Burr Brown OPA4650U-2K5, OPA4650U, OPA4650P Datasheet

© 1994 Burr-Brown Corporation PDS-1267B Printed in U.S.A. July, 1995

FEATURES

● LOW POWER: 50mW/channel

● UNITY GAIN STABLE BANDWIDTH:

360MHz

● FAST SETTLING TIME: 20ns to 0.01%

● LOW INPUT BIAS CURRENT: 5

µA

● DIFFERENTIAL GAIN/PHASE ERROR:

0.01%/0.025

°

● 14-PIN DIP and SO-14 SURFACE MOUNT

PACKAGES AVAILABLE

DESCRIPTION

The OPA4650 is a quad, low power, wideband voltage
feedback operational amplifier. It features a high band­width of 360MHz as well as a 12-bit settling time of
only 20ns. The low input bias current allows its use in
high speed integrator applications, while the wide
bandwidth and true differential input stage make it
suitable for use in a variety of active filter applica­tions. Its low distortion gives exceptional performance
for telecommunications, medical imaging and video
applications.

The OPA4650 is internally compensated for unity­gain stability. This amplifier has a fully symmetrical
differential input due to its “classical” operational
amplifier circuit architecture. Its unusual combination
of speed, accuracy and low power make it an outstand­ing choice for many portable, multi-channel and other
high speed applications, where power is at a premium.

The OPA4650 is also available in single (OPA650)
and dual (OPA2650) configurations.

Wideband, Low Power, Quad Voltage Feedback

OPERATIONAL AMPLIFIER

®

OPA4650

Current

Mirror

Output

Stage

C

C

Inverting

Input

Non-Inverting

Input

+V

S

Output

–V

S

Simplified Schematic

1 of 4 Channels

APPLICATIONS

● HIGH RESOLUTION VIDEO

● MONITOR PREAMPLIFIER

● CCD IMAGING AMPLIFIER

● ULTRASOUND SIGNAL PROCESSING

● ADC/DAC BUFFER AMPLIFIER

● ACTIVE FILTERS

● HIGH SPEED INTEGRATORS

● DIFFERENTIAL AMPLIFIER

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]

OPA4650

OPA4650

DEMO BOARD

AVAILABLE

2

®

OPA4650

SPECIFICATIONS

At TA = +25°C, VS = ±5V, RL = 100Ω, and RFB = 402Ω, unless otherwise noted. RFB = 25Ω for a gain of +1.

OPA4650P, U
PARAMETER CONDITIONS MIN TYP MAX UNITS
FREQUENCY RESPONSE

Closed-Loop Bandwidth

(1)

G = +1 360 MHz
G = +2 120 MHz
G = +5 35 MHz

G = +10 16 MHz
Gain Bandwidth Product 160 MHz
Slew Rate

(2)

G = +1, 2V Step 240 V/µs

Over Specified Temperature 220 V/µs
Rise Time 0.2V Step 1 ns
Fall Time 0.2V Step 1 ns
Settling Time 0.01% G = +1, 2V Step 20 ns

0.1% G = +1, 2V Step 10.3 ns
1% G = +1, 2V Step 7.9 ns

Spurious Free Dynamic Range G = +1, f = 5.0 MHz, V

O

= 2Vp-p

R

L

= 100Ω 68 dBc

R

L

= 402Ω 74 dBc

Differential Gain G = +2, NTSC, V

O

= 1.4Vp, RL = 150Ω 0.01 %

Differential Phase G = +2, NTSC, V

O

= 1.4Vp, RL = 150Ω 0.025 Degrees

Bandwidth for 0.1dB Flatness G = +2 21 MHz
Crosstalk Input Referred, 5MHz, all hostile –63 dB

Input Referred, 5MHz, Channel-to-Channel –66 dB

OFFSET VOLTAGE

Input Offset Voltage ±1 ±5.5 mV

Average Drift ±3 µV/°C
Power Supply Rejection (+V

S

)|V

S

| = 4.5V to 5.5V 60 76 dB

(–V

S

) 47 52 dB

INPUT BIAS CURRENT

Input Bias Current V

CM

= 0V 5 20 µA

Over Temperature 30 µA
Input Offset Current V

CM

= 0V 0.5 1.0 µA

Over Temperature 3.0 µA

INPUT NOISE

Input Voltage Noise

Noise Density, f = 100Hz 43 nV/√Hz

f = 10kHz 9.4 nV/√Hz
f = 1MHz 8.4 nV/√Hz
f = 1MHz to 100MHz 8.4 nV/√Hz

Integrated Noise, BW = 10Hz to 100MHz 84 µVp-p
Input Bias Current Noise

Current Noise Density, f = 0.1MHz to 100MHz 1.2 pA/√Hz
Noise Figure (NF)

R

S

= 10kΩ 4.0 dBm

R

S

= 50Ω 19.5 dBm

INPUT VOLTAGE RANGE

Common-Mode Input Range ±2.8 V

Over Specified Temperature ±2.2 V
Common-Mode Rejection V

CM

= ±0.5V 65 90 dB

INPUT IMPEDANCE

Differential 15 || 1 kΩ || pF
Common-Mode 16 || 1 MΩ || pF

OPEN-LOOP GAIN

Open-Loop Voltage Gain V

O

= ±2V, RL = 100Ω 45 51 dB

Over Specified Temperature V

O

= ±2V, RL = 100Ω 43 dB

OUTPUT

Voltage Output

Over Specified Temperature No Load ±2.2 ±3.0 V

R

L

= 250Ω±2.2 ±2.5 V

R

L

= 100Ω±2.0 ±2.3 V

Output Current, Sourcing 75 110 mA

Over Temperature Range 65 mA
Output Current, Sinking 65 85 mA

Over Temperature Range 35 mA
Short-Circuit Current 150 mA
Output Resistance 0.1MHz, G = +1 0.08 Ω

POWER SUPPLY

Specified Operating Voltage ±5V
Operating Voltage Range ±4.5 ±5.5 V
Quiescent Current All Channels ±23 ±32 mA

Over Specified Temperature ±35 mA

TEMPERATURE RANGE

Specification: P, U –40 +85 °C
Thermal Resistance,

θ

JA

P 75 °C/W
U 75 °C/W

NOTES: (1) Frequency response can be strongly influenced by PC board parasites. The OPA4650 is nominally compensated assuming 2pF parasitic load. The
demonstration board, DEM-OPA465xP, shows a low parasitic layout for this part. (2) Slew rate is rate of change from 10% to 90% of output voltage step.

3

®

OPA4650

ORDERING INFORMATION

PRODUCT PACKAGE TEMPERATURE RANGE

OPA4650U SO-14 Surface Mount –40°C to +85°C
OPA4650P 14-Pin Plastic DIP –40°C to +85°C

PACKAGE INFORMATION

PACKAGE DRAWING

PRODUCT PACKAGE NUMBER

(1)

OPA4650U SO-14 Surface Mount 235
OPA4650P 14-Pin Plastic DIP 010

NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.

Total Supply Voltage Across Device................................................... 11V

Internal Power Dissipation ........................... See Thermal Considerations

Differential Input Voltage .................................................................. ±2.7V

Common-Mode Input Voltage Range .................................................. ±V

S

Storage Temperature Range: P, U, .............................. –40°C to +125°C

Lead Temperature (soldering, 10s) .............................................. +300°C

(soldering, SOIC 3s) ....................................... +260°C

Junction Temperature (T

J

) ............................................................ +175°C

ABSOLUTE MAXIMUM RATINGS

ELECTROSTATIC
DISCHARGE SENSITIVITY

Electrostatic discharge can cause damage ranging from per­formance degradation to complete device failure. Burr-Brown
Corporation recommends that all integrated circuits be handled
and stored using appropriate ESD protection methods.

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 published speci­fications.

Top View DIP/SO-14

PIN CONFIGURATION

1
2
3
4
5
6
7

14
13
12
11
10

9
8

Output 4
–Input 4
+Input 4
–V

S

+Input 3
–Input 3
Output 3

Output 1

–Input 1
+Input 1

+V

S

+Input 2
–Input 2

Output 2

4

®

OPA4650

TYPICAL PERFORMANCE CURVES

At TA = +25°C, VS = ±5V, RL = 100Ω, and RFB = 402Ω, unless otherwise noted. RFB = 25Ω for a gain of +1.

AOL, PSR AND CMRR vs TEMPERATURE

110

100

90

80

70

60

50

–50 –25 0 25 50 75 125

A

OL

, PSR and CMRR (dB)

Temperature (°C)

A

OL

PSR–

CMRR

PSR+

COMMON-MODE REJECTION

vs INPUT COMMON-MODE VOLTAGE

100

90

80

70

60

–4 –3 –2 –1 0 1 2 3 4

Common-Mode Rejection (dB)

Common-Mode Voltage (V)

INPUT BIAS CURRENT AND OFFSET VOLTAGE

vs TEMPERATURE

7

6

5

4

2

1

0

–1

–50 –25 0 25 50 75 100

Input Bias Current (mA)

Offset Voltage (mV)

Temperature (°C)

V

OS

I

B

SUPPLY CURRENT vs TEMPERATURE

26

24

22

20

–50 –25 0 25 50 75 100

Supply Current (±mA)

Temperature (°C)

I

Q

INPUT VOLTAGE AND CURRENT NOISE

vs FREQUENCY

Frequency (Hz)

100 1k 10k 100k 1M

100

10

1

Input Current Noise (pA/√Hz)

Input Voltage Noise (nV/√Hz)

Non-inverting and

Inverting Current Noise

Voltage Noise

OUTPUT CURRENT vs TEMPERATURE

70

65

60

55

–50 –25 0 25 50 75 100

Output Current (±mA)

Temperature (°C)

I

O

+

I

O

–