RT2904WH
287
,1
,1
9&&
D
SO8
(plastic micropackage)
Pin connections (top view)
9&&
287
,1
,1
Features
• Frequency compensation implemented internally
• Large DC voltage gain: 100 dB
• Wide bandwidth (unity gain): 1.1 MHz
(temperature compensated)
• Very low supply current/amplifier, essentially independent of supply voltage
• Low input bias current: 20 nA (temperature compensated)
• Low input offset current: 2 nA
• Input common-mode voltage range includes negative rail
• Differential input voltage range equal to the power supply voltage
• Large output voltage swing 0 V to (V
CC+
) - 1.5V
RobuST low-power dual operational amplifier
Datasheet
-
production data
• Intended for use in aerospace and defense applications :
– Dedicated traceability and part marking
– Approval documents available for production parts
– Adapted extended life time and obsolescence management
– Extended product change notification process
– Designed and manufactured to meet sub ppm quality goals
– Advanced mold and frame designs for superior resilience to harsh environments
(acceleration, EMI, thermal, humidity)
– Extended screening capability on request
– Single fabrication, assembly, and test site
– Temperature range (-40 °C to 150 °C)
Applications
• Aerospace and defense
• Harsh environments
Description
This circuit consists of two independent, high gain operational amplifiers with frequency compensation implemented internally. It is designed specifically for aerospace and defense applications.
The circuit operates from a single power supply over a wide range of voltages. Low power supply drain is independent of the magnitude of the power supply voltage.
In linear mode, the input common-mode voltage range includes ground and the output voltage can also swing to ground, even though operated from a single power supply.
October 2014
This is information on a product in full production.
DocID026931 Rev 1 1/13 www.st.com
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6
3
4
1
2
Contents
Contents
RT2904WH
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1
SO8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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RT2904WH
1
Absolute maximum ratings and operating conditions
Absolute maximum ratings and operating conditions
Symbol
V
CC
+
V
V id in
Table 1. Absolute maximum ratings
Parameter
Supply voltage
Differential input voltage
Input voltage
Output short-circuit to ground
(1)
Value
32
-0.3 to V
CC
+0.3
-0.3 to V
CC
+0.3
40
Unit
V mA
T j
R thja
R thjc
I in
T stg
ESD
Maximum junction temperature
Thermal resistance junction to ambient
Thermal resistance junction to case
Input current (3)
Storage temperature range
HBM: human body model
(4)
MM: machine model
(5)
CDM: charged device model
(6)
(2)
(2)
150
125
40
5
-65 to 150
2
200
°C
°C/W mA
°C kV
V
1.5
kV
1. Short-circuits from the output to V
CC can cause excessive heating if V from simultaneous short-circuits on all amplifiers.
CC
CC
+ > 15 V. The maximum output
. Destructive dissipation can result
2. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
3. This input current only exists when the voltage values applied on the inputs is beyond the supply voltage line limits. This is not destructive if the current does not exceed 5 mA as indicated, and normal output is restored for input voltages above -0.3 V.
4. Human body model: A 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5k
resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
5. 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 < 5 connected pin combinations while the other pins are floating.
Ω ). This is done for all couples of
6. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins.
Symbol
Table 2. Operating conditions
Parameter Value Unit
V
CC
+
T oper
Supply voltage
Operating free-air temperature range
3 to 30
-40 to 150
V
°C
V icm
Input common mode voltage range (V
CC
+
=+30V)
(1)
T
T amb
= 25 °C min
≤ T amb
≤ T max
0 to (V
CC
+
0 to (V
)
CC
+
)
- 1.5
- 2
1. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V. The upper end of the common-mode voltage range is V inputs can go to +32 V without damage.
CC
+
–1.5 V, but either or both
V
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13
Schematic diagram
Figure 1. Schematic diagram (1/2 RT2904WH)
RT2904WH
4/13 DocID026931 Rev 1
RT2904WH Electrical characteristics
Symbol
V io
I io
I ib
A vd
SVR
I
CC
CMR
I source
I sink
V
OPP
V
OH
V
OL
Table 3. V
CC
+ = 5V, V
CC
= ground, V o
= 1.4 V, T
(unless otherwise specified) amb
= 25 °C
Parameter Min.
Typ.
Max.
Input offset voltage
(1)
T min
≤ T amb
≤ max
Input offset current
T min
≤ T amb
≤ T max
Input bias current
(2)
T min
≤ T amb
≤ max
Large signal voltage gain
V
CC
+
T min
= 15 V, R
L
=2 k Ω , V o
= 1.4 V to 11.4 V
≤ T amb
≤ T max
Supply voltage rejection ratio
V
CC
+
T min
= 5 to 30 V, R
S
≤ 10 k Ω
≤ T amb
≤ max
Supply current, all amps, no load
V
CC
+
= 5 V
T min
≤ T amb
≤ max
, V
CC
= 30 V
Common-mode rejection ratio (R
S
= 10 k Ω )
T min
≤ T amb
≤ max
Output short-circuit current
V
CC
+
T min
= 15 V, V o
= 2 V, V
≤ T amb
≤ max id
= 1 V
Output sink current
V
O
= 2 V, V
T min
≤ T amb
CC
+
≤
= 5 V max
V
O
= 0.2 V, V
T min
CC
+
= 15 V
≤ T amb
≤ T max
Output voltage swing (R
L
= 2 k Ω)
T min
≤ T amb
≤ max
High level output voltage (V
CC
+
= 30 V)
R
L
T min
= 2 k Ω
≤ T amb
≤ T max
R
L
= 10 k Ω
T min
≤ T amb
≤ max
Low level output voltage (R
L
= 10 k Ω )
T min
≤ T amb
≤ max
50
2.5
65
65
70
60
20
10
10
5
12
10
0
0
26
26
27
27
2
2
20
100
100
0.7
85
40
20
50
27
28
5
7
9
30
40
150
200
1.2
2
60
(V
CC
+
(V
)
CC
+ )
- 1.5
- 2
20
20
Unit mV nA
V/mV dB mA dB mA mA
µA
V mV
DocID026931 Rev 1 5/13
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Electrical characteristics RT2904WH
Table 3. V
CC
+ = 5V, V
CC
= ground, V o
= 1.4 V, T amb
(unless otherwise specified) (continued)
= 25 °C
Parameter Min.
Typ.
Max.
Symbol Unit
SR
GBP
Slew rate (unity gain)
V
CC
+
T min
= 15 V, Vi = 0.5 to 3 V, R
L
= 2 k Ω , C
L
= 100 pF,
≤ T amb
≤ max
Gain bandwidth product f = 100 kHz
V
CC
+
T min
= 30 V, V in
≤ T amb
= 10 mV, R
L
= 2 k Ω , C
≤ max
L
= 100 pF
0.3
0.2
0.7
0.45
0.6
1.1
V/µs
MHz
THD e n
Total harmonic distortion f = 1 kHz, A
V
= 20 dB, R
L
C
L
= 100 pF, V
CC
= 30 V
= 2 k Ω , V o
= 2 V pp
,
Equivalent input noise voltage, f = 1 kHz, R
S
V
CC
= 30 V
= 100 Ω ,
Input offset voltage drift
0.02
55 nV/
%
√ Hz
DV io
7 30 µV/°C
DI io
Input offset current drift 10 300 pA/°C
V
O1
/V
O2
Channel separation (3)
1 kHz ≤ f ≤ 120 dB
1. V
O
= 1.4 V, R
S
= 0 Ω , 5 V < V
CC
+
< 30 V, 0 V < V ic
< (V
CC
+
) - 1.5 V.
2. The direction of the input current is out of the IC. This current is essentially constant, independent of the state of the output, so there is no change in the loading charge on the input lines.
3. Due to the proximity of external components, ensure that stray capacitance does not cause coupling between these external parts. Typically, this can be detected because this type of capacitance increases at higher frequencies.
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RT2904WH
Figure 2. Open-loop frequency response
120
100
T
Ambient
=+25°C
T
Ambient
=+125°C
80
60 T
Ambient
=+150°C
40
20
0
10 0 10 1 10 2 10 3 10
FREQUENCY (Hz)
4 10 5 10 6
Figure 4. Voltage follower pulse response
4
3
R L 2 k Ω
V C C = +15V
2
1
0
3
2
1
0 10 20
T IME (
μ s )
30 40
Figure 6. Supply current
1.5
Figure 3. Large signal frequency response
20
15 V I
1k
Ω
+7V
-
100k
Ω
+15V
V O
+ 2k
Ω
10
5
0
1k
Electrical characteristics
10k 100k
F R E QUE NC Y (Hz)
1M
Figure 5. Input bias current
50
40
30
20
10
0
T
Ambient
=+125°C T
Ambient
=+150°C
T
Ambient
=-40°C
T
Ambient
=+25°C
10 20
SUPPLY VOLTAGE (V)
Figure 7. Output characteristics vs. +V
CC
30
1.0
T
Ambient
=-40°C T
Ambient
=+25°C
T
Ambient
=+125°C
0.5
T
Ambient
=+150°C
0.0
0 10 20
SUPPLY VOLTAGE (V)
30
DocID026931 Rev 1 7/13
13
Electrical characteristics
Figure 8. Output characteristics vs. GND
10
V C C = +5V
V C C = +15V
V C C = +30V
1 vcc /2
vcc
0.1
+
IO
VO
T amb = +25°C
0.01
0,001 0,01 0,1 1 10
OUT P UT S INK C UR R E NT (
μ
A)
100
Figure 10. Voltage follower pulse response on 50 pF
Figure 9. Current limiting
RT2904WH
Figure 11. Input voltage range
8/13
Figure 12. Voltage gain
160
R = 20k Ω
120
80
R = 2k Ω
40
Figure 13. Gain bandwidth product
0 10 20 30 40
POSITIVE SUPPLY VOLTAGE (V)
DocID026931 Rev 1
RT2904WH Electrical characteristics
Figure 14. Power supply rejection ratio versus temperature
Figure 15. Common mode rejection ratio versus temperature
DocID026931 Rev 1 9/13
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Package information RT2904WH
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK ® packages, depending on their level of environmental compliance. ECOPACK ® specifications, grade definitions and product status are available at: www.st.com
.
ECOPACK ® is an ST trademark.
10/13 DocID026931 Rev 1
RT2904WH
4.1 SO8 package information
Figure 16. SO8 package mechanical drawing
Package information
Ref.
h
L
L1 k ccc b c
D
A
A1
A2
E
E1 e
Min.
0.10
1.25
0.28
0.17
4.80
5.80
3.80
0.25
0.40
1°
Table 4. SO8 package mechanical data
Dimensions
Millimeters
Typ.
Min.
Max.
1.75
0.25
4.90
6.00
3.90
1.27
0.48
0.23
5.00
6.20
4.00
0.004
0.049
0.011
0.007
0.189
0.228
0.150
0.50
1.27
0.010
0.016
1.04
8°
0.10
1°
Inches
Typ.
0.193
0.236
0.154
0.050
0.040
DocID026931 Rev 1
Max.
0.069
0.010
0.019
0.010
0.197
0.244
0.157
0.020
0.050
8°
0.004
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Ordering information RT2904WH
Order code
RT2904WHYDT
Table 5. Order codes
Temperature range Package
-40 °C to 150 °C SO8
Packing
Tape and reel
Marking
R2904WHY
Date
08-Oct-2014
Table 6. Document revision history
Revision Changes
1 Initial release.
12/13 DocID026931 Rev 1
RT2904WH
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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2014 STMicroelectronics – All rights reserved
DocID026931 Rev 1 13/13
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