ST TS881 User Manual

TS881

Rail-to-rail 1.1 V nanopower comparator

Features

■Ultra low current consumption: 210 nA typ.

■Propagation delay: 2 µs typ.

■Rail-to-rail inputs

■Push-pull output

■Supply operation from 1.1 V to 5.5 V

■Wide temperature range: -40 to +125 °C

■ESD tolerance: 4 kV HBM / 300 V MM

■SMD package

Applications

■Portable systems

■Signal conditioning

■Medical

Description

The TS881 device is a single comparator featuring ultra low supply current (210 nA typical with output high, VCC = 1.2 V, no load) with rail-to- rail input and output capability. The performance of this comparator allows it to be used in a wide range of portable applications. The TS881 device minimizes battery supply leakage and therefore enhances battery lifetime.

Operating from 1.1 to 5.5 V supply voltage, this comparator can be used over a wide temperature range (-40 to +125 °C) keeping the current consumption at an ultra low level.

The TS881 device is available in the SC70-5 package, allowing great space saving on the PCB.

Datasheet −production data

SC70-5 (top view)

Figure 1. Pin connections (top view)

/54			6##
6##
).			).

July 2012

Doc ID 023340 Rev 1

1/17

This is information on a product in full production.

www.st.com

Contents	TS881

Contents

1	Absolute maximum ratings and operating conditions . . . . . . . . . . . .	. 3
2	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
3	Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
4	Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
5	Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16

2/17	Doc ID 023340 Rev 1

TS881	Absolute maximum ratings and operating conditions

1 Absolute maximum ratings and operating conditions

Table 1.		Absolute maximum ratings
Symbol			Parameter	Value	Unit
V	CC		Supply voltage(1)	6	V
VID			Differential input voltage(2)	±6	V
VIN			Input voltage range	(VCC-) - 0.3 to (VCC+) + 0.3	V
			Thermal resistance junction-to-
RTHJA			ambient(3)	205	°C/W
			SC70-5
TSTG			Storage temperature	-65 to +150	°C
TJ			Junction temperature	150	°C
TLEAD			Lead temperature (soldering 10 seconds)	260	°C
			Human body model (HBM)(4)	4	kV
ESD			Machine model (MM)(5)	300	V
			Charged device model (CDM)(6)	1300
			Latch-up immunity	200	mA

1.All voltage values, except differential voltages, are referenced to VCC-. VCC is defined as the difference between VCC+ and VCC-.

2.The magnitude of input and output voltages must never exceed the supply rail ±0.3 V.

3.Short-circuits can cause excessive heating. These values are typical.

4.According to JEDEC standard JESD22-A114F.

5.According to JEDEC standard JESD22-A115A.

6.According to ANSI/ESD STM5.3.1.

	Table 2.	Operating conditions
	Symbol		Parameter	Value	Unit
	Toper	Operating temperature range		-40 to +125	°C
	VCC	Supply voltage			V
		-40	°C < Tamb < +125 °C	1.1 to 5.5
		Common mode input voltage range
	VICM	-40	°C < Tamb < +85 °C	VCC- - 0.2 to VCC+ + 0.2	V
		-40	°C < Tamb < +125 °C	VCC- to VCC+ + 0.2

Doc ID 023340 Rev 1

3/17

Electrical characteristics	TS881

2 Electrical characteristics

Table 3. VCC = +1.2 V, Tamb = +25 °C, VICM = VCC/2 (unless otherwise specified)(1)

Symbol			Parameter	Test conditions			Min.	Typ.	Max.	Unit
	V	IO	Input offset voltage(2)	-40 °C < T	<	+125 °C	-6	1	6	mV
				amb
	VIO		Input offset voltage drift	-40 °C < Tamb <		+125 °C		3		µV/°C
V	HYST		Input hysteresis voltage(3)	-40 °C < T	<	+125 °C	1.6	2.4	4.2	mV
				amb
	IIO		Input offset current(4)						10	pA
				-40 °C < Tamb <		+125 °C			100
	I		Input bias current(4)					1	10	pA
	IB			-40 °C < Tamb <		+125 °C			100
				No load, output low, VID = -0.1 V				300	450
				-40 °C < Tamb <		+85 °C			500
	ICC		Supply current per operator	-40 °C < Tamb <		+125 °C			1050	nA
				No load, output high, VID = +0.1 V				210	350
				-40 °C < Tamb <		+85 °C			400
				-40 °C < Tamb <		+125 °C			950
	ISC		Short-circuit current	Source				1.4		mA
				Sink				1.0
				Isource = 0.2 mA			1.13	1.15		V
VOH			Output voltage high	-40 °C < Tamb <		+85 °C	1.10
				-40 °C < Tamb <		+125 °C	1.00
VOL				Isink = 0.2 mA				40	50
			Output voltage low	-40 °C < Tamb <		+85 °C			60	mV
				-40 °C < Tamb <		+125 °C			70
CMRR			Common mode rejection ratio	0 < VICM < VCC		+125 °C	50	68		dB
				-40 °C < T	<
				amb
				f = 1 kHz, CL = 30 pF, RL = 1 MΩ				6	11
				Overdrive = 10 mV
TPLH			Propagation delay	-40 °C < Tamb <		+125 °C			13	µs
			(low to high)
				Overdrive = 100 mV				2.2	3.1
				-40 °C < Tamb <		+125 °C			3.4
				f = 1 kHz, CL = 30 pF, RL = 1 MΩ				5.1	8
				Overdrive = 10 mV
TPHL			Propagation delay	-40 °C < Tamb <		+125 °C			10	µs
			(high to low)
				Overdrive = 100 mV				2.0	2.6
				-40 °C < Tamb <		+125 °C			3.1
	TR		Rise time (10% to 90%)	CL = 30 pF, RL = 1 MΩ				100		ns

4/17	Doc ID 023340 Rev 1

TS881

Electrical characteristics

Table 3.

V = +1.2 V, T

amb

= +25 °C, V

= V

CC

/2 (unless otherwise specified)(1) (continued)

CC

ICM

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

TF

Fall time (90% to 10%)

CL = 30 pF, RL = 1 MΩ

110

ns

TON

Power-up time

1.0

1.5

ms

1.All values over the temperature range are guaranteed through correlation and simulation. No production test is performed at the temperature range limits.

2.The offset is defined as the average value of positive and negative trip points (input voltage differences requested to change the output state in each direction).

3.The hysteresis is a built-in feature of the TS881 device. It is defined as the voltage difference between the trip points.

4.Maximum values include unavoidable inaccuracies of the industrial tests.

Table 4.		VCC = +2.7 V, Tamb = +25 °C, VICM = VCC/2 (unless otherwise specified)(1)
Symbol		Parameter	Test conditions		Min.	Typ.		Max.	Unit
V		Input offset voltage(2)				1			mV
	IO		-40 °C < Tamb <	+125 °C	-6			6
VIO		Input offset voltage drift	-40 °C < Tamb <	+125 °C		3			µV/°C
VHYST		Input hysteresis voltage(3)				2.7			mV
			-40 °C < Tamb <	+125 °C	1.6			4.2
IIO		Input offset current(4)						10	pA
			-40 °C < Tamb <	+125 °C				100
I		Input bias current(4)				1		10	pA
IB			-40 °C < Tamb <	+125 °C				100
			No load, output low, VID = -0.1 V			310		450
			-40 °C < Tamb <	+85 °C				500
ICC		Supply current per operator	-40 °C < Tamb <	+125 °C				1150	nA
			No load, output high, VID = +0.1 V			220		350
			-40 °C < Tamb <	+85 °C				400
			-40 °C < Tamb <	+125 °C				1050
ISC		Short-circuit current	Source			12			mA
			Sink			10
			Isource = 2 mA		2.48	2.51			V
VOH		Output voltage high	-40 °C < Tamb <	+85 °C	2.40
			-40 °C < Tamb <	+125 °C	2.10
VOL			Isink = 2 mA			140		210
		Output voltage low	-40 °C < Tamb <	+85 °C				230	mV
			-40 °C < Tamb <	+125 °C				310
CMRR		Common mode rejection ratio	0 < VICM < VCC	+125 °C	55	74			dB
			-40 °C < T <
			amb
			f = 1 kHz, CL = 30 pF, RL = 1 MΩ
			Overdrive = 10 mV			6.3		12
TPLH		Propagation delay	-40 °C < Tamb <	+125 °C				13	µs
		(low to high)
			Overdrive = 100 mV			2.4		3.0
			-40 °C < Tamb <	+125 °C				3.7

Doc ID 023340 Rev 1

5/17

Electrical characteristics						TS881
Table 4.	VCC = +2.7 V, Tamb = +25 °C, VICM = VCC/2 (unless otherwise specified)(1) (continued)
Symbol	Parameter	Test conditions	Min.	Typ.	Max.	Unit
		f = 1 kHz, CL = 30 pF, RL = 1 MΩ
		Overdrive = 10 mV		6.4	12
TPHL	Propagation delay	-40 °C < Tamb < +125 °C			14	µs
	(high to low)
		Overdrive = 100 mV		2.3	3.0
		-40 °C < Tamb < +125 °C			3.7
TR	Rise time (10% to 90%)	CL = 30 pF, RL = 1 MΩ		120		ns
TF	Fall time (90% to 10%)	CL = 30 pF, RL = 1 MΩ		130		ns
TON	Power-up time			0.9	1.5	ms

1.All values over the temperature range are guaranteed through correlation and simulation. No production test is performed at the temperature range limits.

2.The offset is defined as the average value of positive and negative trip points (input voltage differences requested to change the output state in each direction).

3.The hysteresis is a built-in feature of the TS881. It is defined as the voltage difference between the trip points.

4.Maximum values include unavoidable inaccuracies of the industrial tests.

Table 5.	V = +5 V, T	amb	= +25 °C, V		ICM	= V /2 (unless otherwise specified)(1)
	CC					CC
Symbol	Parameter					Test conditions	Min.	Typ.		Max.	Unit
VIO	Input offset voltage(2)							1			mV
				-40 °C < Tamb < +125 °C			-6			6
VIO	Input offset voltage drift			-40 °C < Tamb < +125 °C				3			µV/°C
VHYST	Input hysteresis voltage(3)							3.1			mV
				-40 °C < Tamb < +125 °C			1.6			4.2
IIO	Input offset current(4)									10	pA
				-40 °C < Tamb < +125 °C						100
IIB	Input bias current(4)							1		10	pA
				-40 °C < Tamb < +125 °C						100
				No load, output low, VID = -0.1 V				350		500
				-40 °C < Tamb < +85 °C						750
ICC	Supply current per operator			-40 °C < Tamb < +125 °C						1350	nA
				No load, output high, VID = +0.1 V				250		400
				-40 °C < Tamb < +85 °C						650
				-40 °C < Tamb < +125 °C						1250
ISC	Short-circuit current			Source				32			mA
				Sink				36
				Isource = 2 mA			4.86	4.90			V
VOH	Output voltage high			-40 °C < Tamb < +85 °C			4.75
				-40 °C < Tamb < +125 °C			4.60
VOL				Isink = 2 mA				95		130
	Output voltage low			-40 °C < Tamb < +85 °C						170	mV
				-40 °C < Tamb < +125 °C						280

6/17	Doc ID 023340 Rev 1