Intersil Corporation HFA1105 Datasheet

HFA1105

September 1998 File Number 3395.6

330MHz, Low Power, Current Feedback
Video Operational Amplifier

The HFA1105 is a high speed, low power current feedback
amplifier built with Intersil’s proprietary complementary
bipolar UHF-1 process.

This amplifier features an excellent combination of low
power dissipation (58mW) and high performance. The slew
rate, bandwidth, and low output impedance (0.08Ω) make
this amplifier a good choice for driving Flash ADCs.
Component and composite video systems also benefit from
this op amp’s excellent gain flatness, and good differential
gain and phase specifications. The HFA1105 is ideal for
interfacing to Intersil’s line of video crosspoint switches
(HA4201, HA4600, HA4314, HA4404, HA4344), to create
high performance, low power switchers and routers.

The HFA1105 is a low power, high performance upgrade for
the CLC406. For a comparable amplifier with output disable
or output limiting functions, please see the data sheets for
the HFA1145 and HFA1135 respectively.

For Military grade product, please refer to the HFA1145/883
data sheet.

Ordering Information

PART NUMBER

(BRAND)

HFA1105IP -40 to 85 8 Ld PDIP E8.3
HFA1105IB

(H1105I)
HFA11XXEVAL DIP Evaluation Board for High Speed

TEMP.

RANGE (oC) PACKAGE PKG. NO.

-40 to 85 8 Ld SOIC M8.15

Op Amps

Features

• Low Supply Current . . . . . . . . . . . . . . . . . . . . . . . . 5.8mA

• High Input Impedance . . . . . . . . . . . . . . . . . . . . . . . 1MΩ

• Wide -3dB Bandwidth. . . . . . . . . . . . . . . . . . . . . . 330MHz

• Very Fast Slew Rate. . . . . . . . . . . . . . . . . . . . . . 1000V/µs

• Gain Flatness (to 75MHz) . . . . . . . . . . . . . . . . . . . . 0.1dB

• Differential Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.02%

• Differential Phase. . . . . . . . . . . . . . . . . . . . 0.03 Degrees

• Pin Compatible Upgrade for CLC406

Applications

• Flash A/D Drivers

• Video Switching and Routing

• Professional Video Processing

• Video Digitizing Boards/Systems

• Multimedia Systems

• RGB Preamps

• Medical Imaging

• Hand Held and Miniaturized RF Equipment

• Battery Powered Communications

Pinout

HFA1105

(PDIP, SOIC)

TOP VIEW

NC

-IN

+IN

1
2

-

+

3
4

V-

8

NC

7

V+

6

OUT

5

NC

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999

HFA1105

Absolute Maximum Ratings Thermal Information

Supply Voltage (V+ to V-). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11V

DC Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V

Output Current (Note 1). . . . . . . . . . . . . . . . .Short Circuit Protected

30mA Continuous

60mA ≤ 50% Duty Cycle

ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >600V

SUPPLY

Operating Conditions

Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operationofthe
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

1. Output is short circuit protected to ground. Brief short circuits to ground will not degrade reliability, however continuous (100% duty cycle) output
current must not exceed 30mA for maximum reliability.

2. θJA is measured with the component mounted on an evaluation PC board in free air.

Thermal Resistance (Typical, Note 2) θJA (oC/W)

PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Maximum Junction Temperature (Die) . . . . . . . . . . . . . . . . . . . .175oC

Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC

Maximum Storage Temperature Range. . . . . . . . . . -65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC

(SOIC - Lead Tips Only)

Electrical Specifications V

PARAMETER TEST CONDITIONS

INPUT CHARACTERISTICS

Input Offset Voltage A 25 - 2 5 mV

Average Input Offset Voltage Drift B Full - 1 10 µV/oC
Input Offset Voltage

Common-Mode Rejection Ratio

Input Offset Voltage
Power Supply Rejection Ratio

Non-Inverting Input Bias Current A 25 - 6 15 µA

Non-Inverting Input Bias Current Drift B Full - 5 60 nA/oC
Non-Inverting Input Bias Current

Power Supply Sensitivity

Non-Inverting Input Resistance ∆VCM = ±1.8V A 25 0.8 1.2 - MΩ

Inverting Input Bias Current A 25 - 2 7.5 µA

Inverting Input Bias Current Drift B Full - 60 200 nA/oC
Inverting Input Bias Current

Common-Mode Sensitivity

Inverting Input Bias Current
Power Supply Sensitivity

= ±5V, AV = +1, RF = 510Ω, RL = 100Ω, Unless Otherwise Specified

SUPPLY

(NOTE 3)

TEST

LEVEL

A Full - 3 8 mV

∆VCM = ±1.8V A 25 47 50 - dB
∆VCM = ±1.8V A 85 45 48 - dB
∆VCM = ±1.2V A -40 45 48 - dB
∆VPS = ±1.8V A 25 50 54 - dB
∆VPS = ±1.8V A 85 47 50 - dB
∆VPS = ±1.2V A -40 47 50 - dB

A Full - 10 25 µA

∆VPS = ±1.8V A 25 - 0.5 1 µA/V
∆VPS = ±1.8V A 85 - 0.8 3 µA/V
∆VPS = ±1.2V A -40 - 0.8 3 µA/V

∆VCM = ±1.8V A 85 0.5 0.8 - MΩ
∆VCM = ±1.2V A -40 0.5 0.8 - MΩ

A Full - 5 15 µA

∆VCM = ±1.8V A 25 - 3 6 µA/V
∆VCM = ±1.8V A 85 - 4 8 µA/V
∆VCM = ±1.2V A -40 - 4 8 µA/V
∆VPS = ±1.8V A 25 - 2 5 µA/V
∆VPS = ±1.8V A 85 - 4 8 µA/V
∆VPS = ±1.2V A -40 - 4 8 µA/V

TEMP.

(oC) MIN TYP MAX UNITS

2

HFA1105

Electrical Specifications V

PARAMETER TEST CONDITIONS

= ±5V, AV = +1, RF = 510Ω, RL = 100Ω, Unless Otherwise Specified (Continued)

SUPPLY

(NOTE 3)

TEST

LEVEL

TEMP.

(oC) MIN TYP MAX UNITS

Inverting Input Resistance C 25 - 60 - Ω
Input Capacitance C 25 - 1.6 - pF
Input Voltage Common Mode Range

(Implied by VIO CMRR, +RIN, and -I

CMS Tests)

BIAS

A 25, 85 ±1.8 ±2.4 - V

A -40 ±1.2 ±1.7 - V
Input Noise Voltage Density (Note 6) f = 100kHz B 25 - 3.5 - nV/√Hz
Non-Inverting Input Noise Current Density (Note 6) f = 100kHz B 25 - 2.5 - pA/√Hz
Inverting Input Noise Current Density (Note 6) f = 100kHz B 25 - 20 - pA/√Hz

TRANSFER CHARACTERISTICS

Open Loop Transimpedance Gain AV = -1 C 25 - 500 - kΩ
AC CHARACTERISTICS RF = 510Ω, Unless Otherwise Specified

-3dB Bandwidth
(V

= 0.2V

OUT

P-P

, Note 6)

AV = +1, +RS = 510Ω B 25 - 270 - MHz

B Full - 240 - MHz

AV = -1, RF = 425Ω B 25 - 300 - MHz
AV = +2 B 25 - 330 - MHz

B Full - 260 - MHz

AV = +10, RF = 180Ω B 25 - 130 - MHz

B Full - 90 - MHz
Full Power Bandwidth

(V
4V

OUT

P-P

= 5V

at AV = +2/-1,

P-P

at AV = +1, Note 6)

Gain Flatness
(AV = +2, V

OUT

= 0.2V

P-P

, Note 6)

AV = +1, +RS = 510Ω B 25 - 135 - MHz
AV = -1 B 25 - 140 - MHz
AV = +2 B 25 - 115 - MHz
To 25MHz B 25 - ±0.03 - dB

B Full - ±0.04 - dB

To 75MHz B 25 - ±0.11 - dB

B Full - ±0.22 - dB
Gain Flatness

(AV = +1, +RS = 510Ω, V

OUT

= 0.2V

P-P

, Note 6)

To 25MHz B 25 - ±0.03 - dB

To 75MHz B 25 - ±0.09 - dB
Minimum Stable gain A Full - 1 - V/V
OUTPUT CHARACTERISTICS AV = +2, RF = 510Ω, Unless Otherwise Specified
Output Voltage Swing (Note 6) AV = -1, RL = 100Ω A25±3 ±3.4 - V

A Full ±2.8 ±3- V

Output Current (Note 6) AV = -1, RL = 50Ω A 25, 85 50 60 - mA

A -40 28 42 - mA
Output Short Circuit Current B 25 - 90 - mA
Closed Loop Output Impedance (Note 6) DC B 25 - 0.08 - Ω
Second Harmonic Distortion

(V

OUT

= 2V

P-P

, Note 6)

Third Harmonic Distortion
(V

OUT

= 2V

P-P

, Note 6)

10MHz B 25 - -48 - dBc
20MHz B 25 - -44 - dBc
10MHz B 25 - -50 - dBc

20MHz B 25 - -45 - dBc
Reverse Isolation (S12, Note 6) 30MHz B 25 - -55 - dB
TRANSIENT CHARACTERISTICS AV = +2, RF = 510Ω, Unless Otherwise Specified
Rise and Fall Times V

OUT

= 0.5V

P-P

B 25 - 1.1 - ns
B Full - 1.4 - ns

3

HFA1105

Electrical Specifications V

PARAMETER TEST CONDITIONS

Overshoot (Note 4)
(V

= 0 to 0.5V, VIN t

OUT

Overshoot (Note 4)
(V

= 0.5V

OUT

Slew Rate
(V

= 4V

OUT

Slew Rate
(V

= 5V

OUT

Slew Rate
(V

= 5V

OUT

Settling Time
(V

= +2V to 0V step, Note 6)

OUT

Overdrive Recovery Time VIN = ±2V B 25 - 8.5 - ns
VIDEO CHARACTERISTICS AV = +2, RF = 510Ω, Unless Otherwise Specified
Differential Gain

(f = 3.58MHz)
Differential Phase

(f = 3.58MHz)

POWER SUPPLY CHARACTERISTICS

Power Supply Range C 25 ±4.5 - ±5.5 V
Power Supply Current (Note 6) A 25 - 5.8 6.1 mA

NOTES:

3. Test Level: A. Production Tested; B. Typical or Guaranteed Limit Based on Characterization; C. Design Typical for Information Only.

4. Undershoot dominates for output signal swings below GND (e.g., 0.5V
condition. See the “Application Information” section for details.

5. Slew rates are asymmetrical if the output swings belowGND(e.g.abipolarsignal). Positive unipolar output signals have symmetric positive and
negative slew rates comparable to the +SR specification. See the “Application Information” section, and the pulse response graphs for details.

6. See Typical Performance Curves for more information.

, VIN t

P-P

, AV = +1, +RS = 510Ω)

P-P

, AV = +2)

P-P

, AV = -1)

P-P

RISE

RISE

= 1ns)

= 1ns)

= ±5V, AV = +1, RF = 510Ω, RL = 100Ω, Unless Otherwise Specified (Continued)

SUPPLY

(NOTE 3)

TEST

LEVEL

+OS B 25 - 3 - %

-OS B 25 - 5 - %
+OS B 25 - 3 - %

-OS B 25 - 11 - %
+SR B 25 - 1000 - V/µs

B Full - 975 - V/µs

-SR (Note 5) B 25 - 650 - V/µs
B Full - 580 - V/µs

+SR B 25 - 1400 - V/µs

B Full - 1200 - V/µs

-SR (Note 5) B 25 - 800 - V/µs
B Full - 700 - V/µs

+SR B 25 - 2100 - V/µs

B Full - 1900 - V/µs

-SR (Note 5) B 25 - 1000 - V/µs
B Full - 900 - V/µs

To 0.1% B 25 - 15 - ns
To 0.05% B 25 - 23 - ns
To 0.02% B 25 - 30 - ns

RL = 150Ω B 25 - 0.02 - %
RL = 75Ω B 25 - 0.03 - %
RL = 150Ω B 25 - 0.03 - Degrees
RL = 75Ω B 25 - 0.05 - Degrees

A Full - 5.9 6.3 mA

), yielding a higher overshoot limit compared to the V

P-P

TEMP.

(oC) MIN TYP MAX UNITS

OUT

= 0 to 0.5V

Application Information

Optimum Feedback Resistor

Although a current feedback amplifier’s bandwidth
dependency on closed loop gain isn’t as severe as that of a
voltage feedback amplifier, there can be an appreciable
decrease in bandwidth at higher gains. This decrease may
be minimized by taking advantage of the current feedback

4

amplifier’s unique relationship between bandwidth and R

.

F

All current feedback amplifiers require a feedback resistor,
even for unity gain applications, and R

, in conjunction with

F

the internal compensation capacitor, sets the dominant pole
of the frequency response. Thus, the amplifier’s bandwidth is
inversely proportional to R
optimized for R

= 510Ω at a gain of +2. Decreasing R

F

. The HFA1105 design is

F

F

decreases stability, resulting in excessive peaking and