S.A. September, 1997

SPECIFICATIONS

At TA = +25°C, VS = ±15V, RL = 25kW, unless otherwise noted.

INA126P, U, E

INA126PA, UA, EA

INA2126P, U, E

INA2126PA, UA, EA

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

INPUT

Offset Voltage, RTI

±100

±250

±150

±500

mV

vs Temperature

±0.5

±3

±5

mV/°C

vs Power Supply (PSRR)

VS = ±1.35V to ±18V

5

15

50

mV/V

Input Impedance

109 || 4

W || pF

Safe Input Voltage

RS = 0

(V–)–0.5

(V+)+0.5

V

RS = 1kW

(V–)–10

(V+)+10

V

Common-Mode Voltage Range

VO = 0V

±11.25

±11.5

V

Channel Separation (dual)

G = 5, dc

130

dB

Common-Mode Rejection

RS = 0, VCM = ±11.25V

83

94

74

90

dB

INA2126U (dual SO-16)

80

94

dB

INPUT BIAS CURRENT

–10

–25

–50

nA

vs Temperature

±30

pA/°C

Offset Current

±0.5

±2

±5

nA

vs Temperature

±10

pA/°C

GAIN

G = 5 to 10k

V/V

Gain Equation

G = 5 + 80kW/RG

V/V

Gain Error

VO = ±14V, G = 5

±0.02

±0.1

±0.18

%

vs Temperature

G = 5

±2

±10

ppm/°C

Gain Error

VO = ±12V, G = 100

±0.2

±0.5

±1

%

vs Temperature

G = 100

±25

±100

ppm/°C

Nonlinearity

G = 100, VO = ±14V

±0.002

±0.012

%

NOISE

Voltage Noise, f = 1kHz

35

nV/Ö

Hz

f = 100Hz

35

nV/Ö

Hz

f = 10Hz

45

nV/Ö

Hz

fB = 0.1Hz to 10Hz

0.7

mVp-p

Current Noise, f = 1kHz

60

fA/Ö

Hz

fB = 0.1Hz to 10Hz

2

pAp-p

OUTPUT

Voltage, Positive

RL = 25kW

(V+)–0.9

(V+)–0.75

V

Negative

RL = 25kW

(V–)+0.95

(V–)+0.8

V

Short-Circuit Current

Short-Circuit to Ground

+10/–5

mA

Capacitive Load Drive

1000

pF

FREQUENCY RESPONSE

Bandwidth, –3dB

G = 5

200

kHz

G = 100

9

kHz

G = 500

1.8

kHz

Slew Rate

VO = ±10V, G = 5

0.4

V/ms

Settling Time, 0.01%

10V Step, G = 5

30

ms

10V Step, G = 100

160

ms

10V Step, G = 500

1500

ms

Overload Recovery

50% Input Overload

4

ms

POWER SUPPLY

Voltage Range

±1.35

±15

±18

V

Current (per channel)

IO = 0

±175

±200

mA

TEMPERATURE RANGE

Specification Range

–40

+85

°C

Operation Range

–55

+125

°C

Storage Range

–55

+125

°C

Thermal Resistance, θJA

8-Pin DIP

100

°C/W

SO-8 Surface-Mount

150

°C/W

MSOP-8 Surface-Mount

200

°C/W

16-Pin DIP (dual)

80

°C/W

SO-16 (dual)

100

°C/W

SSOP-16 (dual)

100

°C/W

Specification same as INA126P, INA126U, INA126E; INA2126P, INA2126U, INA2126E.

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.

®

	INA126, INA2126	2

PIN CONFIGURATION (Single)

Top View			8-Pin DIP, SO-8, MSOP-8
RG	1		8	RG
V–
	2		7	V+
IN
V+
	3		6	V	O
IN
V–	4		5	Ref

ABSOLUTE MAXIMUM RATINGS(1)

........................................................Power Supply Voltage, V+ to V–	36V
Input Signal Voltage(2) ...........................................	(V–)–0.7 to (V+)+0.7V
Input Signal Current(2) ......................................................................	10mA
Output Short Circuit .................................................................	Continuous
Operating Temperature .................................................	–55°C to +125°C
Storage Temperature .....................................................	–55°C to +125°C
Lead Temperature (soldering, 10s) ...............................................	+300°C

NOTES: (1) Stresses above these ratings may cause permanent damage.

(2) Input signal voltage is limited by internal diodes connected to power supplies. See text.

PIN CONFIGURATION (Dual)

Top View		16-Pin DIP, SO-16, SSOP-16
V–				V–
	1		16
INA				INB
V+				V+
	2		15
INA				INB
RGA	3		14	RGB
RGA	4		13	RGB
RefA	5		12	RefB
			11
VOA	6			VOB
SenseA	7		10	SenseB
			9
V–	8			V+

PACKAGE INFORMATION

ELECTROSTATIC DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

		PACKAGE DRAWING			TRANSPORT
PRODUCT	PACKAGE	NUMBER(1)	PACKAGE MARKING	ORDERING NUMBER	MEDIA
Single
INA126PA	8-Pin DIP	006	INA126PA	INA126PA	Rails
INA126P	8-Pin DIP	006	INA126P	INA126P	Rails
INA126UA	SO-8	182	INA126UA	INA126UA	Rails or Reel
INA126U	SO-8	182	INA126U	INA126U	Rails or Reel
INA126EA(2)	MSOP-8	337	A26(3)	INA126EA-250	Reel Only
"	"	"	"	INA126EA-2500	"
INA126E(2)	MSOP-8	337	A26(3)	INA126E-250	Reel Only
"	"	"	"	INA126E-2500	"
Dual
INA2126PA	16-Pin DIP	180	INA2126PA	INA2126PA	Rails
INA2126P	16-Pin DIP	180	INA2126P	INA2126P	Rails
INA2126UA	SO-16	265	INA2126UA	INA2126UA	Rails
INA2126U	SO-16	265	INA2126U	INA2126U	Rails
INA2126EA(2)	SSOP-16	322	INA2126EA	INA2126EA-250	Reel Only
"	"	"	"	INA2126EA-2500	"
INA2126E(2)	SSOP-16	322	INA2126E	INA2126E-250	Reel Only
"	"	"	"	INA2126E-2500	"

NOTES: (1) For detailed drawing and dimension table, see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) MSOP-8 and SSOP-16 packages are available only on 250 or 2500 piece reels. (3) Grade designation is marked on reel.

®

3	INA126, INA2126