IC-LSHB [ICHAUS]
INCREMENTAL PHOTOSENSOR ARRAY; 增量式光传感器阵列
| 型号： | IC-LSHB |
| 厂家： | 
IC-HAUS GMBH |
| 描述： | INCREMENTAL PHOTOSENSOR ARRAY |
| 文件： | 总8页 (文件大小：292K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
iC-LSHB
INCREMENTAL PHOTOSENSOR ARRAY
Rev B1, Page 1/8
FEATURES
APPLICATIONS
♦ Incremental rotary encoders
♦ Linear scales
♦ Monolithic array of independent photosensors with excellent
matching
♦ Compact photosensor size of 800 µm x 330 µm enabling
smaller encoder systems
♦ Moderate track pitch for reasonable alignment tolerances
♦ Ultra low dark currents for operation to high temperature
♦ Low noise amplifiers with high transimpedance of typ. 4 MΩ
♦ Short-circuit-proof, low impedance voltage outputs for
enhanced EMI tolerance
♦ Space saving 15-pin optoBGA package (RoHS compatible)
♦ Low power consumption from single 4.5 V to 5.5 V supply
♦ Operational temperature range of -40 to 125 °C
♦ Available options
PACKAGES
- reticle assembly, code discs
- customized COB modules
15-pin optoBGA
Chip
6.2 mm x 5.2 mm
2.88 mm x 2.04 mm
BLOCK DIAGRAM
VCC
DPZ
DPSIN
-
-
PZ
PSIN
NSIN
+
+
DPSIN
DPCOS
DNSIN
DNSIN
-
DNZ
+
-
DNCOS
+
DPCOS
-
PCOS
NCOS
+
DPZ
DNZ
-
NZ
+
DNCOS
-
REFERENCE
VOLTAGE
+
GND
iC-LSHB
Copyright © 2009 iC-Haus
http://www.ichaus.com
iC-LSHB
INCREMENTAL PHOTOSENSOR ARRAY
Rev B1, Page 2/8
DESCRIPTION
iC-LSHB is an optical sensor IC with 6 integrated infrared light, with the maximum sensitivity close to a
photodiodes whose signal currents are converted wavelength of 680 nm.
into output voltages by low-noise transimpedance
amplifiers.
Due to a high transimpedance gain of typically 4 MΩ,
signal voltages of several hundred millivolts are ob-
The IC is well suited for the operation of interpolation tained at low illumination levels. An output signal
circuits for linear or rotary incremental encoders with amplitude of 1 V is typical in low light conditions,
an index signal. iC-LSHB thus has a shamrock-style for instance when iC-LSHB is illuminated at only
sensor layout of four photodiodes, each with an ac- 0.2 mW/cm2 by a 740 nm LED.
tive area of 800 µm x 330 µm. Both a positive and
negative sine signal and a positive and negative co- A threefold intensity is sufficient when using iC-LSHB
sine signal are generated from a single shared code for encoder applications with typical disc and mask
track. The signal amplifier layout ensures excellent codes. Therefore, a relatively low LED current is
paired channel matching, reducing signal differences enough to operate the sensor, proving beneficial to
to an absolute minimum.
the life expectancy of the LED at high operating tem-
peratures.
Two separate photodiodes, with active areas of 1720
µm x 150 µm apiece, are employed for the differential iC-LSHB is suitable for on-chip or LED-end mounting
scanning of the index track and to generate the zero of the grating (reticle), so that the period count, signal
signal.
waveform, phase shift and index marker code can be
selected with flexibility.
The spectral sensitivity ranges from visible to near
PACKAGES
PAD LAYOUT (2.88 mm x 2.04 mm)
PAD FUNCTIONS
No. Name Function
1 VCC +4.5..5.5 V Supply Voltage
2 PZ
3 NZ
Zero Signal (Index)
Reference Voltage Output
4 GND Ground
5 NCOS Cosine -
6 PCOS Cosine +
7 NSIN Sine -
8 PSIN Sine +
Notes: All outputs supply analog volt-
ages.
Dimension G4 is the reference radius of
the chip center.
iC-LSHB
INCREMENTAL PHOTOSENSOR ARRAY
Rev B1, Page 3/8
PIN CONFIGURATION
PIN FUNCTIONS
oBGA LSH2C (6.2 mm x 5.2 mm)
No. Name Function
A2
A3
A4
B1
B2
B3
B4
C1 NCOS Cosine -
C2 PCOS Cosine +
C3 NZ
Reference Voltage Output
C4 GND Ground
D1 NSIN Sine -
D2 PSIN Sine +
D3 VCC +4.5..5.5 V Supply Voltage
D4 PZ Zero Signal (Index)
iC-LSHB
INCREMENTAL PHOTOSENSOR ARRAY
Rev B1, Page 4/8
ABSOLUTE MAXIMUM RATINGS
These ratings do not imply operating conditions; functional operation is not guaranteed. Beyond these ratings device damage may occur.
Item Symbol
No.
Parameter
Conditions
Unit
Min.
-0.3
-20
Max.
6
G001 VCC
G002 I(VCC)
G003 V()
Voltage at VCC
V
mA
V
Current in VCC
20
Pin Voltage, all signal outputs
-0.3
VCC +
0.3
G004 I()
G005 Vd()
G006 Tj
G007 Ts
Pin Current, all signal outputs
ESD Susceptibility, all pins
Junction Temperature
-20
20
2
mA
kV
°C
°C
HBM, 100 pF discharged through 1.5 kΩ
-40
-40
150
150
Chip Storage Temperature
THERMAL DATA
Item Symbol
No.
Parameter
Conditions
Unit
Min. Typ. Max.
T01 Ta
T02 Ts
T03 Tpk
Operating Ambient Temperature Range package oBGA LSH2C
-40
-40
125
125
°C
°C
Storage Temperature Range
Soldering Peak Temperature
package oBGA LSH2C
package oBGA LSH2C
tpk < 20 s, convection reflow
tpk < 20 s, vapor phase soldering
245
230
°C
°C
TOL (time on label) 8 h;
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.
iC-LSHB
INCREMENTAL PHOTOSENSOR ARRAY
Rev B1, Page 5/8
ELECTRICAL CHARACTERISTICS
Operating conditions: VCC = 4.5..5.5 V, Tj = -40..125 °C, unless otherwise stated
Item Symbol
No.
Parameter
Conditions
Unit
Min.
Typ.
Max.
Total Device
001 VCC
Permissible Supply Voltage
Supply Current in VCC
4.5
5.5
12
V
002 I(VCC)
no output load, photocurrents within linear op-
erating range (no override)
6.5
mA
003 Vc()hi
004 Vc()lo
Photosensors
101 λar
102 λpk
103 Aph()
Clamp-Voltage hi at all pins
Clamp-Voltage lo at all pins
I() = 4 mA
I() = -4 mA
11
V
V
-1.2
400
-0.3
Spectral Application Range
Peak Sensitivity Wavelength
Se(λar) = 0.25 x S(λ)max
950
nm
nm
mm2
680
Radiant Sensitive Area of DPSIN, 0.8 mm x 0.33 mm
DPCOS, DNSIN, DNCOS
0.264
104 Aph()
Radiant Sensitive Area of DPZ, 1.72 mm x 0.15 mm
DNZ
0.258
mm2
105 S(λr)
106 S(λ)max
107 E()mx
Spectral Sensitivity
λLED = 740 nm
λr = λpk
0.5
0.55
0.5
A/W
A/W
Maximum Spectral Sensitivity
Irradiance For Maximum Signal λLED = 740 nm, Vout() not yet saturated
Level
0.15
0.8
mW/
cm2
Photocurrent Amplifiers
201 Iph()
Permissible Photocurrent
Operating Range
0
280
2.0
nA
202 η()r
Photo Sensitivity
(light-to-voltage conversion ratio)
λLED = 740 nm
0.8
1.2
V/µW
203 Z()
Equivalent Transimpedance Gain Z = Vout() / Iph()
2.69
4.0
5.46
MΩ
204 TCz
Temperature Coefficient of
Transimpedance Gain
-0.12
%/°C
209 ∆Z()pn
Transimpedance Gain Matching P.. channel vs. corresponding N.. channel
Of Paired Amplifiers
-0.2
0.2
%
210 ∆Vout()pn Signal Matching
211 ∆Vout()pn Signal Matching
no illumination, any output vs. any output
-35
35
mV
mV
no illumination, P.. output vs. corresponding N..
output
-2.5
2.5
212 fc()hi
Cut-off Frequency (-3 dB)
RMS Output Noise
120
180
0.5
280
kHz
mV
213 VNoise()
illuminated to 500 mV signal level above dark
level, 500 kHz band width
Signal Outputs PSIN, NSIN, PCOS, NCOS, PZ
301 Vout()mx Permissible Maximum Output
Voltage
illumination to E()mxr, linear gain
2.45
2.72
3.02
V
302 Vout()d
Dark Signal Level
no illumination, load 20 kΩ vs. +2 V
Vout()acmx = Vout()mx - Vout()d
load current to ground
load current to IC
600
1.48
100
250
70
770
1.96
420
480
110
1000
2.35
800
700
180
mV
V
303 Vout()acmx Maximum Signal Level
304 Isc()hi
305 Isc()lo
306 Ri()
Short-circuit Current hi
Short-circuit Current lo
Internal Output Resistance
µA
µA
Ω
f = 1 kHz
Reference Voltage NZ
401 VREF
402 dVout()
403 Isc()hi
404 Isc()lo
Reference Voltage
I(VREF) = 0...+1.6 mA
I(VREF) = 0...+1.6 mA
load current to ground
load current to IC
600
-10
200
2
770
1000
+10
800
10
mV
mV
µA
Load Balancing
Short-circuit Current hi
Short-circuit Current lo
420
4.5
mA
iC-LSHB
INCREMENTAL PHOTOSENSOR ARRAY
Rev B1, Page 6/8
APPLICATION HINTS
Figure 1: Example of incremental encoder with RS422 output
Figure 2: Example of sine encoder with 1 Vpp output
iC-LSHB
INCREMENTAL PHOTOSENSOR ARRAY
Rev B1, Page 7/8
iC-Haus expressly reserves the right to change its products and/or specifications. An Infoletter 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 on this site and does not assume liability for any errors or omissions
in the 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-LSHB
INCREMENTAL PHOTOSENSOR ARRAY
Rev B1, Page 8/8
ORDERING INFORMATION
Type
Package
Options
Order Designation
iC-LSHB
-
iC-LSHB chip
optoBGA 6.2 mm x 5.2 mm
optoBGA 6.2 mm x 5.2 mm
optoBGA 6.2 mm x 5.2 mm
-
iC-LSHB OBGA LSH2C
iC-LSHB OBGA LSH2C-2R
iC-LSHB OBGA LSH2C-4R
reticle 42-1024
reticle 42-4096
Code Disc 1024 PPR,
OD/ID ∅42/18 mm, glass
LSHB2S 42-1024
LSHB4S 42-4096
Code Disc 4096 PPR,
OD/ID ∅42/18 mm, glass
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
D-55294 Bodenheim
GERMANY
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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