Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsLinear ICsLinear IC - Comparator Multi-purpose Open drain SOT 23 5

March 2009 Rev 5 1/13

TS7221

Single BiCMOS rail-to-rail micropower comparator

Features

■ Rail-to-rail inputs

■ Open drain output

■ Supply operation from 2.7 to 10 V

■ Typical supply current: 6 µA at 5 V

■ Response time of 0.5 µs at 5 V

■ Low input current

■ ESD protection: 2 kV (HBM), 200 V (MM)

■ Available in tiny SOT23-5 package

Applications

■ Battery-powered systems

■ Notebooks and PDAs

■ PCMCIA cards

■ Cellular and mobile communications

■ Alarms and security systems

■ Replacement of amplifiers used in comparator

configurations for improved performance.

Description

The TS7221 is a micropower comparator

featuring a rail-to-rail input performance in a tiny

SOT23-5 package. This comparator is ideally

suited to space and weight-critical applications. It

is fully specified at 2.7-, 5- and 10-V operation

over industrial temperature ranges

(-40°C to +85°C).

The TS7221 features an open-drain output stage.

The speed-to-power ratio makes this device ultra-

versatile for a wide range of applications.

SOT23-5L

TS7221 open drain output

OUT

Vcc-

IN+

Vcc+

IN-

www.st.com

Summary of content (13 pages)

PAGE 1
TS7221 Single BiCMOS rail-to-rail micropower comparator Features ■ Rail-to-rail inputs ■ Open drain output ■ Supply operation from 2.7 to 10 V ■ Typical supply current: 6 µA at 5 V ■ Response time of 0.
PAGE 2
Absolute maximum ratings 1 TS7221 Absolute maximum ratings Table 1. Absolute maximum ratings Symbol VCC VID VIN VOUT Parameter Supply voltage Differential input voltage Value Unit 12 V -) (VCC+) +0.3 V - (VCC+) +0.3 V (VCC -0.3 to (1) Input voltage (VCC ) -0.
PAGE 3
TS7221 Electrical characteristics 2 Electrical characteristics Table 3. Electrical characteristics at VCC+= 2.7 V, Tamb = 25° C (unless otherwise specified)(1) Symbol Parameter Min. Typ. Max.
PAGE 4
Electrical characteristics Table 4. TS7221 Electrical characteristics for VCC+= 5 V, Tamb = 25° C (unless otherwise specified)(1) Symbol Parameter Min. Typ. Max.
PAGE 5
TS7221 Table 5. Electrical characteristics Electrical characteristics for VCC+= 10 V, Tamb = 25° C (unless otherwise specified)(1) Symbol Parameter Min. Typ. Max.
PAGE 6
Electrical characteristics Figure 1. TS7221 Supply current vs. supply voltage (output low) Figure 2. 12 10 Output low No load T=+85°C 8 6 T=-40°C T=+25°C 4 T=+85°C 10 Supply current (µA) Supply current (µA) Supply current vs. supply voltage (output high) 2 8 6 4 2 0 0 2 4 6 8 0 10 Output high 0 2 4 Supply voltage (V) Figure 3. 6 8 10 Supply voltage (V) Output sinking current vs. output voltage at VCC = +2.7 V, VCC = +5 V VIO vs. Vicm and temperature at VCC = 2.
PAGE 7
TS7221 Electrical characteristics Figure 7. TPLH vs Vicm at VCC = 10 V and 10 mV overdrive Figure 8. 4 4 TAMB=+25°C RL=10kΩ & CL=50pF TPLH (µs) with 100mV overdrive TPLH (µs) with 10mV overdrive TPLH vs Vicm at VCC = 10 V and 100 mV overdrive 3 2 1 0 0 5 TAMB=+25°C RL=10kΩ & CL=50pF 3 2 1 0 10 0 Common mode voltage (V) Figure 9. TPLH vs Vicm at VCC = 5 V and 10 mV Figure 10.
PAGE 8
Electrical characteristics TS7221 Figure 13. TPHL vs Vicm at VCC = 5 V and 10 mV Figure 14. TPHL vs Vicm at VCC = 5 V and overdrive 100 mV overdrive 3 TAMB=+25°C RL=10kΩ & CL=50pF 2 1 0 0.0 2.5 Common mode voltage (V) 8/13 5.0 TPHL (µs) with 100mV overdrive TPHL (µs) with 10mV overdrive 3 TAMB=+25°C RL=10kΩ & CL=50pF 2 1 0 0.0 2.5 Common mode voltage (V) 5.
PAGE 9
TS7221 3 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 10
Package information 3.1 TS7221 SOT23-5 package information Figure 15. SOT23-5L package mechanical drawing Table 6. SOT23-5L package mechanical data Dimensions Ref. A Millimeters Min. Typ. Max. Min. Typ. Max. 0.90 1.20 1.45 0.035 0.047 0.057 A1 10/13 Inches 0.15 0.006 A2 0.90 1.05 1.30 0.035 0.041 0.051 B 0.35 0.40 0.50 0.013 0.015 0.019 C 0.09 0.15 0.20 0.003 0.006 0.008 D 2.80 2.90 3.00 0.110 0.114 0.118 D1 1.90 0.075 e 0.95 0.037 E 2.60 2.80 3.
PAGE 11
TS7221 4 Ordering information Ordering information Table 7.
PAGE 12
Revision history 5 TS7221 Revision history Table 8. Document revision history Date Revision 01-Dec-2002 1 Initial release 01-Sep-2005 2 Update of datasheet presentation and format. Change of Tlead temperature in Table 1 on page 2, to reflect change to Pb-free package. Corrections to Vicm upper rail parameters in Electrical characteristics tables. Addition of Pb-free information in Section 3: Package information on page 9. Correction to package mechanical data given in Figure 15 on page 10.
PAGE 13
TS7221 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.