RT2902. RobuST low-power quad operational amplifier. Applications. Description. Features

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1 RobuST low-power quad operational amplifier Datasheet - production data Features D SO14 (plastic micropackage) Pin connections (top view) Output 1 Non-inverting Input 1 3 Non-inverting Input 2 Inverting Input 2 1 Inverting Input 1 2 VCC 4 11 VCC - Output Wide gain bandwidth: 1.3 MHz Input common-mode voltage range includes negative rail Large voltage gain: 100 db Very low supply current per amplifier: 375 µa Low input bias current: 20 na Low input offset current: 2 na Wide power supply range: Single supply: 3 V to 30 V Dual supplies: ±1.5 V to ±15 V 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 Output 4 Inverting Input 4 Non-inverting Input 4 Non-inverting Input 3 Inverting Input 3 Output 3 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 125 C) Applications Aerospace and defense Harsh environments Description This circuit consists of four independent, high gain operational amplifiers which employ internal frequency compensation and are specifically designed for aerospace and defense systems. The device operates from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the lowpower supply current drain is independent from the power supply voltage magnitude. October 2014 DocID Rev 1 1/16 This is information on a product in full production.

2 Contents Contents 1 Absolute maximum ratings and operating conditions Schematic diagram Electrical characteristics Typical single-supply applications Package information SO14 package information Ordering information Revision history /16 DocID Rev 1

3 Absolute maximum ratings and operating conditions 1 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings (AMR) Symbol Parameter Value Unit V CC Supply voltage (1) V id Differential input voltage (2) ±16 to 33 V in Input voltage -0.3 to 32 Output short-circuit duration (3) Infinite T j Maximum junction temperature 150 C Input current (4) 5 in DC or 50 in AC : V in driven negative (duty cycle = 10 %, T = 1 s) I in ma Input current (5) : V in driven positive above 0.4 AMR value T stg Storage temperature range -65 to 150 C R thja Thermal resistance junction to ambient (6) 105 C/W R thjc Thermal resistance junction to case (6) 31 ESD HBM: human body model (7) MM: machine model (8) CDM: charged device model (9) 1. All voltage values, except the differential voltage are with respect to network ground terminal. 2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. 3. Short-circuit from the output to V CC can cause excessive heating and eventual destruction. The maximum output current is approximately 20 ma, independent of the magnitude of V CC. 4. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistor becoming forward-biased and thereby acting as an input diode clamp. In addition to this diode action, there is an NPN parasitic action on the IC chip. This transistor action can cause the output voltages of the op amp to go to the V CC voltage level (or to ground for a large overdrive) for the time during which an input is driven negative. This is not destructive and normal output is restored for input voltages above -0.3 V. 5. The junction base/substrate of the input PNP transistor polarized in reverse must be protected by a resistor in series with the inputs to limit the input current to 400 µa max (R = (Vin - 36 V)/400 µa). 6. R thja/c are typical values 7. 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. 8. 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 Ω). This is done for all couples of connected pin combinations while the other pins are floating. 9. 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 V s V DocID Rev 1 3/16 16

4 Absolute maximum ratings and operating conditions Table 2. Operating conditions Symbol Parameter Value Unit V CC Supply voltage 3 to 30 V icm T min T amb T max (V CC ) - 2 Common mode input voltage range (V CC ) T oper Operating free-air temperature range -40 to 125 C V 4/16 DocID Rev 1

5 Schematic diagram 2 Schematic diagram Figure 1. Schematic diagram ( ) DocID Rev 1 5/16 16

6 Electrical characteristics 3 Electrical characteristics Table 3. V CC = 5 V, V CC - = ground, V o = 1.4 V, T amb = 25 C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit V io Input offset voltage (1), T min T amb T max 9 Input offset voltage (1) 2 7 ΔV io /ΔT Input offset voltage drift 7 30 µv/ C Input offset current 2 30 I io na Input offset current, T min T amb T max 40 DI io Input offset current drift pa/ C Input bias current (2) I ib na Input bias current (2), T min T amb T max 300 A vd SVR I cc CMR I O Large signal voltage gain (V CC = 15 V, R L = 2 kω, V o = 1.4 V to 11.4 V) Large signal voltage gain (V CC = 15 V, R L = 2 kω, V o = 1.4 V to 11.4 V), T min T amb T max Supply voltage rejection ratio (R S 10 kω) Supply voltage rejection ratio (R S 10 kω), T min T amb T max 65 Supply current, all amps, no load V CC = 5 V V CC = 30 V T min T amb T max V CC = 5 V V CC = 30 V Common-mode rejection ratio (R S 10 kω) Common-mode rejection ratio (R S 10 kω), T min T amb T max 60 Output short-circuit current (V id = 1 V, V CC = 15 V, V o = 2 V) I sink Output sink current (V id = -1 V) V CC = 15 V, V o = 2 V V CC = 15 V, V o = 0.2 V V OH High level output voltage (V CC = 30 V) R L = 2 kω T min T amb T max R L = 10 kω T min T amb T max V CC = 5 V, R L = 2 kω T min T amb T max mv V/mV db ma db ma ma µa 28 V 6/16 DocID Rev 1

7 Electrical characteristics V OL Low level output voltage (R L = 10 kω), T min T amb T max 20 Low level output voltage (R L = 10 kω) 5 20 SR GBP THD e n Table 3. V CC = 5 V, V CC - = ground, V o = 1.4 V, T amb = 25 C (unless otherwise specified) (continued) Symbol Parameter Min. Typ. Max. Unit Slew rate (V CC = 15 V, V in = 0.5 to 3 V, R L = 2 kω, C L = 100 pf, unity gain) Gain bandwidth product (V CC = 30 V, V in = 10 mv, R L = 2 kω, C L = 100 pf) Total harmonic distortion (f = 1 khz, A V = 20 db, R L = 2 kω, V o = 2 V pp, C L = 100 pf, V CC = 30 V) Equivalent input noise voltage (f = 1 khz, R S = 100 Ω, V CC = 30 V) V O1 /V O2 Channel separation (3) (1 khz f 20 khz) mv 0.4 V/µs 1.3 MHz % db 1. V O = 1.4 V, R S = 0 Ω, 5 V < V CC < 30 V, 0 V < V ic < (V CC ) 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 stray capacitance does not cause coupling between these external parts. This typically can be detected as this type of capacitance increases at higher frequencies. nv Hz DocID Rev 1 7/16 16

8 Electrical characteristics Figure 2. Input bias current vs. T amb Figure 3. Input voltage range Figure 4. Current limiting Figure 5. Supply current Figure 6. Gain bandwidth product Figure 7. Voltage follower pulse response OUTPUT VOLTAGE(V) RL 2 kω VCC = 15V 3 INPUT VOLTAGE (V) TIME (μ s) 8/16 DocID Rev 1

9 Electrical characteristics Figure 8. Common mode rejection ratio Figure 9. Output characteristics (sink) COMMON MODE R E JE CTION R ATIO (db) V 100kΩ 100 Ω 60 - e 40 O e 100 Ω I 100kΩ V K 10K 100K 1M FREQUENCY (Hz) Figure 10. Open-loop frequency response VOLTAGE GAIN (db) M Ω μF - V CC 100 VI V O VCC/2 80 VCC = 30V & C Tamb 125 C VCC = 10 to 15V & -55 C Tamb 125 C k 10k 100k 1M 10M FREQUENCY (Hz) Figure 12. Large signal frequency response Figure 11. Voltage follower pulse response OUTPUT VOLTAGE (mv) el - Output Input Tamb =25 C V CC =30V TIME (μs) eo 50pF Figure 13. Output characteristics (source) OUTPUT S WING (Vpp) V I 100k Ω 1k Ω 15V - 7V 2k Ω VO 0 1k 10k 100k 1M FREQUENCY (Hz) DocID Rev 1 9/16 16

10 Electrical characteristics Figure 14. Input current VOLTAGE GAIN (db) Figure 15. Voltage gain R L = 20k Ω R L = 2kΩ POSITIVE SUPPLY VOLTAGE (V) Figure 16. Power supply and common mode rejection ratio Figure 17. Large signal voltage gain 10/16 DocID Rev 1

11 Typical single-supply applications 4 Typical single-supply applications Figure 18. AC coupled inverting amplifier Figure 19. AC coupled non-inverting amplifier C I 10 kω R f A = - R f V (a s s hown A V = -10) C o 0 e o 2V PP C μf C I R2 1 MΩ A = 1 R2 V (a s s hown A V = 11) C o 0 e o 2 V PP e I ~ V CC R2 R B 6.2 kω R3 R L 10 kω e I ~ R3 1 MΩ R 6.2 kω B R4 R L 10 kω C1 10 μf C2 10 μf V CC R5 Figure 20. Non-inverting DC gain Figure 21. DC summing amplifier 10 kω A V =1 R2 (As s hown = 101 ) A V e 1 e O 5 V e O e 2 10 kω R2 1 MΩ e O (V ) e 3 e 4 0 e I (mv ) eo = e1 e2 - e3 - e4 where (e1 e2) (e3 e4) to keep eo 0 V Figure 22. Active bandpass filter Figure 23. High input Z adjustable gain DC instrumentation amplifier e 1 R3 10 kω R4 10 MΩ C2 330 pf R6 470 kω C1 330 pf R5 470 kω e 1 R2 2 kω Ga in adjust R5 R3 R4 e O Fo = 1 khz Q = 50 Av = 100 (40 db) R8 C3 10 μf R7 e O V CC e 2 If = R5 and R3 = R4 = R6 = R7 eo = [ 1 2R 1] (e2 - e1) R2 As sho wn eo = 101 (e2 - e1) R6 R7 DocID Rev 1 11/16 16

12 Typical single-supply applications Figure 24. High input Z, DC differential amplifier Figure 25. Low drift peak detector I B R2 R3 R4 V1 V o V2 eo = [ 1 R4 ] (e2 - e1) R3 As sho wn eo = (e2 - e1) e I Z I 1 μf 2I B R 1 MΩ C * I B 2I B 2N 929 I B 3R 3 MΩ μf I B Z o e o Input current compensatio n * Polycarbonat e or polyethylene Figure 26. Using symmetrical amplifiers to reduce input current (general concept) I I I B e o e I I B 2N μf I B 1.5 MΩ I B 3 MΩ I B Aux. amplifier for input current compensatio n 12/16 DocID Rev 1

13 Package information 5 Package information 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: ECOPACK is an ST trademark. DocID Rev 1 13/16 16

14 Package information 5.1 SO14 package information Figure 27. SO14 package mechanical drawing Table 4. SO14 package mechanical data Dimensions Ref. Millimeters Inches Min. Typ. Max. Min. Typ. Max. A A A B C D E e H h L k 8 (max.) ddd /16 DocID Rev 1

15 Ordering information 6 Ordering information Table 5. Order codes Order code Temperature range Package Packing Marking YDT -40 C to 125 C SO14 Tape and reel R2902Y 7 Revision history Table 6. Document revision history Date Revision Changes 08-Oct Initial release DocID Rev 1 15/16 16

16 IMPORTANT NOTICE PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries ( ST ) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document STMicroelectronics All rights reserved 16/16 DocID Rev 1

17 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: STMicroelectronics: YDT

RT2904WH. RobuST low-power dual operational amplifier. Applications. Features. Description

RT2904WH. RobuST low-power dual operational amplifier. Applications. Features. Description RobuST low-power dual operational amplifier Datasheet - production data Features D SO8 (plastic micropackage) Pin connections (top view) Frequency compensation implemented internally Large DC voltage gain: