Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsLinear ICsLinear IC - Op-amp Multi-purpose SO 8

This is information on a product in full production.

September 2012 Doc ID 5560 Rev 4 1/16

TS921

Rail-to-rail high output current single operational amplifier

Datasheet − production data

Features

■ Rail-to-rail input and output

■ Low noise: 9 nV/√

■ Low distortion

■ High output current: 80 mA (able to drive 32 Ω

loads)

■ High-speed: 4 MHz, 1 V/μs

■ Operating from 2.7 V to 12 V

■ ESD internal protection: 1.5 kV

■ Latch-up immunity

■ Macromodel included in this specification

Applications

■ Headphone amplifier

■ Piezoelectric speaker driver

■ Sound cards, multimedia systems

■ Line driver, actuator driver

■ Servo amplifier

■ Mobile phone and portable communication

sets

■ Instrumentation with low noise as key factor

DIP8

(plastic package)

Pin connections (top view)

SO-8

(plastic micropackage)

TSSOP8

(thin shrink small outline package)

Table 1. Device summary

Order code

Temperature

range

Package Packing Marking

TS921IN -40 °C, +125 °C DIP8 Tube TS921IN

TS921ID/IDT SO-8 Tube or tape and reel

921I

TS921IPT

TSSOP8

(thin shrink outline package)

Tape and reel

www.st.com

Summary of content (16 pages)

PAGE 1
TS921 Rail-to-rail high output current single operational amplifier Datasheet − production data Features ■ Rail-to-rail input and output ■ Low noise: 9 nV/√Hz ■ Low distortion ■ High output current: 80 mA (able to drive 32 Ω loads) ■ High-speed: 4 MHz, 1 V/μs ■ Operating from 2.7 V to 12 V ■ ESD internal protection: 1.
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Description 1 TS921 Description The TS921 device is a rail-to-rail single BiCMOS operational amplifier optimized and fully specified for 3 V and 5 V operation. Its high output current allows low load impedances to be driven. The TS921 device exhibits very low noise, low distortion and low offset. It has a high output current capability which makes this device an excellent choice for high quality, low voltage or battery operated audio systems. The device is stable for capacitive loads up to 500 pF.
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TS921 Absolute maximum ratings 2 Absolute maximum ratings Table 2. Key parameters and their absolute maximum ratings Symbol VCC Parameter Supply voltage(1) Vid Differential input voltage Vi Input voltage Tstg Tj Condition (2) Storage temperature Maximum junction temperature Value Unit 14 V ±1 V VDD - 0.3 to VCC + 0.
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Electrical characteristics TS921 3 Electrical characteristics Table 4. Electrical characteristics for VCC = 3 V, VDD = 0 V, Vicm = VCC/2, RL connected to VCC/2, Tamb = 25 °C (unless otherwise specified) Symbol Vio Parameter Conditions Min. Typ. Input offset voltage at Tmin. ≤ Tamb ≤ Tmax ΔVio Input offset voltage drift Max. Unit 3 5 mV μV/°C 2 Iio Input offset current Vout = 1.5 V 1 30 nA Iib Input bias current Vout = 1.
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TS921 Table 5. Electrical characteristics Electrical characteristics for VCC = 5 V, VDD = 0 V, Vicm = VCC/2, RL connected to VCC/2, Tamb = 25 °C (unless otherwise specified) Symbol Vio Parameter Conditions Min. Typ. Input offset voltage at Tmin. ≤ Tamb ≤ Tmax ΔVio Input offset voltage drift Max. Unit 3 5 mV μV/°C 2 Iio Input offset current Vout = 1.5 V 1 30 nA Iib Input bias current Vout = 1.5 V 15 100 nA VOH VOL Avd GBP ICC High level output voltage RL = 600 Ω RL = 32 Ω 4.
PAGE 6
Electrical characteristics Figure 1. TS921 Output short-circuit vs. output voltage (VCC = 5 V, VDD = 0 V) Figure 2. 180 60 100 Phase 80 60 120 40 L L Gain 20 0 -20 20 60 0 0 -40 -60 Phase (deg.) Sink 40 Gain (dB) Output short-circuit current (mA) Voltage gain and phase vs. frequency (RL = 10 kΩ, CL = 100 pF) Source -80 -100 -120 0 1 2 -20 1E+02 3 1E+03 1E+04 Figure 4. Output short-circuit vs.
PAGE 7
TS921 Electrical characteristics Figure 7. THD + noise vs. frequency (RL = 32 Ω, Vo = 4 Vpp, VCC = ±2.5 V, Av = 1) Figure 8. 0.04 THD + noise vs. output voltage (RL = 600 Ω, f = 1 kHz, VCC = 0/3 V, Av = -1) 10 THD + noise (%) THD + noise (%) 0.032 0.024 0.016 1 0.1 0.008 0.01 0 0.01 0.1 1 10 0 100 0.2 0.4 0.6 0.8 1 Frequency (kHz) Figure 9. Figure 10. THD + noise vs. output voltage (RL = 32 Ω, f = 1 kHz, VCC = ±1.5 V, Av = -1) THD + noise vs.
PAGE 8
Macromodel TS921 4 Macromodel 4.1 Important note concerning this macromodel Please consider following remarks before using this macromodel: ● All models are a trade-off between accuracy and complexity (i.e. simulation time). ● Macromodels are not a substitute to 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 (i.e.
PAGE 9
TS921 4.3 Macromodel Macromodel code ** Standard Linear Ics Macromodels, 1996. ** CONNECTIONS: * 1 INVERTING INPUT * 2 NON-INVERTING INPUT * 3 OUTPUT * 4 POSITIVE POWER SUPPLY * 5 NEGATIVE POWER SUPPLY .SUBCKT TS921 1 3 2 4 5 (analog) ********************************************************* .MODEL MDTH D IS=1E-8 KF=2.664234E-16 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 8.125000E+00 RIN 15 16 8.125000E+00 RIS 11 15 2.
PAGE 10
Macromodel TS921 GCONVP 500 501 119 4 19.38!send ds VP, I(VP)=(V119-V4)/2/Ut VP 501 0 0 GCONVN 500 502 119 5 19.38!send ds VN, I(VN)=(V119-V5)/2/Ut VN 502 0 0 ********* orientation isink isource ******* VINT2 503 0 5 FCOPY 503 504 VOUT 1 DCOPYP 504 505 MDTH 400E-9 VCOPYP 505 0 0 DCOPYN 506 504 MDTH 400E-9 VCOPYN 0 506 0 *************************** F2PP 19 5 poly(2) VCOPYP VP 0 0 0 0 0.5!multiply I(vout)*I(VP)=Iout*(V119V4)/2/Ut F2PN 19 5 poly(2) VCOPYP VN 0 0 0 0 0.
PAGE 11
TS921 5 Package information 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: www.st.com. ECOPACK is an ST trademark.
PAGE 12
Package information TS921 Figure 13. DIP8 package outline Table 7. DIP8 package mechanical data Dimensions Symbol mm Min. A Typ. Max. Min. 3.3 Typ. Max. 0.130 a1 0.7 B 1.39 1.65 0.055 0.065 B1 0.91 1.04 0.036 0.041 b b1 0.028 0.5 0.38 0.020 0.5 D 0.015 0.020 9.8 0.386 E 8.8 0.346 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 F 7.1 0.280 I 4.8 0.189 L Z 12/16 inch 3.3 0.44 0.130 1.6 Doc ID 5560 Rev 4 0.017 0.
PAGE 13
TS921 Package information Figure 14. SO-8 package outline 00160 23/C Table 8. SO-8 package mechanical data Dimensions Symbol mm Min. Typ. inch Max. Min. Typ. Max. A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.04 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 E 3.80 4.00 0.150 0.157 e 1.27 0.050 H 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 k ddd 8° (max.) 0.
PAGE 14
Package information TS921 Figure 15. TSSOP8 package outline 0079397/D Table 9. TSSOP8 package mechanical data Dimensions Symbol mm Min. Typ. A Max. Min. Typ. 1.2 A1 0.05 A2 0.80 b Max. 0.047 0.15 0.002 1.05 0.031 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.008 D 2.90 3.00 3.10 0.114 0.118 0.122 E 6.20 6.40 6.60 0.244 0.252 0.260 E1 4.30 4.40 4.50 0.169 0.173 0.177 e 1.00 0.65 K 0° L 0.45 L1 14/16 inch 0.60 0.006 0.039 0.041 0.0256 8° 0° 0.
PAGE 15
TS921 6 Revision history Revision history Table 10. Document revision history Date Revision Feb. 2001 1 Initial release - Product in full production. Dec. 2004 2 Modifications on AMR table page 2 (explanation of Vid and Vi limits, ESD, MM and CDM values added, Rthja added) 3 The following changes were made in this revision: PPAP references inserted in the datasheet see Table 1. Data in tables Electrical characteristics on page 4 reformatted for easier use.
PAGE 16
TS921 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.