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DISCRETE SEMICONDUCTORS
DATA SHEET
UZZ9001 Sensor Conditioning Electronic
Product specification Supersedes data of 2000 May 19 2000 Nov 27
Philips Semiconductors
Product specification
Sensor Conditioning Electronic
FEATURES * One chip angle sensor output signal conditioning * 180 angle range with KMZ41 * Accuracy better than 1 together with KMZ41 * Temperature range from -40 to +150 C * SPI protocol * SO24 package. GENERAL DESCRIPTION The UZZ9001 is an integrated circuit that combines two sinusoidal signals (sine and cosine) into one single linear output signal. These signals might come from the magnetoresistive sensor KMZ41. This results in a measurement system for angles up to 180. The integrated circuit UZZ9001 can also be used for all other applications in which an angle has to be calculated from a sine and cosine signal. A typical application would be any kind of resolver application. The two input signals are converted into the digital domain with two separate AD converters. A CORDIC algorithm performs the inverse tangent transformation. The output stage implements the Motorola Serial Peripheral Interface (SPI) protocol. PINNING SYMBOL +VO2 +VO1 VDD2 VSS GND RST TEST1 TEST2 DATA_CLK SMODE TEST3 data CLK CS OFFS2 OFFS1 VDDA GND TEST4 TEST5 VDD1 Tout -VO2 -VO1 Notes 1. Connected to ground. 2. Pin to be left unconnected. QUICK REFERENCE DATA SYMBOL VDDA VDD1 VDD2 ICCtot Res A Idata-out Note 1. VDDA, VDD1 and VDD2 must be connected to the same supply voltage. 2000 Nov 27 2 PARAMETER supply voltage supply voltage supply voltage total supply current resolution accuracy peak output current with ideal input signal note 1 note 1 note 1 no output load CONDITIONS MIN. 4.5 4.5 4.5 - - 0.35 - 5 5 5 5 13 - - TYP. PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
UZZ9001
DESCRIPTION sensor 2 positive differential input sensor 1 positive differential input digital supply voltage digital ground analog ground reset of the digital part; note 1 for production test; note 1 note 2 trim-mode data-clock; note 1 serial mode programmer; note 1 note 2 SPI data output SPI data clock in SPI chip select offset trimming input sensor 2 offset trimming input sensor 1 analog supply voltage analog ground for production test; note 1 for production test; note 1 digital supply voltage test output sensor 2 negative differential input sensor 1 negative differential input
MAX. 5.5 5.5 5.5 15 - - 10 V V V
UNIT
mA bit deg mA
Philips Semiconductors
Product specification
Sensor Conditioning Electronic
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). SYMBOL VDDA VDD1 VDD2 Vpin Tstg Tamb PARAMETER supply voltage supply voltage supply voltage voltage at all pins storage temperature operating temperature 125 to 150 C; max 200 hours CONDITIONS MIN. -0.3 -0.3 -0.3 -0.3 -55 -40
UZZ9001
MAX. +6 +6 +6 VDD +150 +150
UNIT V V V V C C
THERMAL CHARACTERISTICS SYMBOL Rth j-a PARAMETER thermal resistance from junction to ambient VALUE 80 UNIT K/W
ESD SENSITIVITY SYMBOL ESD PARAMETER ESD sensitivity CONDITIONS human body model machine model VALUE 2 150 UNIT kV V
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
UZZ9001
ELECTRICAL CHARACTERISTICS Tamb = -40 to +150 C; VDD = 4.5 to 5.5 V; typical characteristics for Tamb = 25 C and VDD = 5 V unless otherwise specified. SYMBOL VDDA VDD1 VDD2 IDD (+VO)-(-VO) PARAMETER supply voltage supply voltage supply voltage supply current differential input voltage common mode range lost magnet threshold fext fint Io Vreset external clock frequency internal clock frequency data output switching voltage threshold hysteresis A Res ton tr VID VOD VLM accuracy resolution power up time response time digital input voltage digital output voltage sensor voltage to 95% of final value LO signal HI signal LO signal HI signal lost magnet threshold with ideal input signal constant current peak current between falling and rising VDD without load referred to VDD referred to VDD referred to VDD for trim interface CONDITIONS MIN. 4.5 4.5 4.5 - 6.6 490 - 0.1 2.3 - - 2.8 - 0.35 - - - 0 0.7 x VDD - VDD -0.8 12 5 5 5 5 - - 3 - 4 - - - 0.3 - 13 - 0.7 - - - - 15 TYP. MAX. 5.5 5.5 5.5 15 28 510 - 1 5.7 1 10 4.5 - - - 20 1.2 0.3 x VDD VDD 0.4 - 20 V V V mA mV/V mV/V mV/V MHz MHz mA mA V V degree bit ms ms V V V V mV UNIT
FUNCTIONAL DESCRIPTION The UZZ9001 is a mixed signal IC for angle measurement systems. It combines two analog signals (sine and cosine) into a linear output signal. The output stage implements the Motorola Serial Peripheral Interface (SPI) protocol. The UZZ9001 has been designed for use with the double sensor KMZ41. The analog measurement signals on the IC input are converted to digital data with two ADC's. The ADC's are a Sigma-Delta modulator employing a 4th order continuous time architecture with an over-sampling ratio of 128 to achieve high resolution. The converter output is a digital bitstream with an over-sampling frequency of typically 500 kHz.
The bitstream is fed into a decimation filter which performs both low pass filtering and down-sampling. The IC has two input channels each of which has its own ADC and decimation filter. The two decimation filter outputs are 15-bit digital words at a lower frequency of typically 3.9 kHz which is the typical sampling frequency of the sensor system. The digital representations of the two signals are then used to calculate the current angle. This calculation is carried out using the so-called CORDIC algorithm. The angle is represented with a 13-bit resolution. An SPI compatible interface converts the output word to the serial peripheral interface protocol.
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
UZZ9001
handbook, full pagewidth
+VO1 -VO1
ADC1
DECIMATION FILTER
ALU
SPI
data CLK CS
+VO2 -VO2
ADC2
DECIMATION FILTER
DATA-CLK CONTROL RESET
UZZ9001
OSCILLATOR
SMODE
MHB698
reset
Fig.1 Block diagram.
The following list gives a short description of the relevant block functions: 1. The ADC block contains two Sigma Delta AD converters, sensor offset correction circuitry and the circuitry required for the sensitivity and offset adjustment of the chip output voltage curve. 2. Two digital low pass decimation filters convert the low resolution high speed bit stream coming from the ADC Sigma Delta converters into a low speed digital word. 3. The ALU block derives an angle value from the two digital inputs using the CORDIC algorithm. 4. The SPI converts the output of the ALU block to a SPI compatible 16 bit word. 5. The CONTROL block provides the clock and the control signals for the chip. 6. The RESET block supplies a reset signal during power-up and power-down when the power supply is below a certain value. 7. The Oscillator unit generates the master clock.
Serial Peripheral interface (SPI) The UZZ9001 provides an interface to SPI compatible devices, and as a slave node functions in one operational mode only. For Motorola SPI devices, this mode is selected by setting CPHA to 1 and CPOL to 1. In this transfer mode, data bits are sampled by the master using the leading edge of the clock as shown in Figure 2. The falling edge indicates that the next data bit has to be provided by the slave device (shift operation). An advantage of this mode is that the CS input toggles only once between every two sensor data bytes (see Fig.3). Data transmission can be stopped by the user at any time. The leading edge of the CS input initialises the SPI shift register allowing the start of a complete new transmission. If the CS line is held active low during stop of transmission, resumption of transmission can be made without loss of data
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
UZZ9001
handbook, full pagewidth
CS
1 2 5 CLK 10 8 DATA note1 MSB-OUT Bits 6-1 LSB-OUT
MHB699
3
4
9
10
11
(1) Not defined data, normally LSB of character previously transmitted.
Fig.2 UZZ9001 SPI timing.
Table 1
SPI-Timing PARAMETER cycle time enable lead time enable lag time clock high time clock low time access time disable time data valid time (after clock edge) SYMBOL tcyc tlead tlag tclk_high tclk_low tacc tdis tv 1 15 15 100 100 0 - - 5 - 1.2 MIN. - - - - - 20 25 40 - 1 - MAX. UNIT s ns ns ns ns ns ns ns ns MHz s determined by master module determined by master module determined by master module determined by master module time to data active from fixed VSS state hold time to fixed VSS state with 100 pF on all SPI pins REMARKS/TEST CONDITIONS
DIAGRAM NUMBER 1 2 3 4 5 8 9 10 11
data hold time th (output, after clock edge) operating frequency transmission delay (time between the leading edge of CS until the next falling edge) fop tdelay
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
UZZ9001
handbook, full pagewidth
DATA
sensor byte 2
sensor byte 1
CS
MHB700
Fig.3 CS Line timing.
Sensor signal coding The sensor signal comprises 14 bits (D13 to D0) as shown in Fig.4. Bits D12 to D0 are used for the coding of the angle while D0 is reserved to indicate error and diagnostic conditions as defined below. The 14 data bits are arranged in 2 Bytes. D13 is the MSB of the sensor signal and D0 is the LSB of the sensor signal. Byte 2, which is sent first, contains data bits D13 to D7 and additionally the parity bit P2 which is included for the recognition of interrupted messages. P2 gives the ODD parity of data bits D13 to D7 and has to be evaluated by the master module.Similarly, Byte 1 comprises data bits D6 to D0 and parity bit P1, which gives the ODD parity of data bits D6 to D0. The internal coding of angle values is as follows:
The error and diagnostic conditions are indicated by D13 = 1 (active high). In an error situation the last two bits (D0 and D1) specify the error code (see Table 2). All other bits (D3 to D12) still show the current measurement value, but as the last two bits are lost for measurement representation the resolution is reduced to 11 bit. Table 2 D1 0 0 1 1 D0 0 1 0 1 Error and diagnostic cases coding CASE MEASUREMENT VALUE RELIABLE
no valid value presently no available due to RESET magnet lost reserved reserved no - -
00 0000 0000 0000B = 01 1111 1111 1111B = D13 DO
0, 180 180 - 1 ) ------------ 179.978 13 2
(2
13
During normal operation, bit D13 is active low. Each increment represents an angle value 180 of: inc = ------------ 0.022 13 2
handbook, full pagewidth
sensor byte 2 P2 D13 D12 D11 D10 D9 MSB D8 D7 P1 D6
sensor byte 1 D5 D4 D3 D2 D1 D0 LSB
MHB701
Fig.4 Sensor signal coding.
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
Magnet lost condition If both offset corrected input signal of sensor 1 and sensor 2 are below the lost magnet threshold then the failure `Magnet lost' is assumed. Offset trimming To achieve a linear output characteristic, it is necessary to shift the offsets of the two input signals to the input stage of the UZZ9001. For this reason a sensor offset cancellation procedure has been implemented in the UZZ9001 which is started by sending a special serial data protocol to the UZZ9001. This trimming procedure is required for both input signals. Trim interface
UZZ9001
The UZZ9001 trim mode serial interface consists of the two terminals SMODE (pin 10) and DATA_CLK (pin 9). The structure of this protocol is shown in Figure 5. All signal levels of DATA_CLK and SMODE must lie within the ranges set out in Table 3. The protocol starts with a falling edge at the SMODE, which must occur at a high DATA_CLK level. The following five bits are used to code the message sent to the UZZ9001. They are transferred via the SMODE and are sampled with the rising edge of the DATA_CLK. During the fifth high level output of DATA_CLK (counted from the start condition onwards), a rising edge must appear at the SMODE and the DATA_CLK follows this with one more change to low level in order to successfully complete the protocol.
handbook, full pagewidth start
condition 1 DATA_CLK (input at pin 9) 2
statusbit # 3 4 5
stop condition
SMODE (input at pin 10) T1 TOUT (output at pin 22) T0
MHB702
Fig.5 Protocol used to set UZZ9001 into trim mode.
Table 3
Definition of the trim interface signals PARAMETER MIN. 0 95 8 0.1 MAX. 5 100 - 1 UNIT %VDD %VDD ns MHz
low level of DATA_CLK, SMODE high level of DATA_CLK, SMODE rise and fall time of DATA_CLK and SMODE signal edges (10 to 90% VDD) and (90 to 10% VDD) DATA_CLK frequency
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
Table 4 Programming of trim modes STATUS BITS MODE 1 enter trim mode for sensor input channel 1 enter trim mode for sensor input channel 2 leave trim mode for either input channel How to enter the trim mode Details of voltage levels and timing of the status bits to be transmitted to the UZZ9001 are given in Table 3. Note that a complete protocol has to be sent before normal operation can be resumed. The trim mode can also be exited by resetting the device. After entering one of the trim modes and provided there is a dynamic input signal there will be a square wave output at the terminal TOUT (pin 22). Reset In addition to the external reset pin (pin 6), the UZZ9001 provides an internal power-up/ power-down reset logic which continuously monitors the supply voltage. When the supply voltage increases and reaches a safe level, reset becomes inactive and the device starts initialization. When the supply voltage exceeds the safe voltage level, the device is reset immediately. This internal reset logic can be over-ridden in all modes and at any time by applying an external active high command to the RES input pin (pin 6) in all modes and at any time. The reset pin RES (pin 6). This pin is internally pulled to ground and therefore need not be connected if the function is not required. 0 0 0 2 0 0 0 3 0 1 0 4 1 0 0
UZZ9001
5 0 0 0
Measurement dynamics The UZZ9001 includes an on-chip RC Oscillator that generates the clock for the whole device. Consequently, no external clock supply is required for the measurement system. The nominal clock frequency of the on-chip oscillator is 4 MHz at room temperature. It varies with temperature change. At -40 C the clock frequency may decrease to 2.3 MHz. At higher temperatures however, a frequency up to 5.7 MHz may occur. This influences the dynamics of measurements. From an application point of view, two different effects have to be distinguished. The system delay, which means how long it takes until a changed input signal is recognized at the output, and the measurement update rate. The system delay is mainly caused by the settling time of the low pass decimation filter, which depends on the maximum frequency content (shape) of the input signals and the clock frequency. The following maximum values can be expected for the entire system delay. The measurement update rate, however, is directly related to the oscillator frequency. At room temperature, a new value is available every 0.26 ms. When taking the entire temperature range into account, update rates between 0.45 and 0.18 ms are possible. (see Table 5)
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
Table 5 System delay and update rates of the UZZ9001 PARAMETER System delay (time elapsed until 95% of the final value is reached) max. signal frequency < 200 MHz transients (step response) Measurement update rate -40 C +25 C (room temperature) +150 C APPLICATION INFORMATION 0.45 - - - 0.26 - - - 0.18 - - - - 0.6 1.2 MIN. TYP. MAX.
UZZ9001
UNIT ms ms ms ms ms
handbook, full pagewidth
C1 100 nF +VO2 1 2 3 4 5 6 1 5
(1)
KMZ41 VDD
3, 4 2 6
+VO1 VSS
24 23 22 21 20
-VO1 -VO2
(1)
1 2 3 1 2 3 CS (chip select) CLK (clock in) data out ground
MHB703
OFFS1
7 8 9
UZZ9001
19 18 17 16 15 14 13
OFFS2
7, 8 GND
(1)
10 11 12
SPI in/out
(1) For test applications pin to be left unconnected.
Fig.6 UZZ9001 trim mode configuration.
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
PACKAGE OUTLINE SO24: plastic small outline package; 24 leads; body width 7.5 mm
UZZ9001
SOT137-1
D
E
A X
c y HE vMA
Z 24 13
Q A2 A1 pin 1 index Lp L 1 e bp 12 wM detail X (A 3) A
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 2.65 0.10 A1 0.30 0.10 A2 2.45 2.25 A3 0.25 0.01 bp 0.49 0.36 c 0.32 0.23 D (1) 15.6 15.2 0.61 0.60 E (1) 7.6 7.4 0.30 0.29 e 1.27 0.050 HE 10.65 10.00 L 1.4 Lp 1.1 0.4 Q 1.1 1.0 0.043 0.039 v 0.25 0.01 w 0.25 0.01 y 0.1 0.004 Z
(1)
0.9 0.4 0.035 0.016
0.012 0.096 0.004 0.089
0.019 0.013 0.014 0.009
0.419 0.043 0.055 0.394 0.016
8o 0o
Note 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. OUTLINE VERSION SOT137-1 REFERENCES IEC 075E05 JEDEC MS-013 EIAJ EUROPEAN PROJECTION
ISSUE DATE 97-05-22 99-12-27
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
DATA SHEET STATUS DATA SHEET STATUS Objective specification PRODUCT STATUS Development DEFINITIONS (1)
UZZ9001
This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.
Preliminary specification
Qualification
Product specification
Production
Note 1. Please consult the most recently issued data sheet before initiating or completing a design. DEFINITIONS Short-form specification The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. DISCLAIMERS Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
NOTES
UZZ9001
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
NOTES
UZZ9001
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
NOTES
UZZ9001
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SCA 70
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Printed in The Netherlands
613520/02/pp16
Date of release: 2000
Nov 27
Document order number:
9397 750 07784

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