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ht9291/ht9292/ht9294 tinypower tm operation amplifier selection table part no. amplifiers package ht9291 1 tsot23-5 ht9292 2 8dip/sop ht9294 4 14dip/sop block diagram rev. 1.10 1 october 12, 2010 features wide operating voltage: 1.4v to 5.5v low quiescent current: typical 0.6 a/amplifier rail-to-rail output gain bandwidth: 11khz typical unity gain stable available in single, dual and quad op s package types package type: ht9291: tsot23-5 ht9292: 8-pin dip/sop ht9294: 14-pin dip/sop applications wearable products temperature measurement battery powered products portable equipment low power sensors general description the holtek ht9291/ht9292/ht9294 range of low power operation amplifiers offer the advantage of a sin - gle supply voltage down to as low as 1.4v as well as the advantages of an extremely low quiescent current of only 0.6 a/amplifier. one other major advantage of these devices lie in their rail-to-rail voltage operation for maximum range. the devices also provide a typical gain bandwidth product of 11khz and are also unity gain sta- ble. the devices are available in a range of packages according the number of internal amplifiers. the special characteristics of these devices will ensure their excel - lent use in applications with stringent low power de - mands such as portable products, battery powered equipment, low power sensor signal processing etc.

pin assignment pin descriptions ht9291 pin no. pin name description 1 out analog output 2 vss negative power supply 3 in+ non-inverting input 4 in- inverting input 5 vdd positive power supply ht9292 pin no. pin name description 1 1out analog output (operation amplifier 1) 2 1in- inverting input (operation amplifier 1) 3 1in+ non-inverting input (operation amplifier 1) 4 vss negative power supply 5 2in+ non-inverting input (operation amplifier 2) 6 2in- inverting input (operation amplifier 2) 7 2out analog output (operation amplifier 2) 8 vdd positive power supply ht9294 pin no. pin name description 1 1out analog output (operation amplifier 1) 2 1in- inverting input (operation amplifier 1) 3 1in+ non-inverting input (operation amplifier 1) 4 vdd positive power supply 5 2in+ non-inverting input (operation amplifier 2) 6 2in- inverting input (operation amplifier 2) 7 2out analog output (operation amplifier 2) 8 3out analog output (operation amplifier 3) 9 3in- inverting input (operation amplifier 3) 10 3in+ non-inverting input (operation amplifier 3) 11 vss negative power supply 12 4in+ non-inverting input (operation amplifier 4) 13 4in- inverting input (operation amplifier 4) 14 4out analog output (operation amplifier 4) ht9291/ht9292/ht9294 rev. 1.10 2 october 12, 2010

absolute maximum ratings supply voltage .......................................................6.0v input voltage..............................v ss 0.3v ~ v dd +0.3v difference input voltage .............................. (v dd v ss ) esd protection on all pins (hbm;mm) ........ 4kv; 400v storage temperature ......................... 65 c to +150c operating temperature ........................ 40 cto+85 c junction temperature ..........................................150 c note: these are stress ratings only. stresses exceeding the range specified under absolute maximum ratings may cause substantial damage to the device. functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. electrical characteristics unless otherwise indicated, v ss =gnd, ta=25 c, v cm =v dd /2, v l =v dd /2, and r l =1m to v l ,c l =60pf symbol parameter test conditions min. typ. max. unit v dd conditions v dd supply voltage 1.4 5.5 v v os input offset voltage 5v v in =v cm /2 5.0 5.0 mv v os
t drift with temperature 5v v in =v cm /2 2 v/c i os input offset current 5v ta=25c 5 pa i b input bias current 5v ta=25c 50 pa v cm input common mode range 5v 0 v dd 1.2 v v oh v ol maximum output voltage swing 5v 0.5v input overdrive r l =1m to v l v ss +10 v dd 10 mv 0.5v input overdrive r l =50k to v l v ss +20 v dd 50 mv a ol dc open-loop gain (large signal) 5v v out =0.2v to v dd -0.2v, v in =v cm /2 70 100 db gbw gain bandwidth product 5v r l =1m,c l =60pf v in =v cm /2 11 khz m phase margin 5v r l =1m,c l =60pf g=+1v/v, v in+ =v dd /2 50 cmrr common mode rejection ratio 5v v cm =0v to v dd -1.4v 60 90 db psrr power supply rejection ratio 5v vcm = 0.2v 65 95 db i cc supply current per single amplifier 5v io=0a for ht9291 0.50 0.80 1.20 a io=0a for ht9292/ht9294 0.30 0.60 1.00 a sr slew rate at unity gain 5v r l =1m,c l =60pf 5 v/ms i o_source output short circuit source current 5v v in+ v in- 10mv 0.3 1.2 ma i o_sink output short circuit sink current 5v v in- v in+ 10mv 14 ma ht9291/ht9292/ht9294 rev. 1.10 3 october 12, 2010
ht9291/ht9292/ht9294 rev. 1.10 4 october 12, 2010 functional description input stage the input stage of op amps are nominal pmos differen - tial amplifiers (see the following diagram), therefore the common mode input voltage can extend to v ss -0.6v. on the other hand the common mode input voltage has to be maintained below (v dd 1.2v) to keep the input de - vice (m2 and m3) active. this implies that when using ht9291/ht9292/ht9294 as a voltage follower, the in - put as well as output active range will be limited be - tween v ss ~v dd -1v (approx.). avoid applying any voltage greater than v dd +0.6v or less than v ss -0.6v to the input pins, otherwise the internal input protection de - vices may be damaged. since the input impedance of pmos is inherently very high, it can directly couple to high impedance elements without loading effect. for example, coupling to ceramic transducers, integrating capacitor and resistor net - works. actually the extremly high input impedance is its major advantage over the bipolar counterpart, in some appli - cation fields such as integrators where the input current of op amp can cause significant error. output stage the ht9291/ht9292/ht9294 uses push-pull cmos configuration as the output stage of op amps to mini - mize low power consumption and to provide adequate output driving current. note that the output is an unbuffered structure, therefore the open loop gain will be affected by the load resistor since the voltage gain of this stage can be expressed as (gm5+ gm6) r l . because of the consideration for minimized power con- sumption, the output short circuit current is limited to about -1.2ma for source drive and 4ma for sink drive. this is believed to be enough for most low power sys- tems, however it is recommended to use the load resis- tor of >1m
for normal applications. in case of heavy load driving, an external buffer stage using bipolar tran- sistors is recommended. the ht9291/ht9292/ht9294 is internally compen - sated for ac stability and capable to withstand up to a 60pf capacitive load.

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application circuits high side battery current sensor two op amp instrumentation amplifier ht9291/ht9292/ht9294 rev. 1.10 5 october 12, 2010

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package information 5-pin tsot23-5 outline dimensions mo-193c symbol dimensions in inch min. nom. max. a 0.043 a1 0.000 0.004 a2 0.028 0.039 b 0.012 0.020 c 0.003 0.008 d 0.114 e 0.110 e1 0.063 e 0.037 e1 0.075 l 0.012 0.024 l1 0.024 08 symbol dimensions in mm min. nom. max. a 1.10 a1 0.00 0.10 a2 0.70 1.00 b 0.30 0.50 c 0.08 0.20 d 2.90 e 2.80 e1 1.60 e 0.95 e1 1.90 l 0.30 0.60 l1 0.60 08 ht9291/ht9292/ht9294 rev. 1.10 6 october 12, 2010
8-pin dip (300mil) outline dimensions symbol dimensions in inch min. nom. max. a 0.355 0.375 b 0.240 0.260 c 0.125 0.135 d 0.125 0.145 e 0.016 0.020 f 0.050 0.070 g 0.100 h 0.295 0.315 i 0.375 symbol dimensions in mm min. nom. max. a 9.02 9.53 b 6.10 6.60 c 3.18 3.43 d 3.18 3.68 e 0.41 0.51 f 1.27 1.78 g 2.54 h 7.49 8.00 i 9.53 ht9291/ht9292/ht9294 rev. 1.10 7 october 12, 2010 " " 3
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14-pin dip (300mil) outline dimensions symbol dimensions in inch min. nom. max. a 0.745 0.775 b 0.240 0.260 c 0.125 0.135 d 0.125 0.145 e 0.016 0.020 f 0.050 0.070 g 0.1100 h 0.295 0.315 i 0.375 symbol dimensions in mm min. nom. max. a 18.92 19.69 b 6.10 6.60 c 3.18 3.43 d 3.18 3.68 e 0.41 0.51 f 1.27 1.78 g 2.54 h 7.49 8.00 i 9.53 ht9291/ht9292/ht9294 rev. 1.10 8 october 12, 2010 3
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8-pin sop (150mil) outline dimensions ms-012 symbol dimensions in inch min. nom. max. a 0.228 0.244 b 0.150 0.157 c 0.012 0.020 c 0.188 0.197 d 0.069 e 0.050 f 0.004 0.010 g 0.016 0.050 h 0.007 0.010 08 symbol dimensions in mm min. nom. max. a 5.79 6.20 b 3.81 3.99 c 0.30 0.51 c 4.78 5.00 d 1.75 e 1.27 f 0.10 0.25 g 0.41 1.27 h 0.18 0.25 08 ht9291/ht9292/ht9294 rev. 1.10 9 october 12, 2010
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14-pin sop (150mil) outline dimensions ms-012 symbol dimensions in inch min. nom. max. a 0.228 0.244 b 0.150 0.157 c 0.012 0.020 c 0.337 0.344 d 0.069 e 0.050 f 0.004 0.010 g 0.016 0.050 h 0.007 0.010 08 symbol dimensions in mm min. nom. max. a 5.79 6.20 b 3.81 3.99 c 0.30 0.51 c 8.56 8.74 d 1.75 e 1.27 f 0.10 0.25 g 0.41 1.27 h 0.18 0.25 08 ht9291/ht9292/ht9294 rev. 1.10 10 october 12, 2010 3
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product tape and reel specifications reel dimensions sop 8n symbol description dimensions in mm a reel outer diameter 330.01.0 b reel inner diameter 100.01.5 c spindle hole diameter 13.0 +0.5/-0.2 d key slit width 2.00.5 t1 space between flange 12.8 +0.3/-0.2 t2 reel thickness 18.20.2 sop 14n symbol description dimensions in mm a reel outer diameter 330.01.0 b reel inner diameter 100.01.5 c spindle hole diameter 13.0 +0.5/-0.2 d key slit width 2.00.5 t1 space between flange 16.8 +0.3/-0.2 t2 reel thickness 22.20.2 tsot23-5 symbol description dimensions in mm a reel outer diameter 178.01.0 b reel inner diameter 60.01.0 c spindle hole diameter 13.0 +0.5/-0.2 d key slit width 2.40.1 t1 space between flange 9.00.5 t2 reel thickness 11.80.5 ht9291/ht9292/ht9294 rev. 1.10 11 october 12, 2010 3

carrier tape dimensions sop 8n symbol description dimensions in mm w carrier tape width 12.0 +0.3/-0.1 p cavity pitch 8.00.1 e perforation position 1.750.1 f cavity to perforation (width direction) 5.50.1 d perforation diameter 1.550.1 d1 cavity hole diameter 1.50 +0.25/-0.00 p0 perforation pitch 4.00.1 p1 cavity to perforation (length direction) 2.00.1 a0 cavity length 6.40.1 b0 cavity width 5.20.1 k0 cavity depth 2.10.1 t carrier tape thickness 0.300.05 c cover tape width 9.30.1 sop 14n symbol description dimensions in mm w carrier tape width 16.0 +0.3/-0.1 p cavity pitch 8.00.1 e perforation position 1.750.1 f cavity to perforation (width direction) 7.50.1 d perforation diameter 1.5 +0.1/-0.0 d1 cavity hole diameter 1.50 +0.25/-0.00 p0 perforation pitch 4.00.1 p1 cavity to perforation (length direction) 2.00.1 a0 cavity length 6.50.1 b0 cavity width 9.50.1 k0 cavity depth 2.10.1 t carrier tape thickness 0.300.05 c cover tape width 13.30.1 ht9291/ht9292/ht9294 rev. 1.10 12 october 12, 2010
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carrier tape dimensions tsot23-5 symbol description dimensions in mm w carrier tape width 8.00.2 p cavity pitch 4.00.1 e perforation position 1.750.10 f cavity to perforation (width direction) 3.500.05 d perforation diameter 1.5 +0.1/-0.0 d1 cavity hole diameter 1.1 +0.1/-0.0 p0 perforation pitch 4.00.1 p1 cavity to perforation (length direction) 2.000.05 a0 cavity length 3.20.1 b0 cavity width 3.20.1 k0 cavity depth 1.10.1 t carrier tape thickness 0.250.05 c cover tape width 5.30.1 ht9291/ht9292/ht9294 rev. 1.10 13 october 12, 2010
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ht9291/ht9292/ht9294 rev. 1.10 14 october 12, 2010 holtek semiconductor inc. (headquarters) no.3, creation rd. ii, science park, hsinchu, taiwan tel: 886-3-563-1999 fax: 886-3-563-1189 http://www.holtek.com.tw holtek semiconductor inc. (taipei sales office) 4f-2, no. 3-2, yuanqu st., nankang software park, taipei 115, taiwan tel: 886-2-2655-7070 fax: 886-2-2655-7373 fax: 886-2-2655-7383 (international sales hotline) holtek semiconductor inc. (shenzhen sales office) 5f, unit a, productivity building, no.5 gaoxin m 2nd road, nanshan district, shenzhen, china 518057 tel: 86-755-8616-9908, 86-755-8616-9308 fax: 86-755-8616-9722 holtek semiconductor (usa), inc. (north america sales office) 46729 fremont blvd., fremont, ca 94538 tel: 1-510-252-9880 fax: 1-510-252-9885 http://www.holtek.com copyright 2010 by holtek semiconductor inc. the information appearing in this data sheet is believed to be accurate at the time of publication. however, holtek as - sumes no responsibility arising from the use of the specifications described. the applications mentioned herein are used solely for the purpose of illustration and holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. holtek s products are not authorized for use as critical components in life support devices or systems. holtek reserves the right to alter its products without prior notification. for the most up-to-date information, please visit our web site at http://www.holtek.com.tw.

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