Intersil Corporation HFA1212 Datasheet

HFA1212

September 1998 File Number 3607.4

Dual 350MHz, Low Power Closed Loop Buffer Ampliﬁer

The HFA1212 is a dual closed loop Buffer featuring user programmable gain and high speed performance. Manufactured on Intersil’s proprietary complementary bipolar UHF-1 process, these devices offer wide -3dB bandwidth of 350MHz, very fast slew rate, excellent gain ﬂatness and high output current.

A unique feature of the pinout allows the user to select a voltage gain of +1, -1, or +2, without the use of any external components. Gain selection is accomplished via connections to the inputs, as described in the “Application Information” section. The result is a more ﬂexible product, fewerpart types in inventory, and more efﬁcient use of board space.

Compatibility with existing op amp pinouts provides ﬂexibility to upgrade low gain ampliﬁers, while decreasing component count. Unlike most buffers, the standard pinout provides an upgrade path should a higher closed loop gain be needed at a future date. For Military product, refer to the HFA1212/883 data sheet.

Ordering Information

PART NUMBER

(BRAND)

HFA1212IP -40 to 85 8 Ld PDIP E8.3 HFA1212IB

(H1212I)

TEMP.

RANGE (oC) PACKAGE

-40 to 85 8 Ld SOIC M8.15

PKG.

NO.

Features

• Differential Gain . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025%

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

• Wide -3dB Bandwidth (A

• Very Fast Slew Rate (A

= +2). . . . . . . . . . . . . .350MHz

= -1) . . . . . . . . . . . . . . 1100V/µs

• Low Supply Current . . . . . . . . . . . . . . . . . . . . 6mA/Buffer

• High Output Current. . . . . . . . . . . . . . . . . . . . . . . . .60mA

• Excellent Gain Accuracy . . . . . . . . . . . . . . . . . . . 0.99V/V

• User Programmable For Closed-Loop Gains of +1, -1 or +2 Without Use of External Resistors

• Overdrive Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . 8ns

• Standard Operational Ampliﬁer Pinout

Applications

• High Resolution Monitors

• Professional Video Processing

• Medical Imaging

• Video Digitizing Boards/Systems

• RF/IF Processors

• Battery Powered Communications

• Flash Converter Drivers

• High Speed Pulse Ampliﬁers

Pinout

HFA1212

(PDIP, SOIC)

TOP VIEW

OUT1

1 2

-IN1 3

+IN1

V-

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

V+

OUT2

-IN2

+IN2

HFA1212

Absolute Maximum Rating Thermal Information

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

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

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

ESD Rating

Human Body Model (Per MIL-STD-883 Method 3015.7). . . .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 protected for short circuits to ground. Brief short circuits to ground will not degrade reliability, however, continuous (100% duty cycle) output current should 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

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

INPUT CHARACTERISTICS

Output Offset Voltage A 25 - 2 10 mV

Average Output Offset Voltage Drift B Full - 22 70 µV/oC Channel-to-Channel Output Offset

Voltage Mismatch

Common-Mode Rejection Ratio ∆VCM = ±1.8V A 25 42 45 - dB

Power Supply Rejection Ratio ∆VPS = ±1.8V A 25 45 49 - dB

Input Bias Current A 25 - 1 15 µA

Input Bias Current Drift B Full - 30 80 nA/oC Channel-to-Channel Input Bias Current

Mismatch

Input Bias Current Power Supply Sensitivity ∆VPS = ±1.25V A 25 - 0.5 1 µA/V

Input Resistance ∆VCM = ±1.8V A 25 0.8 1.1 - MΩ

Inverting Input Resistance C 25 - 350 - Ω Input Capacitance C 25 - 2 - pF Input Voltage Common Mode Range

(Implied by VIO CMRR and +RIN tests)

Input Noise Voltage Density (Note 4) f = 100kHz B 25 - 7 - nV/√Hz Input Noise Current Density (Note 4) f = 100kHz B 25 - 3.6 - pA/√Hz

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

SUPPLY

(NOTE 3)

TEST

CONDITIONS

∆VCM = ±1.8V A 85 40 44 - dB ∆VCM = ±1.2V A -40 40 45 - dB

∆VPS = ±1.8V A 85 43 48 - dB ∆VPS = ±1.2V A -40 43 48 - dB

∆VCM = ±1.8V A 85 0.5 1.4 - MΩ ∆VCM = ±1.2V A -40 0.5 1.3 - MΩ

TEST

LEVEL

A Full - 3 15 mV

A 25 - - 15 mV A Full - - 30 mV

A Full - 3 25 µA

A 25 - - 15 µA A Full - - 25 µA

A Full - - 3 µA/V

A 25, 85 ±1.8 ±2.4 - V A -40 ±1.2 ±1.7 - V

TEMP

(oC) MIN TYP MAX UNITS

HFA1212

Electrical Speciﬁcations V

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

SUPPLY

(NOTE 3)

PARAMETER

TEST

CONDITIONS

TEST

LEVEL

TEMP

(oC) MIN TYP MAX UNITS

TRANSFER CHARACTERISTICS

Gain (VIN = -1V to +1V) AV = -1 A 25 -0.98 0.996 -1.02 V/V

A Full 0.975 1.000 -1.025 V/V

AV = +1 A 25 0.98 0.992 1.02 V/V

A Full 0.975 0.993 1.025 V/V

AV = +2 A 25 1.96 1.988 2.04 V/V

A Full 1.95 1.990 2.05 V/V

Channel-to-Channel Gain Mismatch AV = -1 A 25 - - ±0.02 V/V

A Full - - ±0.025 V/V

AV = +1 A 25 - - ±0.025 V/V

A Full - - ±0.025 V/V

AV = +2 A 25 - - ±0.04 V/V

A Full - - ±0.05 V/V

AC CHARACTERISTICS

-3dB Bandwidth (V

= 0.2V

OUT

P-P

, Note 4)

AV = -1 B 25 - 300 - MHz AV= +1, +RS= 620Ω B 25 - 240 - MHz AV = +2 B 25 - 350 - MHz

Full Power Bandwidth (V V

OUT

= 5V

= 4V

at AV = +2 or -1,

P-P

at AV = +1, Note 4)

P-P

AV = -1 B 25 - 165 - MHz AV = +1, +RS= 620Ω B 25 - 150 - MHz AV = +2 B 25 - 125 - MHz

Gain Flatness (V

OUT

= 0.2V

P-P

, Note 4)

Crosstalk (All Channels Hostile, Note 4)

AV = +2, To 25MHz B 25 - ±0.03 - dB AV = +2, To 50MHz B 25 - ±0.04 - dB 5MHz B 25 - -65 - dB 10MHz B 25 - -60 - dB

OUTPUT CHARACTERISTICS

Output Voltage Swing (Note 4)

Output Current (Note 4)

AV = -1 A 25 ±3.0 ±3.2 - V

A Full ±2.8 ±3.0 - V

AV = -1, RL = 50Ω A 25, 85 50 55 - mA

A -40 28 42 - mA Output Short Circuit Current B 25 - 100 - mA DC Closed Loop Output Impedance AV= +2 B 25 - 0.2 - Ω Second Harmonic Distortion

(AV= +2, V

OUT

=2V

P-P

, Note 4)

Third Harmonic Distortion (AV= +2, V

OUT

=2V

P-P

, Note 4)

10MHz B 25 - -60 - dBc 20MHz B 25 - -50 - dBc 10MHz B 25 - -60 - dBc

20MHz B 25 - -50 - dBc Reverse Isolation (S12, Note 4) 30MHz, AV= +2 B 25 - -65 - dB TRANSIENT RESPONSE AV= +2, Unless Otherwise Speciﬁed Rise and Fall Times

OUT

= 0.5V

P-P

)

Rise Time B 25 - 1.0 - ns

Fall Time B 25 - 1.1 - ns

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