Texas Instruments OPA735, OPA735AIDRG4 Datasheet

OPA734, OPA2734

OPA735, OPA2735

SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005

0.05 V/°C max, SINGLE-SUPPLY CMOS

OPERATIONAL AMPLIFIERS

Zer -Drift Series

FEATURES

DLOW OFFSET VOLTAGE: 5 V (max)

DZERO DRIFT: 0.05 V/°C max

DQUIESCENT CURRENT: 750 A (max)

DSINGLE-SUPPLY OPERATION

DLOW BIAS CURRENT: 200pA (max)

DSHUTDOWN

DMicroSIZE PACKAGES

DWIDE SUPPLY RANGE: 2.7V to 12V

APPLICATIONS

DTRANSDUCER APPLICATIONS

DTEMPERATURE MEASUREMENTS

DELECTRONIC SCALES

DMEDICAL INSTRUMENTATION

DBATTERY-POWERED INSTRUMENTS

DHANDHELD TEST EQUIPMENT

DESCRIPTION

The OPA734 and OPA735 series of CMOS operational amplifiers use auto-zeroing techniques to simultaneously provide low offset voltage (5 V max) and near-zero drift over time and temperature. These miniature, high-preci- sion, low quiescent current amplifiers offer high input impedance and rail-to-rail output swing within 50mV of the rails. Either single or bipolar supplies can be used in the range of +2.7V to +12V (±1.35V to ±6V). They are optimized for low-voltage, single-supply operation.

The OPA734 family includes a shutdown mode. Under logic control, the amplifiers can be switched from normal operation to a standby current that is 9 A (max) and the output placed in a high-impedance state.

The single version is available in the MicroSIZE SOT23-5 (SOT23-6 for shutdown version) and the SO-8 packages. The dual version is available in the MSOP-8 and SO-8 packages (MSOP-10 only for the shutdown version). All versions are specified for operation from −40 °C to +85°C.

VREF = 15V

G = 1 + 2

R3

REF102

R

G

10V

R1

C

1kΩ

1

1nF

		1/2
		OP A2735
		R3
		10kΩ
		C4
		1nF
C2	RG	C4
10nF		1nF
		R3
		10kΩ
R2		1/2
1kΩ		OP A2735

C3 1nF

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date. Products	Copyright 2003-2005, Texas Instruments Incorporated
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.

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OPA734, OPA2734

OPA735, OPA2735

www.ti.com

SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005

ABSOLUTE MAXIMUM RATINGS(1)

. . . . . . . . . . . . . . . . . . . . . . . . . . . .Supply Voltage	. . . . . . . . . . . .	. . . +13.2V
Signal Input Terminals, Voltage(2) . . . . . . . . . . .	(V−) − 0.5V to (V+) + 0.5V
Current(2) . . . . . . . . . . . .	. . . . . . . . . . . . .	. . ±10mA
Output Short Circuit(3) . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . .	Continuous
Operating Temperature . . . . . . . . . . . . . . . . . . . . .	. . . . . . . −40 °C to +150°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . −65 °C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . .	. . +150°C
Lead Temperature (soldering, 10s) . . . . . . . . . . . .	. . . . . . . . . . . . .	. . +300°C
ESD Rating (Human Body Model), OPA734 . . . .	. . . . . . . . . . . . .	. . . 1000V
ESD Rating (Human Body Model), OPA735, OPA2734, OPA2735 .		. . . 2000V

(1)Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied.

(2)Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be current limited to 10mA or less.

(3)Short-circuit to ground, one amplifier per package.

This integrated circuit can be damaged by ESD. Texas Instruments 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/ORDERING INFORMATION(1)

			PACKAGE	SPECIFIED	PACKAGE	ORDERING	TRANSPORT MEDIA,
	PRODUCT	PACKAGE-LEAD		TEMPERATURE
			DESIGNATOR		MARKING	NUMBER	QUANTITY
				RANGE
	Shutdown Version
	OPA734	SOT23-6	DBV	−40 °C to +85°C	NSB	OPA734AIDBVT	Tape and Reel, 250
	″	″	″	″	″	OPA734AIDBVR	Tape and Reel, 3000
	OPA734	SO-8	D	−40 °C to +85°C	OPA734A	OPA734AID	Rails, 100
	″	″	″	″	″	OPA734AIDR	Tape and Reel, 2500
	OPA2734	MSOP-10	DGS	−40 °C to +85°C	BGO	OPA2734AIDGST	Tape and Reel, 250
	″	″	″	″	″	OPA2734AIDGSR	Tape and Reel, 2500
	Non-Shutdown Version
	OPA735	SOT23-5	DBV	−40 °C to +85°C	NSC	OPA735AIDBVT	Tape and Reel, 250
	″	″	″	″	″	OPA735AIDBVR	Tape and Reel, 3000
	OPA735	SO-8	D	−40 °C to +85°C	OPA735A	OPA735AID	Rails, 100
	″	″	″	″	″	OPA735AIDR	Tape and Reel, 2500
	OPA2735	SO-8	D	−40 °C to +85°C	OPA2735A	OPA2735AID	Rails, 100
	″	″	″	″	″	OPA2735AIDR	Tape and Reel, 2500
	OPA2735	MSOP-8	DGK	−40 °C to +85°C	BGN	OPA2735AIDGKT	Tape and Reel, 250
	″	″	″	″	″	OPA2735AIDGKR	Tape and Reel, 2500

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.

2

OPA734, OPA2734

OPA735, OPA2735

www.ti.com

SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005

ELECTRICAL CHARACTERISTICS: VS = ±5V (VS = +10V)

Boldface limits apply over the specified temperature range, TA = −40 °C to +85°C.

At TA = +25°C, RL = 10kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.

			OPA734, OPA2734, OPA735, OPA2735
PARAMETER		CONDITIONS	MIN	TYP		MAX	UNIT
OFFSET VOLTAGE
Input Offset Voltage	VOS			1		5	µV
vs Temperature	dVOS/dT			0.01		0.05	µV/°C
vs Power Supply	PSRR	VS = 2.7V to 12V, VCM = 0V		0.2		1.8	µV/V
Long-Term Stability				Note (1)
Channel Separation, dc				0.1			µV/V
INPUT BIAS CURRENT
Input Bias Current	IB	VCM = VS/2		±100		±200	pA
over Temperature			See Typical Characteristics				pA
Input Offset Current	IOS	VCM = VS/2		±200		±300	pA
NOISE
Input Voltage Noise, f = 0.01Hz to 1Hz	en			0.8			µVPP
Input Voltage Noise, f = 0.1Hz to 10Hz	en			2.5			µVPP
Input Voltage Noise Density, f = 1kHz	en			135			nV/√Hz
Input Current Noise Density, f = 1kHz	in			40			fA/√	Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range	VCM		(V−) − 0.1			(V+) − 1.5	V
Common-Mode Rejection Ratio	CMRR	(V−) − 0.1V < V CM < (V+) − 1.5V	115	130			dB
INPUT CAPACITANCE
Differential				2			pF
Common-Mode				10			pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain	AOL	(V−) + 100mV < V O < (V+) − 100mV	115	130			dB
FREQUENCY RESPONSE
Gain-Bandwidth Product	GBW			1.6			MHz
Slew Rate	SR	G = +1		1.5			V/µs
OUTPUT
Voltage Output Swing from Rail		RL = 10kΩ		20		50	mV
Short-Circuit Current	ISC			±20			mA
Open-Loop Output Impedance		f = 1MHz, IO = 0		125			Ω
Capacitive Load Drive	CLOAD		See	Typical Characteristics
ENABLE/SHUTDOWN
tOFF				1.5			µs
tON(2)				150			µs
VL (amplifier is shutdown)			V−			(V−) + 0.8	V
VH (amplifier is active)			(V−) + 2			V+	V
IQSD (per amplifier)				4		9	µA
Input Bias Current of Enable Pin				3			µA
POWER SUPPLY
Operating Voltage Range	VS			2.7 to 12			V
				(±1.35 to ±6)
Quiescent Current (per amplifier)	IQ	IO = 0		0.6		0.75	mA
TEMPERATURE RANGE
Specified Range			−40			+85	°C
Operating Range			−40			+150	°C
Storage Range			−65			+150	°C
Thermal Resistance	qJA						°C/W
SOT23-5, SOT23-6				200			°C/W
MSOP-8, MSOP-10, SO-8				150			°C/W

(1)300-hour life test at 150°C demonstrated randomly distributed variation in the range of measurement limits—approximately 1 µV.

(2)Device requires one complete auto-zero cycle to return to VOS accuracy.

3

OPA734, OPA2734
OPA735, OPA2735
											www.ti.com
SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005
PIN CONFIGURATIONS
							OPA735				OPA2735
		OPA735
					NC(1)	1	8	NC(1)	OUT A	1	8	V+
Out		1		5
					V+				−IN A	2	7	OUT B
V−					−IN	2	7	V+
		2
									+IN A	3	6	−IN B
					+IN	3	6	OUT
+IN		3		4
					−IN				V−	4	5	+IN B
					V−	4	5	NC(1)
		SOT23−5									SO−8, MSOP−8
							SO−8
							OPA734				OPA2734
		OPA734
		NSB			NC(1)	1	8	Enable	OUT A	1	10	V+
Out	1		6
					V+				− IN A	2	9	OUT B
					− IN	2	7	V+
V−	2		5
					Enable				+IN A	3	8	− IN B
					+IN	3	6	OUT
+IN	3		4
					−IN				V−	4	7	+IN B
					V−	4	5	NC(1)
		SOT23−6 (2)							Enable A	5	6	Enable B
							SO−8				MSOP−10

(1)NC = No Connection

(2)Pin 1 of the SOT23-6 is determined by orienting the package marking as shown in the diagram.

4

OPA734, OPA2734

OPA735, OPA2735

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SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005

TYPICAL CHARACTERISTICS

At TA = +25°C, VS = ±5V (same as +10V).

OUTPUT VOLTAGE PRODUCTION DISTRIBUTION

Population
− 5.0	− 4.5	− 4.0	− 3.5	− 3.0	− 2.5	− 2.0	− 1.5	− 1.0	− 0.5	0	0.5	1.0	1.5	2.0	2.5	3.0	3.5	4.0	4.5	5.0

Offset Voltage (µV)

OUTPUT VOLTAGE SWING TO RAIL vs OUTPUT CURRENT

	6
(V)	4
					+85_C										−40_C
Swing	2
Voltage	0										+25_C
OUT	−2
V	−4
	−6
	0		5		10		15			20				25		30		35
							Output Current (mA)

INPUT BIAS CURRENT vs TEMPERATURE

	1000
	VCM = VS/2
	800
(pA)	600			+IB
	400
Current	200
	0
Bias	−200	−IB
Input	−400
					10 Representative Units
	−600
	−800
	−1000
	−50	− 25	0	25	50	75 85	100	125

Temperature (_C)

OUTPUT VOLTAGE DRIFT PRODUCTION DISTRIBUTION

							Absolute Value;
						Centered Around Zero
Population
0	0.005	0.010	0.015	0.020	0.025	0.030	0.035	0.040	0.045	0.050
			Offset Voltage Drift (µV/_C)

INPUT BIAS CURRENT vs TEMPERATURE

	1000
	0
(pA)	−1000	− IB		+ I
	−2000			B
Current	−3000
	−4000
	−5000
Bias					10 Representative Units
	−6000
Input
	−7000
	−8000
	−9000	VCM = V−
	− 10000
	−50	− 25	0	25	50	75 85	100	125
				Temperature (_C)

SUPPLY CURRENT vs TEMPERATURE

	800
(µA)	600			± 6V
Supply Current	400			± 1.35V
	200
	0
	−50	−25	0	25	50	75	100	125
				Temperature (_C)

5

OPA734, OPA2734

OPA735, OPA2735

SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005

TYPICAL CHARACTERISTICS (continued)

At TA = +25°C, VS = ±5V (same as +10V).

OPEN−LOOP GAIN AND PHASE MARGIN vs FREQUENCY

	180																																																				180
	160																																																				160
	140																																																				140
	120																																																				120	)
	100																																																				100	(_
OL																																																						Margin
	60																																																				60
(dB)	80																																																				80
A																																																						Phase
	40																																																			40
	20																																																			20
	0																																																			0
	− 20																																																				−20
	− 40																																																				−40
	0.1									1				10					100							1k				10k					100k						1M					10M
																					Frequency (Hz)
															SMALL−SIGNAL RESPONSE
	Output Voltage (10mV/div)
																				Time (250ns/div)

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LARGE−SIGNAL RESPONSE

Output Voltage (2V/div)

Time (5µs/div)

POSITIVE OVERVOLTAGE RECOVERY

	Output
(2V/div)
Voltage		+5V
		10kΩ
	10kΩ
		OPA735
	Input	− 5V
	Time (2.5µs/div)

	NEGATIVE OVERVOLTAGE RECOVERY
			10kΩ
		10kΩ	+5V
Voltage(2V/div)			OPA 73 5	CMRR(dB)
	Input		Output
			− 5V
	Time (2.5µs/div)

COMMON−MODE REJECTION RATIO vs FREQUENCY

140

120

100

80

60

40

20

0

1	10	100	1k	10k	100k	1M	10M
			Frequency (Hz)

6

OPA734, OPA2734

OPA735, OPA2735

www.ti.com

SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005

TYPICAL CHARACTERISTICS (continued)

At TA = +25°C, VS = ±5V (same as +10V).

PSRR (dB)

POWER−SUPPLY REJECTION RATIO vs FREQUENCY

160

140

+PSRR

120

100

80

− PSRR

60

40

20

0

1 10 100 1k 10k 100k 1M

Frequency (Hz)

0.1Hz TO 10Hz NOISE

1 V/div

1s/div

VOLTAGE NOISE vs FREQUENCY

		(nV/√Hz)	1k
			100
		Noise	10
			1							10				100															1k							10k										100k
																		Frequency (Hz)
						SAMPLING FREQUENCY vs TEMPERATURE
			20.0
		(kHz)	19.5
			19.0
		Frequency																				VS = 12V
			18.5
		Sampling	18.0
			17.5																													VS = 2.7V
			17.0
			16.5
			16.0
			−50			− 25				0				25							50					75						100 125													150

Temperature (_C)

Overshoot (%)

SMALL−SIGNAL OVERSHOOT vs CAPACITIVE LOAD

50

40

30

20

10

0

1	10	100	1000
	Capacitance (pF)

7