TS12011 TOUCHSTONE | Alldatasheet

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© 2012 Touchstone Semiconductor, Inc. All rights reserved.

FEATURES

 Nanopower Op Amp, Comparator, and 0.58V Reference in Single 4 mm2 Package  Ultra Low Total Supply Current: 1.6µA (max)  Supply Voltage Operation: 0.8V to 2.5V  Internal 0.58V Reference  Op Amp and Comparator Input Ranges are Rail-to-Rail  Unity-gain Stable Op Amp with AVOL = 104dB  Op Amp Output: Rail-to-Rail and Phase- Reversal-Free  Internal ±7.5mV Comparator Hysteresis  20µs Comparator Propagation Delay  Resettable Latched Comparator  TS12011: Push-pull Rail-to-Rail Output Stage with Crowbar-Current Free Switching  TS12012: Open-drain Output Stage for Wired- OR or Mixed-Voltage System Applications

APPLICATIONS

Low-Frequency, Local-Area Alarms/Detectors Smoke Detectors and Safety Sensors Infrared Receivers for Remote Controls Instruments, Terminals, and Bar-Code Readers Battery-powered Systems Smart-Card Readers

DESCRIPTION

The TS12011/TS12012 combine a 0.58V reference, a 20µs analog comparator, and a unity -gain stable operational amplifier in a single package. All three devices operate from a single 0.8V to 2.5V power supply and consume less than 1.6 µA total supply current. Optimized for ultra -long life, sin gle-cell and battery-powered applications, these devices expand Touchstone’s growing “NanoWatt Analog™” high - performance analog integrated circuits portfolio. Both the analog comparator and the op amp feature rail-to-rail input stages. The analog comparat or exhibits ±7.5mV of internal hysteresis for clean, chatter-free output switching. The internal reference was designed to sink or source up to 0.1µA load currents. When compared against similar products, the TS12011 and the TS12012 offer a factor -of-20 lower power consumption and at least a 55% reduction in pcb area. The TS 12011 and the TS12012 are fully specified over the -40°C to +85°C temperature range and each is available in a low -profile, 10-pin 2x2mm TDFN package with an exposed back-side paddle. A 0.8V/1.5µA Nanopower Op Amp, Comparator, and Reference TYPICAL APPLICATION CIRCUIT The Touchstone Semiconductor logo and “NanoWatt Analog” are registered trademarks of Touchstone Semiconductor, Incorporated. Pilot Light Flame Detector with Low-Battery Lockout Circuit Part Number Comparator Output Stage TS12011 Push-pull TS12012 Open-Drain

Page 2 TS12011_12DS r1p0 RTFDS ABSOLUTE MAXIMUM RATINGS Input Voltage Output Voltage Output Current Short-Circuit Duration (REFOUT, AMPOUT, COMPOUT)………………...….Continuous Continuous Power Dissipation (TA = +70°C) Electrical and thermal stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is not implied. Exposure to any absolute maximum rating conditions for extended periods may affect device reliability and lifetime. PACKAGE/ORDERING INFORMATION ORDER NUMBER PART MARKING CARRIER QUANTITY ORDER NUMBER PART MARKING CARRIER QUANTITY TS12011ITD1022TP AAL Tape & Reel ----- TS12012ITD1022TP AAM Tape & Reel ----- TS12011ITD1022T Tape & Reel 3000 TS12012ITD1022T Tape & Reel 3000 Lead-free Program: Touchstone Semiconductor supplies only lead-free packaging. Consult Touchstone Semiconductor for products specified with wider operating temperature ranges.

TS12011_12DS r1p0 Page 3 RTFDS

ELECTRICAL CHARACTERISTICS

VDD = 0.8V; VSS = 0V; VCOMPIN+/- = 0V; VAMPIN+/- = 0V; VAMPOUT = (VDD + VSS)/2; VCOMPOUT = HiZ; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. See note 1. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage VDD 0.8 2.5 V Supply Current IDD REFOUT = open TA = +25°C 1.1 1.6 µA -40°C ≤ TA ≤ 85°C 2 REFERENCE SECTION Reference Output Voltage VREFOUT TA = +25°C 555 577 600 mV -40°C ≤ TA ≤ 85°C 552 602 Reference Load Regulation IOUT = ±100nA 0.5 % AMPLIFIER SECTION Input Offset Voltage VOS VAMPIN+/- = VDD or VAMPIN+/- = VSS TA = +25°C 3.5 mV Input Bias Current IIN+, IN- VAMPIN+, VAMPIN- = (VDD – VSS)/2 20 nA Input Offset Current IOS VAMPIN+, VAMPIN- = (VDD – VSS)/2 0.01 5 nA Input Common-Mode Range IVR Guaranteed by Input Offset Voltage Test VSS VDD V Large-Signal Voltage Gain AVOL RL = 100K to VDD/2; VSS + 50mV < VOUT < VDD - 50mV 90 104 dB Gain-Bandwidth Product GBWP RL = 100kΩ//20pF 15 kHz Phase Margin φM RL = 100kΩ//20pF 70 deg Slew Rate SR RL = 100kΩ//20pF 6 V/ms Common-Mode Rejection Ratio CMRR 0V ≤ VIN(CM) ≤ 2.1V; VDD = 2.5V 50 75 dB Power-Supply Rejection Ratio PSRR 0.65V ≤ (VDD - VSS) ≤ 2.5V 50 75 dB Output High Voltage VOH RL = 100kΩ to VSS VDD – 50mV V Output Low Voltage VOL RL = 100kΩ to VDD VSS + 50mV V Output Source Current ISC+ VAMPOUT = VSS 0.28 mA Output Sink Current ISC- VAMPOUT = VDD 4.5 mA Output Load Capacitive Drive COUT 50 pF COMPARATOR SECTION Input Offset Voltage VOS VAMPIN+/- = VDD; VAMPIN+/- = VSS; See Note 2 TA = +25°C 4.5 mV Input Hysteresis VHB See Note 3 ±7.5 mV Input Bias Current IIN+, IN- VCOMPIN+, VCOMPIN- = VDD or VSS 20 nA Input Offset Current IOS VCOMPIN+, VCOMPIN- = VDD or VSS 0.2 5 nA Input Voltage Range IVR Guaranteed by Input Offset Voltage Test VSS VDD V Common-Mode Rejection Ratio CMRR 0V ≤ VIN(CM) ≤ 2.1V; VDD = 2.5V 50 60 dB Power-Supply Rejection Ratio PSRR 0.8V ≤ (VDD - VSS) ≤ 2.5V 50 70 dB Low-to-High Propagation Delay tPD+ VOVERDRIVE = 10mV; See Note 4 TS12011 30 µs VOVERDRIVE = 100mV; See Note 4 20 µs High-to-Low Propagation Delay tPD- VOVERDRIVE = 10mV; See Note 4 30 µs VOVERDRIVE = 100mV; See Note 4 20 µs Output High Voltage VOH TS12011; IOUT = -100μA VDD – 0.1 V Output Low Voltage VOL TS12011 ; IOUT = 100μA VSS + 0.1 V Output Low Voltage VOL TS12012 ; IOUT = 100μA VSS + 0.11 V Output Short-Circuit Current ISC Sourcing; VCOMPOUT = VSS 0.1 mA TS12011 ; Sinking; VCOMPOUT = VDD 0.5 mA TS12012 ; Sinking; VCOMPOUT = VDD 1.4 mA Open Drain Leakage TS12012 ; VCOMPOUT = 5V 20 nA

Page 4 TS12011_12DS r1p0 RTFDS VDD = 0.8V, VSS = 0V, VCOMPIN+/- = 0V, VAMPIN+/- = 0V, VAMPOUT = (VDD + VSS)/2, VCOMPOUT = HiZ. TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. See note 1. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CONTROL PIN SECTION T Input Low Voltage VIL Comparator Latched Output Enabled T Input High Voltage VIH Comparator Latched Output Disabled T Input Leakage V T = VSS; V T = 5.5V 100 nA Note 1: All devices are 100% production tested at TA = +25°C and are guaranteed by characterization for TA = TMIN to TMAX, as specified. Note 2: VOS is defined as the center of the hysteresis band at the input. Note 3: The hysteresis-related trip points are defined by the edges of the hysteresis band and measured with respect to the center of the hysteresis band (i.e., VOS). Note 4: The propagation delays are specified with an output load capacitance of CL = 15pF. VOVERDRIVE is defined above and is beyond the offset voltage and hysteresis of the comparator input.

TS12011_12DS r1p0 Page 5 RTFDS PIN FUNCTIONS PIN NAME FUNCTION

1 AMPOUT Amplifier Output

2 AMPIN- Amplifier Inverting Input

3 AMPIN+ Amplifier Non-inverting Input

4 VSS Negative Supply Voltage. 5 T Latch Enable Pin. When T is set HIGH, the output of the comparator will toggle normally based on the inputs to the comparator. For instance, when T is set LOW and the TS12011 output is HIGH, the output will remain HIGH despite any changes to the input of the comparator. The output will once again respond to changes to the input when T is toggled HIGH. If the output of the comparator is initially LOW and the T is then LOW, the output will stay LOW. If a LOW-to- HIGH transition occurs on the output, the output will switch to HIGH and stay HIGH and not respond to any changes at the input. The T pin must always be set to a known state. The TS12012 output is the inverted version of the TS12011 output. For unlatched comparator operation, set T to HIGH.

6 COMPIN+ Comparator Non-inverting Input

7 REFOUT 0.58V Reference Output

8 COMPIN- Comparator Inverting Input

9 COMPOUT Comparator Output.TS12011 has a push-pull output stage. TS12012 has an open-drain output stage. 10 VDD Positive Supply Voltage. Connect a 0.1µF bypass capacitor from this pin to analog VSS/GND. EP ---- Exposed paddle is electrically connected to VSS/GND.

Page 6 TS12011_12DS r1p0 RTFDS BLOCK DIAGRAM THEORY OF OPERATION The TS12011 and TS12012 combine a 0.58 V ±4.5% reference, a 20µs analog comparator, and a unity - gain stable operational amplifier in a single package. All three devices operate from a single 0.8V to 2.5V power supply and consume less than 1.6 µA total supply current. The TS12011 comparator has a push- pull output stage while the TS12012 comparator has an open -drain output stage that allows for easy output voltage level translation as can occur when driving systems powered with a different power supply rail. Both the analog comparator and the op amp feature a common mode input range from V SS to VDD. The analog comparator exhibits ±7.5mV of internal hysteresis for clean, chatter -free output switching. The internal reference was designed to sink or source up to 0.1µA load currents. The TS12011 and the TS12012 have a latch enable pin T that allows the output of the comparator to latch to either a HIGH or LOW state under certain conditions. If T is set HIGH , the COMPOUT output will respond to the applied comparator input . However, when T is set LOW and the TS12011 output is HIGH, COMPOUT will remain HIGH until T toggles LOW. When COMPOUT is initially LOW instead, COMPOUT will latch HIGH and remain HIGH on a LOW-to-HIGH transition at the input of the comparator until T goes HIGH . The TS12012 output is the inverte d version of the TS12011 output. The T pin must not be left open and should be connected to VDD for normal unlatched operation or to VSS for latched operation. Op Amp The TS12011 and TS12012 have a unity-gain stable op-amp with a GBWP of 15kHz, a slew rate of 6V/ms, and can drive a capacitive load up to 50pF. The common mode input voltage range extends from VSS to V DD and the input bias current and

TS12011 can source 0.1mA of current. parallel with the feedback resistor. as the voltage difference between the two trip points. Figure 1. TS12011/TS12012 Threshold

point is (VREFOUT - VCOMPOUT)/R2. set. In this example, VHYSB is set to 100mV. The 160kΩ standard value for R1 is chosen. to high as V COMPIN+ rises above the trip point. In this example, VTHR is set to 2. value resistor is selected for R3. Figure 2. Using Three Resistors Introduces

surface mount resistors and capacitors. networks should be made as short as possible. Figure 4. Pilot Light Flame Detector with Low-Battery Lockout Circuit

Touchstone Semiconductor, Inc. Page 11

630 Alder Drive, Milpitas, CA 95035 TS12011_12DS r1p0

+1 (408) 215 - 1220 ▪ www.touchstonesemi.com RTFDS PACKAGE OUTLINE DRAWING Information furnished by Touchstone Semiconductor is believed to be accurate and reliable. However, Touchstone Semiconductor does not assume any responsibility for its use nor for any infringements of patents or other rights of third parties that may result from its use , and all information provided by Touchstone Semiconductor and its suppliers is provided on an AS IS basis, WITHOUT WARRANTY OF ANY KIN D. Touchstone Semiconductor reserves the right to ch ange product specifications and product descriptions at any time without any advance notice. No license is granted by implication or otherwise under any patent or patent rights of Touchstone Semiconductor. Touchstone Semiconductor assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using Touchstone Semiconductor components. To minimize the risk associated with customer products and applicatio ns, customers should provide a dequate design and operating safeguards. Trademarks and registered trademarks are the property of their respective owners. 0.200±0.050 BOTTOM VIEW 2.000±0.050 2.000±0.050 TOP VIEW 10L STSLP (2x2mm) Pin 1 DOT BY MARKING PIN #1 IDENTIFICATION

0.152 Ref

A 0.000-0.050 NOTE!

  • All dimensions in mm.
  • This part is compliant with JEDEC MO-229 spec A MAX. NOM. MIN. 0.600 0.550 0.500 SIDE VIEW 0.900±0.050 Exp.DAP 1.400±0.050 Exp.DAP 0.300±0.050

0.400 Bsc

10-Pin TDFN22 Package Outline Drawing (N.B., Drawings are not to scale)