ST RHF484 User Manual

RHF484

Rad-hard precision quad operational amplifier

Features

■ High radiation immunity: 300 kRad TID at high

dose rate

■ ELDRS-free up to 100 krad

■ 300 krad low dose rate on-going

■ SEL immune at LET = 120 MeV.cm²/mg at

125°C

■ SET characterized

■ Hermetic package

■ Rail-to-rail input/output

■ 8 MHz gain bandwidth product

■ Low input offset voltage: 60 µV typ

■ Supply current: 2.2 mA typ per amplifier

■ Operating from 4 to 14 V

■ Input bias current: 6 nA typ

■ QLM-V qualified under smd 5962-08222

Applications

■ Space probes and satellites

■ Harsh environment

Description

The RHF484 is a rail-to-rail precision bipolar quad
operational amplifier featuring a low input offset
voltage and a wide supply voltage.

Ceramic Flat-14W

Pin connections (top view)

The upper metallic lid is not electrically connected to

any pins, nor to the IC die inside the package

Designed to increase tolerance to radiation, the
RHF484 is housed in a hermetic 14-pin flat
package, making it an ideal product for space
applications and harsh environments.

Table 1. Device summary

Reference SMD pin Quality level Temp range Package

RHF484K1

RHF484K-01V 5962F08222 Flight model -

Engineering

model

-55°C to +125°C Flat-14 W Gold 0.70 g

Lead

finish

Mass EPPL

-

Note: Contact your ST sales office for information on specific conditions for products in die form.

April 2011 Doc ID 17351 Rev 1 1/18

www.st.com

18

Absolute maximum ratings and operating conditions RHF484

1 Absolute maximum ratings and operating conditions

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

V

V

V

I

T

T

R

R

ESD HBM: human body model

T

Lead

Supply voltage (+VCC)-(-VCC)18V

CC

Differential input voltage

id

Input voltage

in

Input current 45 mA

in

Storage temperature range -65 to +150 °C

stg

Maximum junction temperature 150 °C

j

Thermal resistance junction to ambient

thja

Flat package, 14 pins

Thermal resistance junction to case

thjc

Flat package, 14 pins

(2)(3)

(1)

(5)

(4)

(4)

±1.2 V

-V

-0.3V to

CC

+VCC +0.3V

V

TBD °C/W

TBD °C/W

2kV

Lead temperature (soldering, 10 sec) 260 °C

Radiation informations

Dose

Low dose rate of 0.01 rad.sec

High dose rate of 50-300 rad.sec

Heavy

ions

1. The differential voltage is the voltage difference between the pins +IN and -IN of a channel.

2. All voltage values, except differential voltage are with respect to network ground terminal.

3. The voltage on either input must never exceed +V

4. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.

5. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a

1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.

Table 3. Operating conditions

SEL immunity (at 125°C) 120 MeV.cm

SET characterized

-1

-1

CC

100 kRad

300 kRad

+0.3 V nor 16 V.

2

/mg

Symbol Parameter Value Unit

)-(-VCC) Supply voltage 4 to 14

(+V

CC

V

icm

T

oper

1. SEL-free, up to 120 MeV.cm²/mg.

Common-mode input voltage range -VCC to +V

Operating free-air temperature range -55 to +125 °C

2/18 Doc ID 17351 Rev 1

(1)

CC

V

V

RHF484 Electrical characteristics

2 Electrical characteristics

Table 4. +VCC = 7 V, -VCC = 7 V, V

= 0 V, T

icm

= 25°C, loads (RL,CL) connected to GND

amb

(unless otherwise specified)

Symbol Parameter Test conditions Temp. Min. Typ. Max. Unit

DC performance

-55°C 700

V

DV

DI

Vicm = +7 V

io

Offset voltage

Vicm = +0 V

Vicm = -7 V

Input offset voltage drift No load 1 µV/°C

io

I

Input bias current No load

ib

Input offset current temp. drift No load 100 pA/°C

ib

Input offset current

I

io

No load

=0 V

V

out

+25°C 500

+125°C 700

-55°C 500

+25°C 60 300

+125°C 500

-55°C 700

+25°C 500

+125°C 700

-55°C 100

+125°C 100

-55°C 35

+125°C 35

µV

nA+25°C 6 60

nA+25°C 2 15

Differential input capacitance
between +IN and -IN

C

in

Input capacitance between
+IN (or -IN) and GND

I

Supply current per amplifier No load

CC

CMR Common mode rejection ratio

SVR Supply rejection ratio

+25°C 8

+25°C 2

-55°C 2.9

+125°C 2.9

-55°C 72

No load

< Vicm < +V

-V

CC

CC

+125°C 72

No load
From +V

-V

= -2 V to +V

CC

V and -V

= 2 V and

CC

= -7 V

CC

CC

-55°C 80

= 7

+125°C 80

Doc ID 17351 Rev 1 3/18

pF

mA+25°C 2.2 2.9

dB+25°C 72 105

dB+25°C 90 120

Electrical characteristics RHF484

A

Table 4. +VCC = 7 V, -VCC = 7 V, V

= 0 V, T

icm

= 25°C, loads (RL,CL) connected to GND

amb

(unless otherwise specified) (continued)

Symbol Parameter Test conditions Temp. Min. Typ. Max. Unit

AC performance

GBP Gain bandwidth product

F

Unity gain frequency RL = 1 kΩ, CL = 100 pF +25°C 5 MHz

u

φm Phase margin

A

Large signal voltage gain

VD

SR Slew rate

e

Equivalent input noise voltage No load, f = 1kHz +25°C 7

n

Vout = 200 mVpp
f = 100 kHz

R

=1 kΩ,

L

= 100 pF

C

L

= 1 kΩ, CL = 100 pF

R

L

G = +5

R

= 10 kΩ

L

V

= -6.5 V to 6 V

out

= 1 kΩ

R

L

Vout = -4.8 V to 4.8 V
Vout = 4.8 V to -4.8 V

-55°C 3.5

+25°C 6 8

+125°C 3.5

+25°C 50 Degrees

-55°C 60

+125°C 60

-55°C 1.7

+125°C 1.7

MHz

dB+25°C 74 85

V/µs+25°C 2 3.5

nV

-----------­Hz

Equivalent input noise current No load, f = 1 kHz +25°C 0.8

i

n

THD+e

Total harmonic distortion +

n

noise

Output characteristics

V

V

High level output voltage

OH

Low level output voltage

OL

= 13 Vpp,

V

out

RL = 1 kΩ, CL = 100 pF
G = -5.1

=14 V, -VCC = 0 V

+V

CC

=1 kΩ

R

L

=14 V, -VCC = 0 V

+V

CC

= 10 kΩ

R

L

=14 V, -VCC = 0 V

+V

CC

=1 kΩ

R

L

=14 V, -VCC = 0 V

+V

CC

RL= 10 kΩ

+25°C 0.01 %

-55°C 13.5

+125°C 13.5

-55°C 13.6

+125°C 13.6

-55°C 0.3

+125°C 0.3

-55°C 0.2

+125°C 0.2

p

-----------­Hz

V+25°C 13.6 13.8

V+25°C 13.8 13.9

V+25°C 0.12 0.2

V+25°C 0.04 0.08

4/18 Doc ID 17351 Rev 1

RHF484 Electrical characteristics

Table 4. +VCC = 7 V, -VCC = 7 V, V

= 0 V, T

icm

= 25°C, loads (RL,CL) connected to GND

amb

(unless otherwise specified) (continued)

Symbol Parameter Test conditions Temp. Min. Typ. Max. Unit

-55°C 15

= +V

V

Output sink current

(1)

I

out

Output source current

1. These tests are performed during a very short period of time. Excessive heating can damage the device. In the application,

the junction temperature must never exceed 150°C as specified in Table 2.

out

No load, Vid = -1 V

V

out

No load, Vid = +1 V

= -V

CC

CC

mA+25°C 20 35

+125°C 15

-55°C 10

mA+25°C 15 30

+125°C 10

Doc ID 17351 Rev 1 5/18

Electrical characteristics RHF484

Table 5. +VCC = +2 V, -VCC = -2 V, V

= 0 V, T

icm

= 25°C, loads (RL,CL) connected to GND

amb

(unless otherwise specified)

Symbol Parameter Test conditions Temp. Min. Typ. Max. Unit

DC performance

-55°C 700

+25°C 500

+125°C 700

-55°C 500

+25°C 60 300

+125°C 500

-55°C 700

+25°C 500

+125°C 700

-55°C 100

+125°C 100

-55°C 35

+125°C 35

+25°C 8

+25°C 2

-55°C 2.6

DV

DI

Vicm = +2 V

V

io

Offset voltage

Vicm = +0 V

Vicm = -2 V

Input offset voltage drift No load 1 µV/°C

io

I

Input bias current No load

ib

Input offset current temp. drift No load 100 pA/°C

ib

Input offset current

I

io

No load
V

=0 V

out

Differential input capacitance
between +IN and -IN

C

in

Input capacitance between
+IN (or -IN) and GND

µV

nA+25°C 11 60

nA+25°C 2 15

pF

I

CMR Common mode rejection ratio

Supply current per amplifier No load

CC

No load

< Vicm < +V

-V

CC

CC

6/18 Doc ID 17351 Rev 1

mA+25°C 2 2.6

+125°C 2.6

-55°C 72

dB+25°C 72 95

+125°C 72