OPA350 series rail-to-rail CMOS operational amplifiers are optimized for low voltage, single-supply operation. Rail-to-rail input/output, low noise (5nV/√Hz),
and high speed operation (38MHz, 22V/µs) make them
ideal for driving sampling analog-to-digital converters.
They are also well suited for cell phone PA control
loops and video processing (75Ω drive capability) as
well as audio and general purpose applications. Single,
dual, and quad versions have identical specifications
for maximum design flexibility.
The OPA350 series operates on a single supply as low as
2.5V with an input common-mode voltage range that
OPA350
NC
1
–In
2
+In
3
V–
4
8-Pin DIP, SO-8, MSOP-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
extends 300mV below ground and 300mV above the
positive supply. Output voltage swing is to within 10mV
of the supply rails with a 10kΩ load. Dual and quad
designs feature completely independent circuitry for lowest crosstalk and freedom from interaction.
The single (OPA350) and dual (OPA2350) come in
the miniature MSOP-8 surface mount, SO-8 surface
mount, and 8-pin DIP packages. The quad (OPA4350)
packages are the space-saving SSOP-16 surface mount
and SO-14 surface mount. All are specified from
–40°C to +85°C and operate from –55°C to +125°C.
SPICE Model available at www.burr-brown.com
OPA4350
Out D
14
–In D
AD
BC
SO-14
13
+In D
12
V–
11
+In C
10
–In C
9
Out C
8
SPECIFICATIONS: VS = 2.7V to 5.5V
At TA = +25°C, RL = 1kΩ connected to VS/ 2 and V
Boldface limits apply over the specified temperature range, T
PARAMETERCONDITIONMINTYP
OFFSET VOLTAGE
Input Offset VoltageV
= –40°C to +85°C±1mV
T
A
vs TemperatureT
vs Power Supply Rejection RatioPSRRV
= –40°C to +85°CV
T
A
Channel Separation (dual, quad)dc0.15µV/V
INPUT BIAS CURRENT
Input Bias CurrentI
vs TemperatureSee Typical Performance Curve
Input Offset CurrentI
NOISE
Input Voltage Noise, f = 100Hz to 400kHz4µVrms
Input Voltage Noise Density, f = 10kHze
f = 100kHz5nV/√Hz
Current Noise Density, f = 10kHzi
INPUT VOLTAGE RANGE
Common-Mode Voltage RangeV
Common-Mode Rejection RatioCMRRV
NOTES: (1) V
the output and power supply rails. (5) See typical performance curve, “Output Voltage Swing vs Output Current.”
= +5V. (2) V
S
= 0.25V to 2.75V. (3) NTSC signal generator used. See Figure 6 for test circuit. (4) Output voltage swings are measured between
OUT
= VS/2, unless otherwise noted.
OUT
= –40°C to +85°C. VS = 5V.
A
OPA350EA, UA, PA
OPA2350EA, UA, PA
OPA4350EA, UA
(1)
OS
B
OS
n
n
CM
OL
S
V
S
S
RL = 10kΩ, 50mV < VO < (V+) –50mV100122dB
= 10kΩ, 50mV < VO < (V+) –50mV100dB
L
= 1kΩ, 200mV < VO < (V+) –200mV100120dB
R
L
= 1kΩ, 200mV < VO < (V+) –200mV100dB
L
RL = 600Ω, VO = 2.5Vp-p
VS = 5V±150±500µV
= –40°C to +85°C±4µV/°C
A
= 2.7V to 5.5V, VCM = 0V40150µV/V
S
= 2.7V to 5.5V, VCM = 0V175µV/V
S
±0.5±10pA
±0.5±10pA
7nV/√Hz
4fA/√Hz
TA = –40°C to +85°C–0.1(V+)+0.1V
= 2.7V, –0.1V < V
= 5.5V, –0.1V < V
= 5.5V, –0.1V < V
= 100pF
L
• G = V
IN
= 600Ω, VO = 1.4V
L
= 600Ω, VO = 1.4V
L
< 2.8V6684dB
CM
< 5.6V7690dB
CM
< 5.6V74dB
CM
13
|| 2.5Ω || pF
13
|| 6.5Ω || pF
S
(2)
, G = 1, f = 1kHz
(3)
(3)
0.1µs
0.0006%
0.17%
0.17deg
MAXUNITS
RL = 10kΩ, AOL ≥ 100dB1050mV
= 10kΩ, AOL ≥ 100dB50mV
L
= 1kΩ, AOL ≥ 100dB25200mV
R
L
= 1kΩ, A
L
SC
S
Q
θ
JA
TA = –40°C to +85°C2.75.5V
≥ 100dB200mV
OL
±40
(5)
±80mA
See Typical Curve
IO = 05.27.5mA
mA
®
OPA350, 2350, 4350
2
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ................................................................................... 5.5V
Signal Input Terminals, Voltage
Output Short Circuit
Operating Temperature ..................................................–55 °C to +125°C
Storage Temperature ..................................................... –55°C to +125°C
Junction Temperature ...................................................................... 150°C
Lead Temperature (soldering, 10s) ................................................. 300°C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade device reliability. (2) Input terminals are diode-clamped to the power
supply rails. Input signals that can swing more than 0.3V 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. 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/ORDERING INFORMATION
PACKAGESPECIFIED
PRODUCTPACKAGENUMBER
DRAWINGTEMPERATUREPACKAGEORDERINGTRANSPORT
Single
OPA350EAMSOP-8 Surface Mount337–40°C to +85°CC50OPA350EA/250Tape and Reel
"""""OPA350EA/2K5Tape and Reel
OPA350UASO-8 Surface-Mount182–40°C to +85°COPA350UAOPA350UARails
"""""OPA350UA/2K5Tape and Reel
OPA350PA8-Pin DIP006–40°C to +85°COPA350PAOPA350PARails
Dual
OPA2350EAMSOP-8 Surface-Mount337–40°C to +85°CD50OPA2350EA/250Tape and Reel
"""""OPA2350EA/2K5Tape and Reel
OPA2350UASO-8 Surface-Mount182–40 °C to +85°COPA2350UAOPA2350UARails
"""""OPA2350UA/2K5Tape and Reel
OPA2350PA8-Pin DIP006–40°C to +85°COPA2350PAOPA2350PARails
Quad
OPA4350EASSOP-16 Surface-Mount322–40°C to +85°COPA4350EAOPA4350EA/250Tape and Reel
"""""OPA4350EA/2K5Tape and Reel
OPA4350UASO-14 Surface Mount235–40°C to +85°COPA4350UAOPA4350UARails
"""""OPA4350UA/2K5Tape and Reel
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are
available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “OPA2350EA/2K5” will get a single
2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
(1)
RANGEMARKINGNUMBER
(2)
MEDIA
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.
®
3
OPA350, 2350, 4350
TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = +5V, and RL = 1kΩ connected to VS/2, unless otherwise noted.
160
140
120
100
80
60
Voltage Gain (dB)
40
20
0
0.11
100k
10k
1k
100
Voltage Noise (nV√Hz)
10
1
101001k10k100k1M10M
OPEN-LOOP GAIN/PHASE vs FREQUENCY
φ
G
101001k10k100k1M10M 100M
Frequency (Hz)
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
Current Noise
Voltage Noise
Frequency (Hz)
10k
1k
100
10
1
0.1
0
–45
–90
–135
–180
Current Noise (fA√Hz)
100
90
80
70
60
50
Phase (°)
40
30
PSRR, CMRR (dB)
20
10
0
101001k10k100k1M10M
140
130
120
110
100
90
80
Channel Separation (dB)
70
60
POWER SUPPLY AND COMMON-MODE
REJECTION RATIO vs FREQUENCY
PSRR
CMRR
(V
= +5V
S
V
= –0.1V to 5.1V)
CM
Frequency (Hz)
CHANNEL SEPARATION vs FREQUENCY
Dual and quad devices.
100101k1M100k10k10M
Frequency (Hz)
TOTAL HARMONIC DISTORTION + NOISE
1
G = 100, 3Vp-p (VO = 1V to 4V)
0.1
G = 10, 3Vp-p (VO = 1V to 4V)
0.01
THD+N (%)
0.001
0.0001
G = 1, 3Vp-p (VO = 1V to 4V)
Input goes through transition region
G = 1, 2.5Vp-p (VO = 0.25V to 2.75V)
Input does NOT go through transition region
101001k10k100k
®
vs FREQUENCY
Frequency (Hz)
OPA350, 2350, 4350
RL = 600Ω
(–40dBc)
0.1
(–60dBc)
0.01
(–80dBc)
0.001
Harmonic Distortion (%)
(–100dBc)
0.0001
(–120dBc)
4
HARMONIC DISTORTION + NOISE vs FREQUENCY
1
G = 1
= 2.5Vp-p
V
O
= 600Ω
R
L
3rd Harmonic
1k10k100k1M
2nd Harmonic
Frequency (Hz)
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