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Technical content
Features
Low Noise Input: <30 nV/(Hz)1/2 at 100 Hz Anti Alias Filter with Adjustable Gain Lowpass Filter with Adjustable Gain Stage Programmable SC Highpass Filter with Gain Adjust Programmable SC Lowpass Filter with Gain Adjust Temperature Sensor Offset Adjust 12 bit 160 ksps A-to-D Converter and 4 input Mux
Applications
Test Equipment Cards/Data Acquisition Cards Absolute Maximum Ratings Power Supply Voltage +6V Storage Temperature Range -60 to +150°C Operating Temperature Range -45 to +85°C MSSPSI Smart Programmable Sensor Interface Data Sheet ©2004-22014 Mixeed Signal Inteegratioon 1 Weeb Sitee ““www.mix-ssig.coom”” INEXT AF1 INHP I NLP OPO INN OUTLP INP SQO DOUT OFST SOUT COUT DS INAD SCK DIN VA VREFI VREF VDDW WU CLK 12-BIT 160 Ksps ANALOG TO DIGITAL CONVERTER OFFSET ADJUST AAF WITH GAIN TEMPERATURE SENSOR FOUR INPUT MUX SWITCHED CAPACITOR FILTER CLOCK GENERATOR HIGHPASS FILTER WITH GAIN SW ITCH VREF GENERATOR LOW PASS FILTER WITH GAIN SW ITCH SW ITCH SW ITCH DIGITAL CONTROL LATCHES WATCHDOG TIMER ADJUSTABLE SQUAREW AVE OUTPUT LOW FREQUENCY LOW PASS FILTER
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC Specifications --- ----- Operating Voltage VDD 3.3 5.0 5.5 V Supply Current Regular IDD Power Control Bits 1111 6 mA Supply Current Medium IDD Power Control Bits 1010 5 mA Supply Current Low IDD Power Control Bits 0101 3 mA Input Offset Voltage IOV 5 mv Input Bias Current IBI 50 pA Switch Input On Resistance R IN 20 k Ω Temperature Voltage T= 25 oC 2.5 V Temperature Voltage Slope -20 to +80 oC +8.0 mV/ oC I/O Interface Voltage VIO 3 VDD V Reference Voltage VREF VDD/2 V AC Specifications Amp Unity Gain Bandwidth 2 MHz Output Voltage Range 4 Vpp Output Sink Capability 2 mA Output Source Capability 0.2 mA Input Impedance 1 M Ω Input Referenced Noise Amp e n fo=100 Hz 30 nv/(Hz) 1/2 Total Harmonic Distortion THD fo=1 kHz A weighted -60 dB Maximum Clock Frequency 20 MHz MSSPSI Smart Programmable Sensor Interface Data Sheet ©2004-22014 Mixeed Signal Inteegratioon 2
Electrical Characteristics
(VDD = +5.0V, T = 25o C) Weeb Sitee ““www.mix-ssig.coom”” Mixed Signal Integration Corporation reserves the right to change any product or specification without notice at any time. Mix ed Signal Integration products are not designed or authorized for use in life support systems. Mixed Signal Integration assumes no respo nsibility for errors in this document.
Smart Programmable Sensor Interface Data Sheet ©2004-22014 Mixeed Signal Inteegratioon 3 Block Diagram Weeb Sitee ““www.mix-ssig.coom”” INEXT AF1 INHP I NLP OPO INN O INP SQO DOUT OFST SOUT COUT DS INAD SCK DIN VA VREFI VDDW WU VREF 12-BIT 160 Ksps ANALOG TO DIGITAL CONVERTER OFFSET ADJUST 16,32, 64 :1 CLK/CNR AAF W/ 0,6,12 and 18 dB 128:1,512:1 CLK/CNR LOW FREQUENCY LOW PASS FILTER 0,6,12, 18 dB GAIN TEMPERATURE SENSOR FOUR INPUT MUX SW ITCHED CAPACITOR FILTER CLOCK GENERATOR 32:1, 256:1 HIGHPASS FILTER WITH 0,6,12, and 18 dB GAIN SW ITCH VREF GENERATOR 64:1, 512:1 LOW PASS FILTER WITH 0,3,6 and 9 dB GAIN SW ITCH SW ITCH SW ITCH DIGITAL CONTROL LATCHES W ATCHDOG TIMER ADJUSTABLE SQUAREW AVE OUTPUT FILTER CLOCK DIVIDE BY 8,16, 32 FILTER CLOCK DIVIDE BY 16 FILTER CLOCK DIVIDE BY 1024,2048,4096, 8192 FIGURE 2: DET AILED BLOCK DIAGRAM
Smart Programmable Sensor Interface Data Sheet Pin Number Pin Name Description
16 DOUT Data Output
17 SOUT Strobe Out
18 COUT Calibrator Output
19 WU Watchdog output
20 AF1 Alias Filter 1 Output
Drives >100kohms <12 pF
21 VA Positive Supply;
Typically 5.0VDC
22 INAD Input to A/D
23 OUTLP Lowpass Filter Output
24 INLP Lowpass Filter Input)
25 INHP Highpass Filter Input
26 N/C Do Not Connect
27 INEXT External Input
28 BIAS Bias Input
29 OFST Offset Adjust Output
30 OPO Op Amp Output
31 N/C Test Only; Do not
32 INN Low NoiseOp Amp
Pin Number Pin Name Description
1 INP Low Noise Amp
2 SQO Square Wave Output
3 VREFI Voltage reference input
A 0.1 μF cap to AGND is connected to this pin
4 VREF Voltage Reference
Nominally 2.5 VDC
5 TEMP Temperature Sensor Output
6 AGND Analog Ground
7 DGND Digital Ground
8 N/C Do Not Connect
9 CLK Master Clock
10 DS Data Strobe Input
11 SCK Serial Data Clock
12 DI Serial Data
13 VIO IO Interface
Nominally 3.0 VDC
14 VDDW Watchdog timer VDD
15 DVDD DIGITAL POSITIVE
SUPPLY; Typically 5.0VDC. 0.1 μF capacitor to ground ©2004-22014 Mixeed Signal Inteegratioon 4Weeb Sitee ““www.mix-ssig.coom””
The MSSPSI uses serial data control with address and data clocked in with 21 cycles of the CLK clock. The data strobe (DS) resets the internal address data shift register. The address is a 4 bit nibble followed by a 16 bit word. Address Description
0000 Calibration Control Register; Controls signal
0001 Offset DAC control level Controls votage
at pin 29; AAF and OpAmp current con trol Address Description
0010 Amp and Antialias filter1 and 2 control
0011 Highpass Filter Control Register
0100 Lowpass Filter Control Register
0101 A/D converter and Watchdog timer
0110 Watchdog Timer Count Register
Smart Programmable Sensor Interface Data Sheet ©2004-22014 Mixeed Signal Inteegratioon 5Weeb Sitee ““www.mix-ssig.coom”” CLOCK 10 ns 10 ns NOMINAL NOMI NAL DS A3 A2 A1 A0 D15D14D13D12D11D10D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 A3-A0/D15-D0 FIGURE 3: TIMING DIAGRAM OF ADDRESS/DA T A INPUT
Smart Programmable Sensor Interface Data Sheet ©2004-22014 Mixeed Signal Inteegratioon 7Weeb Sitee ““www.mix-ssig.coom”” ADDRESS NIBBLE DATA WORD A3 A2 A1 A0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 DESCRIPTION 0 0 0 0 0 0 0 0 CALOSC CALPD CAL LEV CALIBRATION FREQUENCY [D7-D0] 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Power on Default 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0. 0 0 10kHz 40mvpp 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 1 5kHz 160mvpp 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 0 3.3kHz 270mvpp 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 1 1 2.5kHz 400mvpp 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 0 2kHz 400mvpp 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 1 0 0 1.15kHz 400mvpp 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 590Hz 400mvpp 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 0 0 0 307Hz 400mvpp0 0 0 0 0 0 0 0 0 1 1 1 0 0 1 0 0 0 0 0 152Hz 400mvpp0 0 0 0 0 0 0 0 0 1 1 1 0 1 0 0 0 0 0 0 78Hz 400mvpp 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 39Hz 400mvpp 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 CAL OFF 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 1 1 1 1 CAL PD
Smart Programmable Sensor Interface Data Sheet ©2004-22014 Mixeed Signal Inteegratioon 8Weeb Sitee ““www.mix-ssig.coom”” ADDRESS NIBBLE DATA WORD A3 A2 A1 A0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 DESCRIPTION 0 0 0 1 0 0 0 AAF IDD OPAMP IDD 0 0 OFFSET DAC SCALE RANGE [D6-D0] 0 0 0 1 0 0 0 0 1 0 1 0 0 1 0 0 0 0 0 1 Power on Default 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0. 0 0 Low AAF current Low Amp current -4 mV DAC 0 0 0 1 0 0 0 1 0 1 0 0 0 0 0 1 1 1 1 1 Nor. AAF current Nor. Amp current -252mV DAC 0 0 0 1 0 0 0 1 1 1 1 0 0 1 0 1 1 1 1 1 Max. AAF current Max. Amp current -2.52mVDAC 0 0 0 1 0 0 0 1 1 1 1 0 0 0 1 0 0 0 0 0 Maxr. AAF current Max. Amp current 4mVDAC 0 0 0 1 0 0 0 1 1 1 1 0 0 0 1 1 1 1 1 1 Max. AAF current Max. Amp current 252mVDAC 0 0 0 1 0 0 0 1 1 1 1 0 0 1 1 1 1 1 1 1 Max. AAF current Max. Amp current 2.52mVDAC
A3 A2 A1 A0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 DESCRIPTION 0 0 1 0 0 AAF2 Gain AAF1Gain AAFIN AAFC AAF2 AAF1 1 0 1 1 1 CNR CNR 0 0 1 0 0 0 0 0 1 0 1 0 0 1 1 1 0 1 1 1 Power on Default 0 0 1 0 0 0 1 0 1 0 1 0 0 1 1 1 0 1 1 1 6dB AAF2 6dB AAF1 Amp to AAF AAF2 to HP
44 Hz AAF2
0 0 1 0 0 1 0 1 0 0 1 0 1 0 1 1 0 1 1 1 12dB AAF2 12dB AAF1 Amp to AAF AAF2 to HP 156Hz AAF2 8.5kHz AAF1 0 0 1 0 0 1 1 1 1 0 1 0 1 0 0 1 0 1 1 1 18dB AAF2 18dB AAF1 Amp to AAF AAF2 to HP 156Hz AAF2 2.6kHz AAF1 0 0 1 0 0 1 1 1 1 1 0 1 1 0 0 1 0 1 1 1 18dB AAF2 18dB AAF1 EXT to AAF AAF1 to HP 156Hz AAF2 2.6kHz AAF1 0 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 1 1 1 0dB AAF2 0dB AAF1 EXT to AAF HPIN to HP 156Hz AAF2 2.6kHz AAF1 Smart Programmable Sensor Interface Data Sheet ©2004-22014 Mixeed Signal Inteegratioon 9Weeb Sitee ““www.mix-ssig.coom””
©2004-22014 Mixeed Signal Inteegratioon 10Weeb Sitee ““www.mix-ssig.coom”” Smart Programmable Sensor Interface Data Sheet ADDRESS NIBBLE DATA WORD A3 A2 A1 A0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 DESCRIPTION 0 0 1 1 0 0 0 0 0 0 HP GAIN HPCONF HP CNR HP CLOCK 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 Power on Default 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 6dB HP HP to LP 1.5Hz HP 0 0 1 1 0 0 0 0 0 0 1 0 1 0 1 1 1 0 1 0 12dB HP HP TO LP 10kHz HP 0 0 1 1 0 0 0 0 0 0 1 1 0 1 0 1 1 0 1 0 18dB HP AAF to LP 1.25kHz HP 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 12dB HP EXT to LP
1 Hz HP
0 0 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 1 0dB HP HP to LP
78 Hz HP
0 0 1 1 0 0 0 0 0 0 1 0 1 0 0 1 0 0 1 1 12dB HP HP TO LP
10 Hz HP
0 0 1 1 0 0 0 0 0 0 1 1 0 1 0 0 0 1 0 1 18dB HP AAF to LP
20 Hz HP
0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 12dB HP EXT to LP
621 Hz HP
0 0 1 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0dB HP HP to LP
155 Hz HP
©2004-22014 Mixeed Signal Inteegratioon 11Weeb Sitee ““www.mix-ssig.coom”” Smart Programmable Sensor Interface Data Sheet ADDRESS NIBBLE DATA WORD A3 A2 A1 A0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 DESCRIPTION 0 1 0 0 0 0 0 0 LP GAIN A/D CUR LP CUR LP LPC LP CLOCK CONF CNR 0 1 0 0 0 0 0 0 1 1 0 1 0 1 0 1 0 0 0 1 Power on Default 0 1 0 0 0 0 0 0 1 1 0 0 0 1 1 1 0 1 1 1 9dB LP LOW A/D I MED LP CUR HP OUT 1.3kHz LP 0 1 0 0 0 0 0 0 1 0 1 1 1 1 0 1 1 0 0 0 6dB LP MAX A/D I MAX LP CUR LP OUT 2.6kHz LP 0 1 0 0 0 0 0 0 0 0 1 0 1 0 1 0 0 1 1 1 0dB LP MED A/D I MED LP CUR HP OUT 813Hz LP 0 1 0 0 0 0 0 0 0 1 0 1 1 0 0 1 0 0 0 1 3dB LP MLO A/D I MED LP CUR HP OUT 2.4Hz LP 0 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 1 3dB LP LOW A/D I MED LP CUR HP OUT 10Hz LP
© 2004-22014 Mixeed Signal Inteegratioon 12Weeb Sitee ““www.mix-ssig.coom”” Smart Programmable Sensor Interface Data Sheet ADDRESS NIBBLE DATA WORD A3 A2 A1 A0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 DESCRIPTION 0 1 0 1 0 0 0 WUTRST SLP MCLOCK DIVIDER A/D CLOCK A/D MUX 0 1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 Power on Default 0 1 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 WUT ENABLE NO RESET NO SLEEP
10 MHz CLK
0 1 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 WUT ENABLE NO RESET NO SLEEP 5.12MHz CLK 80kHZ A/D FLT INPUT 0 1 0 1 0 0 0 0 0 0 0 0 1 0 1 0 0 1 1 0 WUT ENABLE NO RESET NO SLEEP
20 MHz CLK
0 1 0 1 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 WUT ENABLE NO RESET NO SLEEP 0 1 1 0 WAKEUP TIMER COUNT [D15-D0] 0 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 Default MSSPSI
© 2004-22014 Mixeed Signal Inteegratioon 13Weeb Sitee ““www.mix-ssig.coom”” Smart Programmable Sensor Interface Data Sheet INP NC2 VREFI REF TEMP AGND DGND TEST CLK DS SCK DIN VIO VDDW VD DOUT SOUT COUT WU AF1 VA INAD OUTLP INLP INHP NC_26 INEXT BIA S OFST OPO NC_31 INN MSSPSI VD D 3.3V VCC 100nF 100ohm 10kohm 10kohm INVERTING _INPUT 1.0uF 100kohm TE M P _ O UT 100nF 22uF NONINVERTING_INPUT 22uF 100nF 22uF LOWPASS_OUT PUT WAKEUP_OUTPUT ANT I_ALIAS_OUT INPUT _AD INPUT _LOWPASS AD_STROBE_OUT CALIBRATION_OUT 10MHz 5V DATA_STROBE SERIAL_CLOCK ADDRESS_DAT A_IN 100ohm INPUT _HIGHPASS E XTERNAL_INPUT FIGURE 6: TYPICAL SCHEMA TIC
© 2004-22014 Mixeed Signal Inteegratioon 14Weeb Sitee ““www.mix-ssig.coom”” Smart Programmable Sensor Interface Data Sheet Watchdog Timer Operation The MSSPSI watchdog timer times to 18 hours from 2.3 seconds in 1 second increments. The watchdog timer is activated with bit 12 of Address Nibble 0110 (0x06). The timer is first deactivated ( bit 12 is set) then activated (bit 12 is reset) to start the timer. CMRR -70 -60 -50 -40 -30 -20 -10 10 100 1000 10000 100000 FREQUENCY (Hz) AMPLITUDE (dB) FIGURE 7: INPUT AMPLIFIER COMMON MODE REJECTION RA TIO MSSPSI
Smart Programmable Sensor Interface Data Sheet © 2004-22014 Mixeed Signal Inteegratioon 15Weeb Sitee ““www.mix-ssig.coom”” STANDARD PRODUCTS MSGEQ5A Five Band Graphic Equalizer MSGEQ7 Seven Band Graphic Equalizer MSHFS1-6 Selectable High Frequency LP/BP Filter MSFS1-6 Selectable Lowpass/Bandpass Filter MSCAHF Selectable High Frequency Active Lowpass/Bandpass Filter MSU1F1-4, MSU2F1 Resistor Programmable Universal Active Filter MSU1HF1-4, MSU2HF1 High Frequency Resistor Programmable Universal Active Filter MSELP Switched Capacitor Elliptic Lowpass Filter with Op Amps MSNBLP Switched Capacitor Butterworth Lowpass Filter MSLE/B/C5L/M Switched Capacitor General Purpose Lowpass Filter MS2LFS Dual Selectable Low Voltage Lowpass/Bandpass Filter MSLFS Selectable Low Voltage Lowpass/Bandpass Filter MSHN1-6 Selectable High Pass/Notch Filter MSRAAF Resistor Programmable Active Audio Filter MSRAHF Resistor Programmable Active High Frequency Filter MSDET Tone Detector MSEPAF Electrically Programmable Active Filter MSCBT Communications Baseband Transceiver MSLV14 14 MHz Video Lowpass Filter MSSPSI
Smart Programmable Sensor Interface Data Sheet © 2004-22014 Mixeed Signal Inteegratioon 16Weeb Sitee ““www.mix-ssig.coom”” Mixed Signal Integration 2157F O'Toole Avenue San Jose, California 95131-1332 Phone: (408)-434-6305 In Mississippi, Alabama, Georgia South Carolina, North Carolina, and Tennessee contact: Adeptronics
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