MAX1455AAE Maxim Integrated Products, MAX1455AAE Datasheet
MAX1455AAE
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MAX1455AAE Summary of contents
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... On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction o Fast 3.2kHz Frequency Response o On-Chip Uncommitted Op Amp o Secure-Lock™ Prevents Data Corruption PART MAX1455EUE* MAX1455AUE* MAX1455EAE MAX1455AAE Applications MAX1455C/D *Future product—contact factory for availability. **Dice are tested at T TOP VIEW Outputs Conditioner Features Ordering Information TEMP ...
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... Operating Temperature Ranges (T MAX1455EUE ..................................................-40°C to +85°C + 0.3V) MAX1455AUE ................................................-40°C to +125°C DD_ MAX1455C/D ...................................................-40°C to +85°C MAX1455EAE ..................................................-40°C to +85°C MAX1455AAE ................................................-40°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................ +300°C CONDITIONS (Note 1) DD ...
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Low-Cost Automotive Sensor Signal ELECTRICAL CHARACTERISTICS (continued +5V +25°C, unless otherwise noted PARAMETER SYMBOL Load Current Sink DC Output Impedance Offset DAC Output Ratio Offset TC DAC Output Ratio Step ...
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Low-Cost Automotive Sensor Signal Conditioner ELECTRICAL CHARACTERISTICS (continued +5V +25°C, unless otherwise noted PARAMETER SYMBOL Output Current Drive on Rej ecti on Rati o ...
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Low-Cost Automotive Sensor Signal PIN NAME TEST1, 1, 15, 16 TEST3, Test Pins. Connect to V TEST2 Analog Output. Internal voltage nodes can be accessed in digital mode. OUT can be parallel 2 OUT connected to DIO. Bypass OUT to ...
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Low-Cost Automotive Sensor Signal Conditioner The MAX1455 allows complete calibration and sensor verification to be performed at a single test station. Once calibration coefficients have been stored in the ASIC, the customer can choose to retest in order to verify ...
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Low-Cost Automotive Sensor Signal temperature indexed lookup table with one hundred seventy-six 16-bit entries. The on-chip temperature sen- sor provides a unique FSO trim from the table with an indexing resolution approaching one 16-bit value every 1.5°C from -40°C to ...
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Low-Cost Automotive Sensor Signal Conditioner SENSOR Figure 2. Basic Ratiometric Output Configuration SENSOR Figure 3. Basic Nonratiometric Output Configuration • Registers ODAC and FSODAC are refreshed from the temperature indexed EEPROM locations. Normal Operation, Continuous Refresh: • ...
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Internal EEPROM The internal EEPROM is organized as a 768 by 8-bit memory divided into 12 pages, with 64 bytes per page. Each page can be individually erased. The memo- ry structure is arranged as shown in Table ...
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Low-Cost Automotive Sensor Signal Conditioner Table 1. EEPROM Memory Address Map LOW-BYTE PAGE ADDRESS (hex) 000 0 03E 040 1 07E 080 2 0BE 0C0 3 0FE 100 4 13E 140 15E 160 162 164 5 166 168 16A 16C ...
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Low-Cost Automotive Sensor Signal Table 2. EEPROM ODAC and FSODAC Lookup Table Memory Map TEMP-INDEX[7:0] 00hex to 7Fhex 80hex to AFhex Table 3. Registers REGISTER CONFIG Configuration register ODAC Offset DAC register OTCDAC Offset temperature coefficient DAC register FSODAC Full-span ...
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Low-Cost Automotive Sensor Signal Conditioner Table 5. Configuration Register (CONFIG[15:0]) FIELD NAME 15:13 OSC[2:0] Oscillator frequency setting. Factory preset; do not change. 12:11 CLIP[1:0] Sets output clip levels. 10 PGA Sign Logic 1 inverts INM and INP polarity (Table 6). ...
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Low-Cost Automotive Sensor Signal Table 7. Input Referred Offset (IRO[2:0]) IRO SIGN, IRO[2:0] 1,111 1,110 1,101 1,100 1,011 1,010 1,001 1,000 0,000 0,001 0,010 0,011 0,100 0,101 0,110 0,111 Serial Digital Output DIO is configured as a digital output by ...
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Low-Cost Automotive Sensor Signal Conditioner DIO IRS COMMAND (8 BITS) IRSA [3:0] IRSD [3:0] 0000 DHR [3:0] 0001 DHR [7:4] 0010 DHR [11:8] 0011 DHR [15:12] 0100 RESERVED 0101 RESERVED ICRA [3:0] 0110 IEEA [3:0] 0111 IEEA [7:4] IRSP [3:0] ...
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Low-Cost Automotive Sensor Signal Table 8. Control Location (CL[15:0]) FIELD NAME 15:8 CL[15:8] Reserved Control Location. Secure-Lock is activated by setting this to FFhex, which disables DIO serial 7:0 CL[7:0] communications and connects OUT to PGA output. Table 9. IRSA ...
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Low-Cost Automotive Sensor Signal Conditioner Table 10. CRIL Command Codes CRIL[3:0] NAME 0000 LdICR Load Internal Calibration register at address given in ICRA with data from DHR[15:0]. 0001 EEPW EEPROM write of 8 data bits from DHR[7:0] to address location ...
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Low-Cost Automotive Sensor Signal Table 11. IRSP Decode IRSP[3:0] RETURNED VALUE 0000 DHR[7:0] 0001 DHR[15:8] 0010 IEEA[7:4], ICRA[3:0] concatenated 0011 CRIL[3:0], IRSP[3:0] concatenated 0100 ALOC[3:0], ATIM[3:0] concatenated 0101 IEEA[7:0] EEPROM address byte 0110 IEED[7:0] EEPROM data byte 0111 Temp-Index[7:0] 1000 ...
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Low-Cost Automotive Sensor Signal Conditioner Example 2. Read the lookup table pointer (Temp- Index). COMMAND ACTION 78hex Load 7 to IRSP[3:0] register. 59hex Read IRS. Host ready to receive data within 1 byte time of sending the Read IRS command. ...
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Low-Cost Automotive Sensor Signal Table 13. ALOC Definition ALOC[3:0] ANALOG SIGNAL 0000 OUT 0001 BDR 0010 ISRC 0011 VDD 0100 VSS 0101 CLIP-TOP 0110 CLIP-BOTTOM 0111 FSODAC 1000 FSOTCDAC 1001 ODAC 1010 OTCDAC 1011 VREF 1100 VPTATP 1101 VPTATM 1110 ...
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Low-Cost Automotive Sensor Signal Conditioner Table 14. ATIM Definition ATIM[3:0] DURATION OF ANALOG SIGNAL SPECIFIED IN BYTE TIMES (8-BIT TIME) 0 0000 byte times, i.e 0001 byte times ...
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Low-Cost Automotive Sensor Signal DIO[1:N] DIGITAL MULTIPLEXER +5V V DVM Figure 7. Automated Test System Concept Table 16. Effects of Compensation TYPICAL UNCOMPENSATED INPUT (SENSOR) Offset…………………..…….………………………….±100% FSO FSO…………………………….………………....1mV/V to 40mV/V Offset TC…………………………………………………...20% FSO Offset TC Nonlinearity…..………………………………….4% FSO FSOTC…………………………..………………………..-20% FSO FSOTC ...
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Low-Cost Automotive Sensor Signal Conditioner RAW SENSOR OUTPUT (T = +25° PRESSURE (kps) COMPENSATED TRANSDUCER ERROR 0.15 FSO OFFSET 0.10 0.05 0 -0.05 -0.10 -0.15 - TEMPERATURE (°C) Figure ...
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Low-Cost Automotive Sensor Signal TEST 1 V TEST 2 DD TEST 3 TEST 4 R ISRC R STC 75kΩ 75kΩ BDR FSOTC DAC INP PHASE V SS REVERSAL MUX MUX INM INPUT-REFERRED OFFSET (COARSE OFFSET IRO ...
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Low-Cost Automotive Sensor Signal Conditioner 24 ______________________________________________________________________________________ Package Information ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 25 © 2001 Maxim Integrated Products ...