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EM6415
Absolute Maximum Ratings Parameter Supply Voltage Voltage at remaining pins Storage temperature Operating temperature Soldering Temperature*Time Symbol VDD VPIN Tstore Top TSMAX Min -0.3 VSS-0.3 -55 -40 Max 5.5 VDD+0.3 150 +85 25010 Unit V V C C Cs Stresses above these listed maximum ratings may cause permanent damages to the device. Exposure beyond specified operating conditions may affect device reliability or cause malfunction. Handling Procedures This device has built-in protection against high static voltages or electric fields; however, anti-static precautions must be taken as for any other CMOS component. Unless otherwise specified, proper operation can only occur when all terminal voltages are kept within the voltage range. Unused inputs must always be tied to a defined logic voltage level.
Electrical Characteristics Operating Conditions (unless othewise specified) Positive supply VDD VSS Negative supply T Ambient temperature Sensor resistance RSEN Power Supply Parameter Operating Voltage Range Current Consumption Symbol VDD IDD1 IDD2
= = = =
3.0V 0V 25C 300 to 10K
Conditions T = -20C to 70C CE =VDD at standby CE =VSS at A/D conversion fADOSC=800kHz
Min. 2.2
Typ. 3.0 0.2
Max. 3.6 1.0 300
Unit V A A
100
240
Programmable Internal Oscillator Parameter Frequency Frequency Step Size Stability Against Supply Voltage Variations Stability Against Temperature Variations Symbol fADOSC fADOSC f/fVDD f/T 2.2V< VDD <3.0V -20CCopyright 2002, EM Microelectronic-Marin SA
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EM6415
Sensor
Parameter Sensor Drive Current Symbol ISDRV Conditions R RSEN1=1.0k , RSEN=4.0k, Program step 0 Mode S RRSEN1=1.0k , RSEN=4.0k, Program step 15 Mode S Sensor Drive Current per Step Sensor Drive Current vs Voltage Deviation Sensor Bridge Resistance1 Sensor Bridge Resistance2 RSEN1 Resistance RSEN2 Resistance ISDRV /stp ISDRV/V RSEN1 RSEN2 RRSEN1 RRSEN2 RRSEN1=1.0k , RSEN=4.0k RRSEN1=1.0k , RSEN=4.0k 2.2V < VDD < 3.0V RRSEN1=1.3k , ISDRV =200A RRSEN2=510 , ISDRV=500A Min. 276 Typ. 300 Max. 324 Unit A
468
510
552
A
10 50 2.7 1.0 0.3 0.3
15 200 3.7 1.5
20 300 4.2 2.0 2.5 2.5
A/stp ppm k k k k
A/D Converter
Parameter Input Voltage Range FS Resolution Integral Nonlinearity Differential Nonlinearity Conversion Time Offset Adjust Range FS Fine Ajust Range Symbol VSENS RESADC INLADC DNLADC TCONVAD VOFFAD VFSFAD 12 bit FS fine adjust Conditions CH1,2,3,4H-CH1,2,3,4L To resolve 14 bits ADC fADOSC=800kHz fADOSC=800kHz fADOSC=800kHz fADOSC=500kHz, 14bit -60 -12.5 Min. 16 14 4 3 110 40 +60 +12.5 Typ. Max. 200 Unit mV Bits LSB LSB ms mV %FS
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EM6415
DC Characteristics
Parameter Symbol Conditions Min. Typ. Max Unit
Input Low Voltage Input High Voltage Input Low Current Input High Current
VIL VIH IIL IIH
ALE , RD , WR , CE , CLKP, CLKSEL, D0-D3 ALE , RD , WR , CE , CLKP, CLKSEL, D0-D3 ALE , RD , WR , CE , CLKP, CLKSEL, D0-D3 ALE , RD , WR , CE , CLKP, CLKSEL, D0 - D3
0.2 VDD 0.8VDD -20 1 1 20
V V nA nA
Output Low Voltage Output High Voltage
VOL VOH
IOL = 2mA, D0 -D3 IOH = -1mA, D0 -D3 2.4
0.1 2.95
0.4
V V
Timing Characteristics
Data Write cycle
VDD = 3.0V, VSS = 0V, T = 25 C, VOH = 0.8VDD, VOL = 0.2VDD Item Symbol Address Set-up Time Twas Address Hold Time Twah Data Set-up Time Twds Data Hold Time Twdh
ALE Pulse Width WR Pulse Width
Min. 20 30 20 30 60 60
Typ. 25 35 25 35 65 65
Max. -
Unit ns ns ns ns ns ns
Twap Twwp
ALE
VOH VOL twap
WR
twas VOH twah Address VOL
VOH VOL twds
twdp Data
twdh VOH VOL
Fig. 3
D0-D3
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EM6415
Data Read cycle VDD = 3.0V, VSS = 0V, T = 25 C, VOH = 0.8VDD, VOL = 0.2VDD Item Symbol Min. Address Set-up Time Address Hold Time Data Set-up Time Data Hold Time
ALE Pulse Width RD Pulse Width
Typ. 45 25 25 65 65
Max. -
Unit ns ns ns ns ns ns
Tras Trah Trds Trdh Trap Trrp
100 40 20 20 60 60
Timing Waveforms
ALE
VOH VOL tras trah trdp trds VOH trdh Data
VOH VOL
RD
VOH VOL
D0-D3
Address VOL
VOH VOL
Fig. 4
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EM6415
Functional Description EM6415 comprises a four channel analog multiplexer followed by a fixed gain amplifier followed by the integrator of the dual slope converter, a bandgap voltage reference, RC oscillator, power on/off detector. The sensor is supplied directly by a programmable current source. In order to minimize noise, the analog and digital circuits internal to EM6415 use separate power supplies. These power buses are brought out to separate pins and should be tied together as close as possible to the device. In addition, the output of the internal bandgap voltage reference is brought to the pin VREF, which could allow the connection of an external capacitor to VSS, if the output stability is not enough to resolve 1V/bit ADC. Programming Procedure Nibble organization and Bit order: Bit 3 2 1 0 Order high low
Latch Address (LAD) and Functions
LAD 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Function FS fine adjust FS fine adjust FS fine adjust OS rough adjust OS rough adjust FS rough adjust FS rough adjust Bridge current ADC status & ADC output AD0, AD1 ADC output AD2-AD5 ADC output AD6-AD9 & T0-T3 ADC output AD10-AD13 & T4-T7 ADC resolution (10, 13, 14) Perform ADC conversion (T, R, S, P) Select Sensor-Port (1,2,3,4) & RSEN (1,2) don't use Bits D0-D3 0-3 4-7 8-11 0-3 4-7 0-3 4-7 0-3 0-3 2-5 6-9 10-13 0-3 0-3 0-3 WR/RD WR WR WR WR WR WR WR WR RD RD RD RD WR WR WR Note
(note 1) (note 2) (note 2) (note 2) (note 3) (note 4) (note 5)
Note 1: ADC Status & AD0, AD1 (LAD=8) Bit Function Note D0 CC Conversion complete = 1 D1 COVFL Conversion overflow = 1 D2 AD0 ADC Bit 0 D3 AD1 ADC Bit 1 Note 2: ADC read out Latch Address Buffer Bit ADC Bits Sensor AD-14 Sensor AD-13 Sens/Pow AD10 Top of B AD10
11 3 13 12 9 9 2 12 11 8 8 1 11 10 7 7 0 10 9 6 6 3 9 8 5 5 2 8 7 4 4
10 1 7 6 3 3 0 6 5 2 2 3 5 4 1 1 2 4 3 0 0
9 1 3 2 0 2 1 3 1 0 -
8 2 0 -
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EM6415
Note 3: ADC resolution & frequency select (LAD 12) Bit Select Function D1, D0 00 clock 500kHz 01 clock 600kHz 10 clock 700kHz 11 clock 800kHz D3, D2 00 10 Bit ADC 01 13 Bit ADC 10 13 Bit ADC 11 14 Bit ADC Note 4: ADC conversion select (LAD=13) Bit Select Function D1, D0 don't use D3, D2 00 (T) top of sensor bridge with ISDRV /2 01 (R) A/D ramp height 10 (S) sensor bridge signal ISDRV 11 (P) power supply voltage Note 5: ADC conversion select (LAD=14) Bit Select Function D0 0 RSENS1 1 RSENS2 D2, D1 00 Sensor 1 on TS1 01 Sensor 2 on TS2 10 Sensor 3 on TS3 11 Sensor 4 on TS4 D3 Don't use
Note (note 6) (note 7) (note 8) (note 9)
Note 6: Note 7:
Top of sensor bridge, e.g. temperature (ToB - VSSA) Select ramp height if CC=0, ramp height > 1.5V For lowest ADC jitter, chose ramp height > 1.5V. To do so, run A/D ramp height conversion and read CC (conversion complete, LAD8, Bit0). Lower the clock frequency until CC=0.
Note 8: Note 9:
Sensor bridge signal, e.g. pressure (CH1L - CH1H) Power supply voltage of EM6415 circuit
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EM6415
Integrator This signal can be seen on pin CINT
D A A D
8Bit
8Bit
OFFSET ROUGH ADJUST
FS ROUGH ADJUST min. 1.5V for 14Bit at 3V power supply
dV2
0.720V
dV1
t1
t2
t3
D
12Bit
A
14Bit ADC OUTPUT
FS FINE ADJUST
Fig. 5 Integrator ramp
Time t1 t2 t3
Phase Autozero phase FS fine adjust FS rough adjust
Execution Set up of integrator starting point Signal integration with preprogrammed counter time length t2 De-integration with preprogrammed reference voltage, time length of t3 = ADC output counts
dV1 is the Offset Rough Adjust dV2 is the Integrator Ramp Length Offsets and other system mismatch such as the zero drift of operational amplifiers, long term instabilities or supply voltage fluctuations are cancelled during the Autozero phase. Sensitivity and full-scale range adjustments are done during rampup and rampdown of the dual slope integrator.
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EM6415
Pad Description & Pin Assignment in SSOP36
PIN Nr 10 11 12 13 14 15 16 17 18 19 20 21 2 1 36 35 31 32 33 34 22 23 24 25 26 8 9 3 5 6 7 29 30 27 4, 28
I: Input
Name TS1 CH1H CH1L TS2 CH2H CH2L TS3 CH3H CH3L TS4 CH4H CH4L D0P D1P D2P D3P
RD ALE
I/O
CE
WR
I/O I/O I/O I/O I I I I
Description Top of sensor1 bridge connection pin Sensor1 channel high signal in Sensor1 channel low signal in Top of sensor2 bridge connection pin Sensor2 channel high signal in Sensor2 channel low signal in Top of sensor3 bridge connection pin Sensor3 channel high signal in Sensor3 channel low signal in Top of sensor4 bridge connection pin Sensor4 channel high signal in Sensor4 channel low signal in Microprocessor Port Data 0 Microprocessor Port Data 1 Microprocessor Port Data 2 Microprocessor Port Data 3 Read strobe for BUS read (active low) Address latch enable (active low) Chip enable (active low) Write strobe for BUS write (active low) Connection to integrator capacitor Connection to auto-zero capacitor 3 way connection for integrator Connection of resistor for integrator Connection of resistor for integrator when 10 bit conversion used Resistor to select sensor bridge1 maximum drive current Resistor to select sensor bridge2 maximum drive current External clock input Internal/external clock select Positive supply voltage of digital part Positive supply voltage of analog part Negative supply voltage of analog part Negative supply voltage of digital part Reference voltage Not connected
CINT AZN P3WAY RINT13_14 RINT10 RSEN1 RSEN2 CLKP CLKSEL VDDD VDDA VSSA VSSD VREF NC
O: Output
I I
O
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EM6415
Package Information
SSOP36 - 300 mils
Symbol
A A1 A2 B C D E e H h L X
Common dimensions (inches) Min Nom Max 0.097 0.101 0.104 0.0050 0.009 0.0115 0.090 0.092 0.094 0.012 0.014 0.017 0.0091 0.010 0.0125 0.602 0.607 0.612 0.292 0.296 0.299 0.0315 BSC 0.400 0.406 0.410 0.010 0.013 0.016 0.024 0.032 0.040 0.085 0.093 0.100 0 5 8
Note
Symbol
A A1 A2 B C D E e H h L X
Common dimensions (mm) Min. Nom Max 2.46 2.56 2.64 0.127 0.22 0.29 2.29 2.34 2.39 0.31 0.36 0.43 0.23 0.25 0.32 15.29 15.42 15.54 7.42 7.52 7.59 0.80 BSC 10.16 10.31 10.41 0.25 0.33 0.41 0.61 0.81 1.02 2.16 2.36 2.54 0 5 8
Note
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EM6415
Ordering Information
The EM6415 has metal mask options for the Gain of the Input Amplifier (between 1 and 150 max) and for the Offset Adjust Range. Contact EM Microelectronic for availability of different options not shown in table below. Please make sure to order the exact Part Number when ordering.
Input Amplifier Gain 5 5 OS/FS Rough Adjust (note 1) Separate Registers for each sensor Common Registers for the 4 sensors Separate Registers for each sensor custom Offset Adjust Range -40mV to +40mV -40mV to +40mV
Part Number EM6415V1WS11 EM6415V1SS36A EM6415V1SS36B EM6415V2WS11 EM6415V2SS36A EM6415V2SS36B EM6415V3WS11 EM6415V3SS36A EM6415V3SS36B EM6415V%WS11 EM6415V%SS36A EM6415V%SS36B
Version
Delivery Form
Sawn wafer, 11 mils thickness 36-pin SSOP, Stick 36 pin SSOP, Tape & Reel Sawn wafer, 11 mils thickness 36-pin SSOP, Stick 36 pin SSOP, Tape & Reel Sawn wafer, 11 mils thickness 36-pin SSOP, Stick 36 pin SSOP, Tape & Reel Sawn wafer, 11 mils thickness 36-pin SSOP, Stick 36 pin SSOP, Tape & Reel
V1 V2
V3 V%
150 custom
-40mV to +40mV custom
Note 1: LAD 3, 4, 5, 6
For die size information and pad location diagram, please contact EM Microelectronic-Marin SA.
EM Microelectronic-Marin SA cannot assume responsibility for use of any circuitry described other than circuitry entirely embodied in an EM Microelectronic-Marin SA product. EM Microelectronic-Marin SA reserves the right to change the circuitry and specifications without notice at any time. You are strongly urged to ensure that the information given has not been superseded by a more up-to-date version.
(c) EM Microelectronic-Marin SA, 11/02, Rev. B
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