Low-power single operational amplifier

Document overview

  • Manufacturer or author: STMICROELECTRONICS
  • PDF pages: 15

Technical content

Datasheet sections

  • 1 Schematic diagram
  • 2 Absolute maximum ratings and operating conditions
  • 3 Electrical characteristics
  • 4 Macromodel
  • 4.1 Important note concerning this macromodel
  • 4.2 Macromodel code
  • 4.3 Electrical characteristics of the macromodel
  • 5 Package information
  • 5.1 SOT23-5 package information
  • 6 Ordering information
  • 7 Revision history

Features

  • Large output voltage swing − 0 to 3.5 V min (VCC = 5 V)
  • Low supply current: 500 µA
  • Low input bias current: 20 nA
  • Low input offset voltage − 2 mV max. for TS321A − 4 mV max. for TS321
  • Wide power supply range − Single supply: 3 to 30 V − Dual supplies: ±1.5 to ±15 V
  • Stable with high capacitive loads

Description

The TS321 device is intended for cost -sensitive applications where space- saving is of great importance. This bipolar operational amplifier (op amp) offers the benefits of a reduced component size (SOT23- 5 package) wi th specifications that match (or are better than) industry standard devices (such as the popular LM358A, LM324, and other similar devices). The TS321 device has an input common mode range (Vicm) that includes ground and therefore can be employed in single supply applications. SOT23-5 (plastic package) Pin connections (top view)

1 Schematic diagram

Figure 1: Schematic diagram t

Absolute maximum ratings and operating conditions TS321

2 Absolute maximum ratings and operating conditions

Table 1: Absolute maximum ratings Symbol Parameter Value Unit VCC + Supply voltage ±16 to 32 V Vin Input voltage -0.3 to 32 Vid Differential input voltage ±32 Output short-circuit duration (1) Infinite Iin Input current (2) 50 mA Tstg Storage temperature range -65 to 150 Tj Maximum junction temperature 150 Rthja Thermal resistance junction-to-ambient (3) 250 °C/W Rthjc Thermal resistance junction-to-case (3) 81 ESD HBM: human body model (4) 500 V MM: machine model (5) 200 CDM: charged device model (6) 1000 Notes: (1)Short-circuits from the output to V CC can cause excessive heating if V CC > 15 V. The maximum output current is approximately 40 mA independent of the magnitude of VCC. (2)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 input diodes clamps. In addition to this diode action, there is also 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 when the input voltage goes back above -0.3 V. (3)Short-circuits can cause excessive heating. Destructive dissip ation can result from simultaneous short-circuits on all amplifiers. All values are typical. (4)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. (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 r esistor < 5 Ω). This is done for all couples of connected pin combinations while the other pins are floating. (6)Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to ground through only one pin. This is done for all pins. Table 2: Operating conditions Symbol Parameter Value Unit VCC + Supply voltage 3 to 30 V Vicm Input common mode voltage range (VCC + = 30 V) Tamb = 25 °C 0 to (VCC +) - 1.5 Tmin ≤ Tamb ≤ Tmax 0 to (VCC +) - 2 Toper Operating free air temperature range -40 to 125 °C

3 Electrical characteristics

Table 3: Electrical characteristics at VCC + = 5 V, VCC - = ground, Vo = 1.4 V, Tamb = 25 °C (unless otherwise specified) Symbol Parameter Test conditions Min. Typ. Max. Unit Vio Input offset voltage (1) TS321 0.5 4 mV TS321A Tmin ≤ Tamb ≤ Tmax, TS321 Tmin ≤ Tamb ≤ Tmax, TS321A Iio Input offset current 2 30 nA Tmin ≤ Tamb ≤ Tmax Iib Input bias current (2) 20 150 Tmin ≤ Tamb ≤ Tmax 200 Avd Large signal voltage gain VCC + = 15 V, RL = 2 kΩ, Vo = 1.4 to 11.4 V 50 100 V/mV Tmin ≤ Tamb ≤ Tmax, VCC + = 15 V, RL = 2 kΩ, Vo = 1.4 to 11.4 V 25 SVR Supply voltage rejection ratio Rs ≤ 10 kΩ, VCC + = 5 to 30 V 65 110 dB ICC Supply current, no load VCC + = 5 V 500 800 µA VCC + = 30 V 600 900 Tmin ≤ Tamb ≤ Tmax, VCC + = 5 V 600 900 Tmin ≤ Tamb ≤ Tmax, VCC + = 30 V 1000 CMR Common mode rejection ratio R s ≤ 10 kΩ 65 85 dB Isource Output current source Vid = 1 V, VCC + = 15 V, Vo = 2 V 20 40 mA Isink Output sink current Vid = -1 V, VCC + = 15 V, Vo = 2 V 10 20 mA Vid = -1 V, VCC + = 15 V, Vo = 0.2 V 12 50 µA Io Short-circuit to ground VCC + = 15 40 60 mA VOH High-level output voltage VCC + = 30 V, RL = 2 kΩ 26 27 V Tmin ≤ Tamb ≤ Tmax, VCC + = 30 V, RL = 2 kΩ 25.5 VCC + = 30 V, RL = 10 kΩ 27 28 Tmin ≤ Tamb ≤ Tmax, VCC + = 30 V, RL = 10 kΩ 26.5 VCC + = 5 V, RL = 2 kΩ 3.5 Tmin ≤ Tamb ≤ Tmax, VCC + = 5 V, RL = 2 kΩ 3 VOL Low level output voltage RL = 10 kΩ 5 15 mV Tmin ≤ Tamb ≤ Tmax, RL = 10 kΩ SR Slew rate VCC + = 15 V, Vi = 0.5 to 3 V, RL = 2 kΩ, CL = 100 pF, unity gain 0.4 V/µs

Figure 6: DC summing amplifier

4 Macromodel

4.1 Important note concerning this macromodel

Please not the following points before using this macromodel

  • All models are a trade-off between accuracy and complexity (that is, simulation time)
  • Macromodels are not a substitute for breadboarding, rather, they confirm the validity of a design approach and help to select surrounding component values.
  • A macromodel emulates the nominal performance of a typical device within specified operating conditions (for example, temperature and supply voltage). Thus, the macromodel is often not as exhaustive as the datasheet. Its purpose is to illustrate the main parameters of the product. Data derived from macromodels used outside the specified conditions (for example, V CC and temperature) or even worse, outside of the device’s operating conditions (for example, VCC and Vicm), are not reliable in any way.

4.2 Macromodel code

Standard Linear Ics Macromodels, 1993. CONNECTIONS : * 1 INVERTING INPUT * 2 NON-INVERTING INPUT * 3 OUTPUT * 4 POSITIVE POWER SUPPLY * 5 NEGATIVE POWER SUPPLY .SUBCKT TS321 1 2 3 4 5 .MODEL MDTH D IS=1E-8 KF=3.104131E-15 CJO=10F * INPUT STAGE CIP 2 5 1.000000E-12 CIN 1 5 1.000000E-12 EIP 10 5 2 5 1 EIN 16 5 1 5 1 RIP 10 11 2.600000E+01 RIN 15 16 2.600000E+01 RIS 11 15 2.003862E+02 DIP 11 12 MDTH 400E-12 DIN 15 14 MDTH 400E-12 VOFP 12 13 DC 0 VOFN 13 14 DC 0 IPOL 13 5 1.000000E-05 CPS 11 15 3.783376E-09 DINN 17 13 MDTH 400E-12

VIN 17 5 0.000000e+00 DINR 15 18 MDTH 400E-12 VIP 4 18 2.000000E+00 FCP 4 5 VOFP 3.400000E+01 FCN 5 4 VOFN 3.400000E+01 FIBP 2 5 VOFN 2.000000E-03 FIBN 5 1 VOFP 2.000000E-03 * AMPLIFYING STAGE FIP 5 19 VOFP 3.600000E+02 FIN 5 19 VOFN 3.600000E+02 RG1 19 5 3.652997E+06 RG2 19 4 3.652997E+06 CC 19 5 6.000000E-09 DOPM 19 22 MDTH 400E-12 DONM 21 19 MDTH 400E-12 HOPM 22 28 VOUT 7.500000E+03 VIPM 28 4 1.500000E+02 HONM 21 27 VOUT 7.500000E+03 VINM 5 27 1.500000E+02 EOUT 26 23 19 5 1 VOUT 23 5 0 ROUT 26 3 20 COUT 3 5 1.000000E-12 DOP 19 25 MDTH 400E-12 VOP 4 25 2.242230E+00 DON 24 19 MDTH 400E-12 VON 24 5 7.922301E-01 .ENDS

4.3 Electrical characteristics of the macromodel

Table 4: Electrical characteristics at VCC + = 3 V, VCC - = 0 V, RL and CL connected to VCC/2, Tamb = 25 °C (unless otherwise specified) Symbol Conditions Value Unit Vio 0 mV Avd RL = 2 kΩ 100 V/mV ICC No load, per operator 300 µA Vicm 0 to 3.5 V VOH RL = 2 kΩ 3.5 V VOL 5 mV Ios Vo = 0 V 40 mA GBP RL = 2 kΩ, CL = 100 pF

0.8 MHz

SR 0.4 V/µs ϕm 60 Degrees

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. EC OPACK® specifications, grade definitions and product status are available at: www.st.com . ECOPACK® is an ST trademark.

5.1 SOT23-5 package information

Figure 7: SOT23-5 package mechanical drawing Table 5: SOT23-5 package mechanical data Ref. Dimensions Millimeters Inches 0.15 0.006 1.90 0.075 e 0.95 0.037 K 0 degrees 10 degrees 0 degrees 10 degrees

6 Ordering information

Table 6: Order codes Order code Temperature range Package Packaging Marking TS321ILT -40 °C to 125 °C SOT23-5 Tape and reel K401 TS321AILT K402 TS321IYLT (1) K406 TS321AIYLT (1) K407 Notes: (1)Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 and Q 002 or equivalent.

7 Revision history

Table 7: Document revision history Date Revision Changes 30-Jun-2001 1 Initial release 04-Jul-2005 2 PPAP references inserted in the datasheet, see order codes table. ESD protection inserted in Table 1: Absolute maximum ratings. 06-Sep-2005 3 Correction of errors in package names and markings in order codes table. Minor grammatical and formatting corrections. 12-Dec-2005 4 Missing PPAP references inserted, see order codes table. Thermal resistance junction to ambient and thermal resistance junction to case information added in Table 1: Absolute maximum ratings. Macromodel updated see Section 4: Macromodel. 08-Nov-2007 5 Added CDM value for SO-8 in Table 1: Absolute maximum ratings. Added Tj value in Table 1: Absolute maximum ratings. Macromodel updated see Section 4: Macromodel. Reformatted package information. Added footnote in Table 7: Order codes. Removed TS321IYD/IYDT and TS321AIYD/AIYDT order codes. 08-Jul-2008 6 Added CDM value for SOT23-5 package in Table 1: Absolute maximum ratings. 10-May-2010 7 Updated package information in Chapter 5. 12-Sep-2010 8 Qualified status of TS321IYLT and TS321AIYLT order codes in Table 7: Order codes, minor corrections throughout document. 12-Nov-2014 9 Removed SO8 package and all references to it Table 1: Absolute maximum ratings: Updated ESD, HBM data Section 5.1: updated SOT23-5 package information Table 7: Order codes: removed obsolete order codes (TS321ID, TS321IDT, TS321AID, TS321AIDT)