RHF330
Rad-hard 1 GHz low noise operational amplifier
Preliminary data
Features
■
■
■
■
■
■
■
■
■
■
■
Bandwidth: 1 GHz (gain = +2)
Slew rate: 1800 V/μs
Input noise: 1.3 nV/√ Hz
Distortion: SFDR = -78 dBc (10 MHz, 2 V
pp
)
100
Ω
load optimized output stage
5 V power supply
300 krad MIL-STD-883 1019.7 ELDRS free
compliant
SEL immune at 125° C, LET up to
110 MEV.cm
2
/mg
SET characterized, LET up to
110 MEV.cm
2
/mg
QMLV qualified under SMD 5962-0723101
Mass: 0.45 g
Pin connections
(top view)
1
NC
IN -
IN +
-VCC
4
8
NC
+VCC
OUT
NC
5
Description
The RHF330 is a current feedback operational
amplifier that uses very high-speed
complementary technology to provide a large
bandwidth of 1 GHz in gains of 2 while drawing
only 16.6 mA of quiescent current. The RHF330
also offers 0.1 dB gain flatness up to 160 MHz
with a gain of 2. With a slew rate of 1800 V/µs and
an output stage optimized for standard 100
Ω
loads, this device is highly suitable for
applications where speed and low distortion are
the main requirements. The device is a single
operator available in a Flat-8 hermetic ceramic
package, saving board space as well as providing
excellent thermal and dynamic performance.
Applications
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Communication satellites
Space data acquisition systems
Aerospace instrumentation
Nuclear and high energy physics
Harsh radiation environments
ADC drivers
Table 1.
Order code
RHF330K1
Device summary
SMD pin
-
Quality level
Engineering model
QMLV-Flight
Package Lead finish
Flat-8
Flat-8
Gold
Gold
Marking
RHF310K1
EPPL Packing
-
Strip pack
RHF330K-01V
5962F0723101VXC
5962F0723101VXC Target Strip pack
Note:
Contact your ST sales office for information on the specific conditions for products in die form and
QML-Q versions.
May 2010
Doc ID 15576 Rev 3
1/22
www.st.com
22
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
Contents
RHF330
Contents
1
2
3
4
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Demonstration board schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power supply considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1
Single power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
Noise measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1
5.2
5.3
Measurement of the input voltage noise eN . . . . . . . . . . . . . . . . . . . . . . . 15
Measurement of the negative input current noise iNn . . . . . . . . . . . . . . . 15
Measurement of the positive input current noise iNp . . . . . . . . . . . . . . . . 15
6
7
8
9
10
Intermodulation distortion product . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Bias of an inverting amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Active filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2/22
Doc ID 15576 Rev 3
RHF330
Absolute maximum ratings and operating conditions
1
Absolute maximum ratings and operating conditions
Table 2.
Symbol
V
CC
V
id
V
in
T
stg
T
j
R
thja
R
thjc
P
max
Supply voltage
(1)
Differential input voltage
(2)
Input voltage range
(3)
Storage temperature
Maximum junction temperature
Flat-8 thermal resistance junction to ambient
Flat-8 thermal resistance junction to case
Flat-8 maximum power dissipation
(4)
(T
amb
= + 25° C) for T
j
= 150° C
HBM: human body model
(5)
pins 1, 4, 5, 6, 7 and 8
pins 2 and 3
ESD
MM: machine model
(6)
pins 1, 4, 5, 6, 7 and 8
pins 2 and 3
CDM: charged device model
(7)
pins 1, 4, 5, 6, 7 and 8
pins 2 and 3
Latch-up immunity
1. All voltage values are measured with respect to the ground pin.
2. Differential voltage is the non-inverting input terminal with respect to the inverting input terminal.
3. The magnitude of input and output voltage must never exceed V
CC
+0.3 V.
4. Short-circuits can cause excessive heating. Destructive dissipation can result from short-circuits on all
amplifiers.
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.
6. This is a minimum value.
Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
7. Charged device model: all pins and package are charged together to the specified voltage and then
discharged directly to ground through only one pin.
Absolute maximum ratings
Parameter
Value
6
± 0.5
± 2.5
-65 to +150
150
50
30
830
Unit
V
V
V
°C
°C
°C/W
°C/W
mW
2
0.6
200
80
1.5
1
200
kV
V
kV
mA
Table 3.
Symbol
V
CC
V
icm
T
amb
Operating conditions
Parameter
Supply voltage
Common-mode input voltage
Operating free-air temperature range
(1)
Value
4.5 to 5.5
-V
CC
+1.5 to +V
CC
-1.5
-55 to +125
Unit
V
V
°C
1. Tj must never exceed +150°C. P = (Tj - Tamb)/Rthja = (Tj - Tcase)/Rthjc with P being the power that the
RHF330 must dissipate in the application.
Doc ID 15576 Rev 3
3/22
Electrical characteristics
RHF330
2
Table 4.
Symbol
Electrical characteristics
Electrical characteristics for V
CC
= ±2.5 V, T
amb
= +25° C
(unless otherwise specified)
Parameter
Test conditions
Temp.
Min.
Typ.
Max.
Unit
DC performance
+125°C
V
io
Input offset voltage
+25°C
-55°C
+125°C
I
ib+
Non-inverting input bias
current
+25°C
-55°C
+125°C
I
ib-
Inverting input bias current
+25°C
-55°C
+125°C
CMR
Common mode rejection ratio
20 log (ΔV
ic
/ΔV
io
)
ΔV
ic
= ±1 V
+25°C
-55°C
+125°C
SVR
Supply voltage rejection ratio
20 log (ΔV
CC
/ΔV
out
)
Power supply rejection ratio
20 log (ΔV
CC
/ΔV
out
)
ΔV
CC
= 3.5 V to 5 V
+25°C
-55°C
PSRR
ΔV
CC
= 200 mV
pp
at
1 kHz
+25°C
+125°C
I
CC
Supply current
No load
+25°C
-55°C
Dynamic performance and output characteristics
+125°C
R
OL
Transimpedance
ΔV
out
= ±1 V, R
L
= 100
Ω
+25°C
-55°C
V
out
= 20 mV
pp
R
L
= 100
Ω
A
V
= +2
,
-3 dB bandwidth
Bw
R
L
= 100
Ω
A
V
= -4
,
+25°C
+125°C
+25°C
-55°C
Gain flatness at 0.1 dB
V
out
= 20 mV
pp
A
V
= +2, R
L
= 100
Ω
+25°C
400
400
400
160
630
MHz
85
104
85
1000
153
kΩ
16.6
48
48
48
45
60
45
56
20.2
20.2
20.2
mA
dB
74
dB
54
dB
7
26
-3.1
-3.1
-3.1
0.18
+3.1
+3.1
+3.1
55
55
55
34
22
34
μA
μA
mV
4/22
Doc ID 15576 Rev 3
RHF330
Table 4.
Symbol
SR
Slew rate
Electrical characteristics
Electrical characteristics for V
CC
= ±2.5 V, T
amb
= +25° C
(unless otherwise specified) (continued)
Parameter
Test conditions
V
out
= 2 V
pp
,
A
V
= +2, R
L
= 100
Ω
R
L
= 100
Ω
Temp.
+25°C
+125°C
1.35
V
+25°C
-55°C
+125°C
1.5
1.35
-1.35
V
+25°C
-55°C
+125°C
I
sink(1)
Output to GND
+25°C
-55°C
360
360
360
-320
-320
-320
-400
453
mA
-1.55
-1.5
-1.35
1.64
Min.
Typ.
1800
Max.
Unit
V/μs
V
OH
High level output voltage
V
OL
Low level output voltage
R
L
= 100
Ω
I
out
I
source(2)
Output to GND
+125°C
+25°C
-55°C
Noise and distortion
eN
Equivalent input noise
voltage
(3)
F = 100 kHz
+25°C
+25°C
+25°C
1.3
22
16
nV/√ Hz
pA/√ Hz
pA/√ Hz
Equivalent positive input noise
F = 100 kHz
current
(3)
iN
Equivalent negative input
noise current
(3)
F = 100 kHz
A
V
= +2, V
out
= 2 V
pp
,
R
L
= 100
Ω
F = 10 MHz
SFDR
Spurious free dynamic range
F = 20 MHz
F = 100 MHz
F = 150 MHz
1. See
Figure 11
for more details.
2. See
Figure 10
for more details.
3. See
Chapter 5 on page 14.
+25°C
+25°C
+25°C
+25°C
-78
-73
-48
-37
dBc
Table 5.
Gain (V/V)
R
fb
(Ω)
Closed-loop gain and feedback components
+1
300
1
270
+2
300
-2
270
+4
240
-4
240
+ 10
200
- 10
200
Doc ID 15576 Rev 3
5/22
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