PT4S33-2000

IC-PT3320 ICHAUS | Alldatasheet

Document overview

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Technical content

6-CH. PHASED ARRAY OPTO ENCODER (33-2000) Rev A6, Page 1/9

FEATURES

♦ 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: PT4S 33-2000 (glass) OD ∅33.2 mm, ID ∅13.0 mm, optical radius 14.5 mm, 2000 ppr and 3 ppr commutation (120°)

APPLICATIONS

♦ Incremental encoder ♦ BLDC motor commutation PACKAGES optoQFN32 5 mm x 5 mm x 0.9 mm BLOCK DIAGRAM OUTPUT AND W PZ COMMUTATION QUADRATURE POWER-ON RESET INDEX NB NA LED POWER CONTROL iC-PT PB PA NZ U V OUTPUT COMPARATION SIGNAL 1 μ F +3.5..5.5V W V TIP TIN U LED PA NZ PZ NB PB NA SEL GND VCC 1 μ F Copyright © 2011 iC-Haus http://www.ichaus.com

6-CH. PHASED ARRAY OPTO ENCODER (33-2000) Rev A6, Page 2/9

DESCRIPTION

iC-PT 3320 is an optical sensor IC with integrated photosensors whose signals are converted into volt- ages by low-noise transimpedance amplifiers. Pre- cise 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 exter- nal resistor presets the photocurrent operating point and thus the desired illumination level. Selection input SEL chooses for three different op- erating 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 3320 provides differ- ential 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 gener- ate 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 ap- plied).

6-CH. PHASED ARRAY OPTO ENCODER (33-2000) Rev A6, Page 3/9 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) 9 10 11 12 13 14 15 16 2526272829303132 PIN FUNCTIONS No. Name Function 1 VCC +3.5..5.5 V Supply Voltage

2 LED LED Controller, High-Side Current

3 PA Push-Pull Output A+ / Test Sig. Sin+ 4 NA Push-Pull Output A- / Test Sig. Sin- 5 PB Push-Pull Output B+ / Test Sig. Cos+ 6 NB Push-Pull Output B- / Test Sig. Cos-

7 PZ Push-Pull Output Z+ / Test Signal Z+

8 NZ Push-Pull Output Z- / Test Signal Z-

9..16 n.c. 17 SEL Op. Mode Selection Input: lo = digital hi = x2 interpolated open = analog (alignment aid)

18 W Push-Pull Output W / Test Signal W

19 TIN Negative Test Current Input

20 V Push-Pull Output V / Test Signal V

21 TIP Positive Test Current Input

22 U Push-Pull Output U / Test Signal U

23 n.c.

24 GND Ground

25..32 n.c. BP Backside Paddle 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.

6-CH. PHASED ARRAY OPTO ENCODER (33-2000) Rev A6, Page 4/9 PACKAGE DIMENSIONS 1.90 3.24 TOP 0.90 0.30 SIDE 3.60 3.60 0.50 0.23 0.40 BOTTOM 3.60 3.60 0.50 0.30 4.90 4.90 R0.150.70 RECOMMENDED PCB-FOOTPRINT dra_pt33xx-oqfn32-2_pack_1, 10:1 Maximum molding excess +20 µm / -200 µm versus surface of glass. All dimensions given in mm.

6-CH. PHASED ARRAY OPTO ENCODER (33-2000) Rev A6, Page 5/9 ABSOLUTE MAXIMUM RATINGS These ratings do not imply operating conditions; functional operation is not guaranteed. Beyond these ratings device damage may occur. Item Symbol Parameter Conditions Unit No. Min. Max. G001 VCC Supply Voltage -0.3 6 V G002 I(VCC) Current in VCC -20 20 mA G003 V() Voltage at Output Pins PA, NA, PB, NB, PZ, NZ, U, V, W -0.3 VCC + 0.3 V G004 I() Current in Output Pins PA, NA, PB, NB, PZ, NZ, U, V, W -20 20 mA G005 V() Voltage at LED -0.3 VCC + 0.3 V G006 I() Current in LED -120 20 mA G007 V() Voltage at TIP , TIN, SEL -0.3 VCC + 0.3 V G008 I() Current in TIP , TIN, SEL -20 20 mA G009 Vd() ESD Susceptibility, all pins HBM, 100 pF discharged through 1.5 kΩ 2 kV G010 Tj Junction Temperature -40 150 °C G011 Ts Chip-Storage Temperature Range -40 150 °C THERMAL DATA Item Symbol Parameter Conditions Unit No. Min. Typ. Max. T01 Ta Operating Ambient Temperature Range (extended range on request) -40 85 °C T02 Ts Permissible Storage Temperature Range -40 85 °C T03 Tpk Soldering Peak Temperature tpk < 20 s, convection reflow 245 °C tpk < 20 s, vapor phase soldering 230 °C MSL 5A (max. floor live 24 h at 30 °C and 60 % RH); Please refer to customer information file No. 7 for details. 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.

6-CH. PHASED ARRAY OPTO ENCODER (33-2000) Rev A6, Page 6/9

ELECTRICAL CHARACTERISTICS

Item Symbol Parameter Conditions Unit No. Min. Typ. Max. Total Device 001 VCC Permissible Supply Voltage 3.5 5.5 V 002 I(VCC) Supply Current in VCC no load, photocurrents within op. range 3 10 mA 003 Vc()lo Clamp-Voltage lo at all pins I() = -4 mA, versus GND -1.2 -0.3 V

004 Vc()hi Clamp-Voltage hi at all pins I() = 4 mA 11 V

005 Vc()hi Clamp-Voltage hi at LED, PA, NA,

PB, NB, PZ, NZ, U, V, W I() = 4 mA, versus VCC 0.3 1.2 V

006 Vc()hi Clamp-Voltage hi at SEL, TIP ,

I() = 4 mA, versus VCC 0.7 2.2 V Photosensors 101 λar Spectral Application Range Se(λar) = 0.25 x S(λ)max 400 950 nm 102 λpk Peak Sensitivity Wavelength 680 nm 103 Aph() Radiant Sensitive Area PA, PB, NA, NB (sum of segments) 0.08 mm2 U, V, W (per segment) 0.125 mm2 PZ, NZ (sum of segments) 0.047 mm2 104 S(λr) Spectral Sensitivity λLED = 740 nm 0.5 A/W 105 S(λ)max Maximum Spectral Sensitivity λLED = λpk 0.55 A/W

106 E()mxpk Permissible Irradiance λLED = λpk, Vout() < Vout()mx;

PA, PB, NA, NB 2.2 mW/ cm2 U, V, W 1.1 mW/ cm2 PZ, NZ 2.9 mW/ cm2 Photocurrent Amplifiers

201 Iph() Permissible Photocurrent

202 η()r Photo Sensitivity (light-to-voltage conversion ratio) for PA, PB, NA, NB 0.1 0.3 0.5 V/µW for PZ, NZ, U, V, W 0.2 0.4 0.6 V/µW

203 Z() Equivalent Transimpedance Gain Z = Vout() / Iph(), Tj = 27 °C;

for PA, PB, NA, NB 0.56 0.75 1 MΩ for PZ, NZ, U, V, W 0.66 1.0 1.36 MΩ

204 TCz Temperature Coefficient of Tran-

-0.12 %/°C 205 ∆Z()pn Transimpedance Gain Matching SEL open, P vs. N path per diff. channel -0.2 0.2 % 206 ∆Vout() Dark Signal Matching of A, B SEL open, output vs. output -8 8 mV 207 ∆Vout() Dark Signal Matching of U, V, W SEL open, output vs. output -12 12 mV 208 ∆Vout() Dark Signal Matching of A, B, Z, U, V, W SEL open, any output vs. any output -24 24 mV 209 ∆Vout()pn Dark Signal Matching SEL open, P vs. N path per diff. channel -2.5 2.5 mV 211 fc()hi Cut-off Frequency (-3 dB) 400 kHz Analog Outputs PA, NA, PB, NB, PZ, NZ, U, V, W 301 Vout()mx Maximum Output Voltage illumination to E()mxpk 1.04 1.27 1.8 V 302 Vout()d Dark Signal Level load 100 kΩ vs. +2 V 640 770 985 mV 303 Vout()acmx Maximum Signal Level Vout()acmx = Vout()mx - Vout()d 0.3 0.5 0.75 V

304 Isc()hi Short-Circuit Current hi SEL open, load current to ground 100 1800 3000 µA

305 Isc()lo Short-Circuit Current lo SEL open, load current to IC 20 40 200 µA

306 Ri() Internal Output Resistance f = 1 kHz 250 750 2250 Ω

6-CH. PHASED ARRAY OPTO ENCODER (33-2000) Rev A6, Page 7/9 Item Symbol Parameter Conditions Unit No. Min. Typ. Max. Comparators

401 Vt()hi Upper Comparator Threshold Iph()p x Z()p > Iph()n x Z()n, 5 12 25 mV

resp. Iph()p x Z()p > internal VREF

402 Vt()lo Lower Comparator Threshold Iph()p x Z()p < Iph()n x Z()n, 5 12 25 mV

resp. Iph()p x Z()p < internal VREF

403 Vt()hys Comparator Hysteresis Vt()hys = Vt()hi - Vt()lo 10 24 50 mV

501 Iop() Permissible LED Output Current -40 0 mA

502 Vs()hi Saturation Voltage hi Vs()hi = VCC - V(LED); I() = -40 mA 0.25 0.5 1 V

503 Isc()hi Short-Circuit Current hi V() = 0 V -150 -50 mA

Digital Outputs PA, NA, PB, NB, PZ, NZ, U, V, W

604 Isc()lo Short-Circuit Current lo V() = VCC 7 70 mA

605 Vs()hi Saturation Voltage hi Vs()hi = VCC - V(), I() = -4 mA;

0.4 V

606 Vs()hi Saturation Voltage hi Vs()hi = VCC - V(), I() = -4 mA;

0.6 V

607 Isc()hi Short-Circuit Current hi V() = 0 V -70 -7 mA

701 Vt1()hi Upper Threshold Voltage hi for A/B mode with x2 interpolation 78 80 82 %VCC

702 Vt1()lo Upper Threshold Voltage lo for A/B mode with x2 interpolation 68 70 72 %VCC

703 Vt1()hys Upper Threshold Hysteresis Vt1()hys = Vt1()hi - Vt1()lo 8 10 12 %VCC

704 Vt2()hi Lower Threshold Voltage hi for A/B mode 28 30 32 %VCC

705 Vt2()lo Lower Threshold Voltage lo for A/B mode 18 20 22 %VCC

706 Vt2()hys Lower Threshold Hysteresis Vt2()hys = Vt2()hi - Vt2()lo 8 10 12 %VCC

707 V0() Pin-Open Voltage for analog mode 45 50 55 %VCC

708 Rpd() Pull-Down Resistor SEL to GND, V(SEL) = VCC 70 100 140 kΩ

709 Rpu() Pull-Up Resistor VCC to SEL, V(SEL) = 0 V 70 100 140 kΩ

Test Circuit Inputs TIP, TIN

801 I()test Permissible Test Current Range test mode active 10 600 µA

802 V()test Test Pin Voltage test mode active, I() = 200 µA 1.25 1.5 1.75 V 803 Ipd() Test Pin Pull-Down Current test mode not active, V() = 0.4 V 60 100 160 µA 804 Ipd() Test Pin Pull-Down Current V() = VCC 0.7 2 3 mA

805 It()on Test Mode Activation Threshold 80 130 190 µA

806 CR() Test Mode Current Ratio I()/Iph() test mode active, I() = 200 µA 1500 3000 5000

901 VCCon Turn-on Threshold VCC

(power-on release) increasing voltage at VCC 2.6 3.45 V

902 VCCoff Turn-off Threshold VCC

(power-down reset) decreasing voltage at VCC 1.4 2.4 V

903 VCChys Threshold Hysteresis VCChys = VCCon - VCCoff 50 170 300 mV

6-CH. PHASED ARRAY OPTO ENCODER (33-2000) Rev A6, Page 9/9

ORDERING INFORMATION

Type Package Options Order Designation iC-PT3320 32-pin optoQFN, 5 mm x 5 mm, 0.9 mm thickness glass lid iC-PT3320 oQFN32-5x5 Encoder Disc

2000 PPR +3 PPR,

OD/ID ∅33.2/13.0 mm, glass PT4S 33-2000 For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Tel.: +49 (61 35) 92 92-0 Am Kuemmerling 18 Fax: +49 (61 35) 92 92-192 D-55294 Bodenheim Web: http://www.ichaus.com GERMANY E-Mail: sales@ichaus.com Appointed local distributors: http://www.ichaus.com/sales_partners