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iC-PT 3324
preliminary
Rev A6, Page 1/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
FEATURES o o o o o o o o o o o o o Monolithic photodiode array with excellent signal matching Very compact size for small encoders Moderate track pitch for relaxed assembly tolerances Low noise signal amplifiers with high EMI tolerance Single-pin programming of 3 operating modes: analog, digital, and x2 interpolation A-AND-B gated Z index signal Complementary outputs: A, B, Z and NA, NB, NZ U, V, W commutation signals (digital/analog) All outputs +/- 4 mA push-pull, current-limited and short-circuit-proof LED power control with 40 mA high-side driver Single 3.5 V to 5.5 V operation, low power consumption Operating temperature range of -40 to +85 C (optional -40 to +120 C) Suitable code disc: PT3S 33-1024 (glass) OD 33.2 mm, ID 13.0 mm, optical radius 14.5 mm, 1024 ppr and 3 ppr commutation (120)
APPLICATIONS o Incremental encoder o BLDC motor commutation
PACKAGES
optoQFN32-5x5
5 mm x 5 mm x 0.9 mm
BLOCK DIAGRAM
+3.5..5.5V C1 1F
iC-PT
PA NA PB NB PZ NZ
POWER-ON RESET
TIP
TIN
SEL
LED POWER CONTROL
VCC LED PA NA PB NB PZ
D1 R1 47
SIGNAL COMPARATION AND QUADRATURE OUTPUT
INDEX OUTPUT
NZ
U U V W W COMMUTATION GND
+ V
Copyright (c) 2011 iC-Haus
http://www.ichaus.com
iC-PT 3324
preliminary
Rev A6, Page 2/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
DESCRIPTION iC-PT 3324 is an optical sensor IC with integrated photosensors whose signals are converted into voltages by low-noise transimpedance amplifiers. Precise voltage comparators with hysteresis are used to generate the digital signals, supplied to the output pins via differential +/- 4 mA push-pull drivers. The built-in LED power control with its 40 mA driver stage permits a direct connection of the encoder LED. Regardless of aging or changes in temperature the received optical power is kept constant. An external resistor presets the photocurrent operating point and thus the desired illumination level. Selection input SEL chooses for three different operating modes: regular A/B operation, A/B operation with 2-fold interpolation, or analog operation. With analog operation the amplified signal voltages are available at the outputs for inspection and monitoring encoder assembly. Typical applications of iC-PT devices are incremental encoders for motor feedback and commutation. To this end, device version iC-PT 3324 provides differential A/B tracks and a differential index track, each consisting of multiple photo sensors. The layout of the signal amplifiers is such that there is an excellent paired channel matching, eliminating the needs for signal calibration in most cases. Additionally, three more tracks are provided to generate motor commutation information for the U, V and W outputs, for instance with 120 degree phase shift to operate 3-phase brushless motors (period count and phase shift can be varied by the code disc applied).
iC-PT 3324
preliminary
Rev A6, Page 3/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
PACKAGES PAD LAYOUT Chip size 2.88 mm x 3.37 mm PAD FUNCTIONS No. Name Function See pin configuration.
PIN CONFIGURATION oQFN32-5x5 (5 mm x 5 mm)
PIN FUNCTIONS No. Name Function 1 VCC 2 LED +3.5..5.5 V Supply Voltage LED Controller, High-Side Current Source Output Push-Pull Output A+ / Test Sig. Sin+ Push-Pull Output A- / Test Sig. SinPush-Pull Output B+ / Test Sig. Cos+ Push-Pull Output B- / Test Sig. CosPush-Pull Output Z+ / Test Signal Z+ Push-Pull Output Z- / Test Signal ZOp. Mode Selection Input: lo = digital hi = x2 interpolated open = analog (alignment aid) Push-Pull Output W / Test Signal W Negative Test Current Input Push-Pull Output V / Test Signal V Positive Test Current Input Push-Pull Output U / Test Signal U Ground Backside Paddle
32 31 30 29 28 27 26 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 24 23 22 21 20 19 18 17
3 4 5 6 7 8 9..16 17
PA NA PB NB PZ NZ n.c. SEL
18 19 20 21 22 23 24 25..32
W TIN V TIP U n.c. GND n.c. BP
Pin numbers marked n.c. are not in use. The backside paddle is not intended as an electrical connection point; when used as shield a single link to GND is permissible. The test pins TIP and TIN may remain unconnected. Capacitive pin loads must be avoided when using the analog test signals for alignment purposes.
iC-PT 3324
preliminary
Rev A6, Page 4/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
PACKAGE DIMENSIONS
RECOMMENDED PCB-FOOTPRINT
4.90 3.60
15 R0.
0.30
SIDE
4.90 0.90 3.60 0.50 0.30
TOP
5 1.90
BOTTOM
3.60
3.24
0.50
0.23
dra_pt33xx-oqfn32-2_pack_1, 10:1
Maximum molding excess +20 m / -200 m versus surface of glass. All dimensions given in mm.
0.40
3.60
5
0.70
iC-PT 3324
preliminary
Rev A6, Page 5/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
ABSOLUTE MAXIMUM RATINGS
These ratings do not imply operating conditions; functional operation is not guaranteed. Beyond these ratings device damage may occur. Item No. Symbol Parameter Supply Voltage Current in VCC Voltage at Output Pins PA, NA, PB, NB, PZ, NZ, U, V, W Current in Output Pins PA, NA, PB, NB, PZ, NZ, U, V, W Voltage at LED Current in LED Voltage at TIP, TIN, SEL Current in TIP, TIN, SEL ESD Susceptibility, all pins Junction Temperature Chip-Storage Temperature Range HBM, 100 pF discharged through 1.5 k -40 -40 Conditions Min. -0.3 -20 -0.3 -20 -0.3 -120 -0.3 -20 Max. 6 20 VCC + 0.3 20 VCC + 0.3 20 VCC + 0.3 20 2 150 150 V mA V mA V mA V mA kV C C Unit
G001 VCC G002 I(VCC) G003 V() G004 I() G005 V() G006 I() G007 V() G008 I() G009 Vd() G010 Tj G011 Ts
THERMAL DATA
Item No. T01 T02 T03 Symbol Ta Ts Tpk Parameter Operating Ambient Temperature Range (extended range on request) Permissible Storage Temperature Range Soldering Peak Temperature tpk < 20 s, convection reflow tpk < 20 s, vapor phase soldering MSL 5A (max. floor live 24 h at 30 C and 60 % RH); Please refer to customer information file No. 7 for details. Conditions Min. -40 -40 Typ. Max. 85 85 245 230 C C C C Unit
All voltages are referenced to ground unless otherwise stated. All currents flowing into the device pins are positive; all currents flowing out of the device pins are negative.
iC-PT 3324
preliminary
Rev A6, Page 6/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
ELECTRICAL CHARACTERISTICS
Operating conditions: VCC = 3.5...5.5 V, Tj = -40...125 C, LED = r = 740 nm, unless otherwise noted Item No. 001 002 003 004 005 006 Symbol Parameter Conditions Min. VCC I(VCC) Vc()lo Vc()hi Vc()hi Vc()hi Permissible Supply Voltage Supply Current in VCC Clamp-Voltage lo at all pins Clamp-Voltage hi at all pins no load, photocurrents within op. range I() = -4 mA, versus GND I() = 4 mA 0.3 0.7 -1.2 3.5 3 Typ. Max. 5.5 10 -0.3 11 1.2 2.2 V mA V V V V Unit
Total Device
Clamp-Voltage hi at LED, PA, NA, I() = 4 mA, versus VCC PB, NB, PZ, NZ, U, V, W Clamp-Voltage hi at SEL, TIP, TIN Spectral Application Range Peak Sensitivity Wavelength Radiant Sensitive Area PA, PB, NA, NB (sum of segments) U, V, W (per segment) PZ, NZ (sum of segments) LED = 740 nm LED = pk LED = pk, Vout() < Vout()mx; PA, PB, NA, NB U, V, W PZ, NZ I() = 4 mA, versus VCC
Photosensors 101 102 103 ar pk Aph() Se(ar) = 0.25 x S()max 400 680 0.134 0.16 0.066 0.5 0.55 950 nm nm mm2 mm2 mm2 A/W A/W
104 105 106
S(r) S()max E()mxpk
Spectral Sensitivity Maximum Spectral Sensitivity Permissible Irradiance
1.3 0.9 2
mW/ cm2 mW/ cm2 mW/ cm2 550 nA V/W V/W M M %/C 0.2 8 12 24 2.5 % mV mV mV mV kHz 1.8 985 0.75 3000 200 2250 V mV V A A
Photocurrent Amplifiers 201 202 203 Iph() ()r Z() Permissible Photocurrent Operating Range Photo Sensitivity for PA, PB, NA, NB (light-to-voltage conversion ratio) for PZ, NZ, U, V, W Equivalent Transimpedance Gain Z = Vout() / Iph(), Tj = 27 C; for PA, PB, NA, NB for PZ, NZ, U, V, W Temperature Coefficient of Transimpedance Gain Transimpedance Gain Matching Dark Signal Matching of A, B Dark Signal Matching of U, V, W Dark Signal Matching of A, B, Z, U, V, W Cut-off Frequency (-3 dB) Maximum Output Voltage Dark Signal Level Short-Circuit Current hi Short-Circuit Current lo Internal Output Resistance illumination to E()mxpk load 100 k vs. +2 V Vout()acmx = Vout()mx - Vout()d SEL open, load current to ground SEL open, load current to IC f = 1 kHz 1.04 640 0.3 100 20 250 SEL open, P vs. N path per diff. channel SEL open, output vs. output SEL open, output vs. output SEL open, any output vs. any output SEL open, P vs. N path per diff. channel -0.2 -8 -12 -24 -2.5 400 1.27 770 0.5 1800 40 750 0 0.1 0.2 0.56 0.66 0.3 0.4 0.75 1.0 -0.12
0.5 0.6 1 1.36
204 205 206 207 208 209 211 301 302 303 304 305 306
TCz Z()pn Vout() Vout() Vout()
Vout()pn Dark Signal Matching fc()hi Vout()mx Vout()d Isc()hi Isc()lo Ri()
Analog Outputs PA, NA, PB, NB, PZ, NZ, U, V, W
Vout()acmx Maximum Signal Level
iC-PT 3324
preliminary
Rev A6, Page 7/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
ELECTRICAL CHARACTERISTICS
Operating conditions: VCC = 3.5...5.5 V, Tj = -40...125 C, LED = r = 740 nm, unless otherwise noted Item No. Symbol Parameter Conditions Min. Upper Comparator Threshold Lower Comparator Threshold Comparator Hysteresis Permissible LED Output Current Saturation Voltage hi Short-Circuit Current hi Saturation Voltage lo Saturation Voltage lo Saturation Voltage lo Short-Circuit Current lo Saturation Voltage hi Saturation Voltage hi Short-Circuit Current hi Upper Threshold Voltage hi Upper Threshold Voltage lo Upper Threshold Hysteresis Lower Threshold Voltage hi Lower Threshold Voltage lo Lower Threshold Hysteresis Pin-Open Voltage Pull-Down Resistor Pull-Up Resistor Pull-Down Voltage vs. VCC/2 Pull-Up Voltage vs. VCC/2 Permissible Test Current Range Test Pin Voltage Test Pin Pull-Down Current Test Pin Pull-Down Current Test Mode Activation Threshold Test Mode Current Ratio I()/Iph() test mode active, I() = 200 A Turn-on Threshold VCC (power-on release) Turn-off Threshold VCC (power-down reset) Threshold Hysteresis increasing voltage at VCC decreasing voltage at VCC VCChys = VCCon - VCCoff 1.4 50 Vs()hi = VCC - V(LED); I() = -40 mA V() = 0 V VCC = 4.5...5.5 V, I() = 4mA, Tj = 70 C VCC = 4.5...5.5 V, I() = 4mA, Tj = 85 C VCC = 3.5...4.5 V, I() = 4mA V() = VCC Vs()hi = VCC - V(), I() = -4 mA; VCC = 4.5...5.5 V Vs()hi = VCC - V(), I() = -4 mA; VCC = 3.5...4.5 V V() = 0 V for A/B mode with x2 interpolation for A/B mode with x2 interpolation Vt1()hys = Vt1()hi - Vt1()lo for A/B mode for A/B mode Vt2()hys = Vt2()hi - Vt2()lo for analog mode SEL to GND, V(SEL) = VCC VCC to SEL, V(SEL) = 0 V Vpd() = V() - VCC/2; I() = 0...5 A Vpu() = V() - VCC/2; I() = -5...0 A test mode active test mode active, I() = 200 A test mode not active, V() = 0.4 V V() = VCC -0.5 10 1.25 60 0.7 80 1500 1.5 100 2 130 3000 2.6 2.4 170 300 600 1.75 160 3 190 5000 3.45 V V mV -70 78 68 8 28 18 8 45 70 70 80 70 10 30 20 10 50 100 100 7 Iph()p x Z()p > Iph()n x Z()n, resp. Iph()p x Z()p > internal VREF Iph()p x Z()p < Iph()n x Z()n, resp. Iph()p x Z()p < internal VREF Vt()hys = Vt()hi - Vt()lo 5 5 10 -40 0.25 -150 0.5 Typ. 12 12 24 Max. 25 25 50 0 1 -50 0.4 0.5 0.6 70 0.4 0.6 -7 82 72 12 32 22 12 55 140 140 0.5 mV mV mV mA V mA V V V mA V V mA %VCC %VCC %VCC %VCC %VCC %VCC %VCC k k V V A V A mA A Unit
Comparators 401 Vt()hi 402 403 501 502 503 601 602 603 604 605 606 607 701 702 703 704 705 706 707 708 709 710 711 801 802 803 804 805 806 901 902 903 Vt()lo Vt()hys Iop() Vs()hi Isc()hi Vs()lo Vs()lo Vs()lo Isc()lo Vs()hi Vs()hi Isc()hi Vt1()hi Vt1()lo Vt1()hys Vt2()hi Vt2()lo Vt2()hys V0() Rpd() Rpu() Vpd() Vpu() I()test V()test Ipd() Ipd() It()on CR() VCCon VCCoff VCChys
LED Power Control
Digital Outputs PA, NA, PB, NB, PZ, NZ, U, V, W
Selection Input SEL
Test Circuit Inputs TIP, TIN
Power-On-Reset Circuit
iC-PT 3324
preliminary
Rev A6, Page 8/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
Z INDEX SIGNAL
Figure 1: A-AND-B gated Z index signal at x1 interpolation (SEL = lo)
Figure 2: A-AND-B gated Z index signal at x2 interpolation (SEL = hi)
APPLICATION CIRCUITS For encoder circuit examples, refer to the data sheet of iC-PT3313, available separately.
iC-Haus expressly reserves the right to change its products and/or specifications. An info letter gives details as to any amendments and additions made to the relevant current specifications on our internet website www.ichaus.de/infoletter; this letter is generated automatically and shall be sent to registered users by email. Copying - even as an excerpt - is only permitted with iC-Haus' approval in writing and precise reference to source. iC-Haus does not warrant the accuracy, completeness or timeliness of the specification and does not assume liability for any errors or omissions in these materials. The data specified is intended solely for the purpose of product description. No representations or warranties, either express or implied, of merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information/specification or the products to which information refers and no guarantee with respect to compliance to the intended use is given. In particular, this also applies to the stated possible applications or areas of applications of the product. iC-Haus conveys no patent, copyright, mask work right or other trade mark right to this product. iC-Haus assumes no liability for any patent and/or other trade mark rights of a third party resulting from processing or handling of the product and/or any other use of the product. As a general rule our developments, IPs, principle circuitry and range of Integrated Circuits are suitable and specifically designed for appropriate use in technical applications, such as in devices, systems and any kind of technical equipment, in so far as they do not infringe existing patent rights. In principle the range of use is limitless in a technical sense and refers to the products listed in the inventory of goods compiled for the 2008 and following export trade statistics issued annually by the Bureau of Statistics in Wiesbaden, for example, or to any product in the product catalogue published for the 2007 and following exhibitions in Hanover (Hannover-Messe). We understand suitable application of our published designs to be state-of-the-art technology which can no longer be classed as inventive under the stipulations of patent law. Our explicit application notes are to be treated only as mere examples of the many possible and extremely advantageous uses our products can be put to.
iC-PT 3324
preliminary
Rev A6, Page 9/9
6-CH. PHASED ARRAY OPTO ENCODER (33-1024)
ORDERING INFORMATION
Type IC-PT3324
Package 32-pin optoQFN, 5 mm x 5 mm, 0.9 mm thickness
Options glass lid
Order Designation IC-PT3324 oQFN32-5x5
Encoder Disc 1024 PPR +3 PPR, OD/ID 33.2/13.0 mm, glass PT3S 33-1024
For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel.: +49 (61 35) 92 92-0 Fax: +49 (61 35) 92 92-192 Web: http://www.ichaus.com E-Mail: sales@ichaus.com
Appointed local distributors: http://www.ichaus.com/sales_partners

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