MAX149BEAP-T Maxim Integrated, MAX149BEAP-T Datasheet
MAX149BEAP-T
Specifications of MAX149BEAP-T
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MAX149BEAP-T Summary of contents
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Rev 5; 1/12 +2.7V to +5.25V, Low-Power, 8-Channel, General Description The MAX148/MAX149 10-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. They operate from a single +2.7V to ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs ABSOLUTE MAXIMUM RATINGS V to AGND, DGND ..............................................-0.3V to +6V DD AGND to DGND ...................................................-0.3V to +0.3V CH0–CH7, COM to AGND, DGND ........... -0. REFADJ to AGND ...........................-0.3V ...
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Low-Power, 8-Channel, ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V; COM = MAX149—4.7FF capacitor at V pin; MAX148—external reference, V REF otherwise noted.) PARAMETER SYMBOL CONVERSION RATE (continued) Internal Clock Frequency External Clock Frequency ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V; COM = MAX149—4.7FF capacitor at V pin; MAX148—external reference, V REF otherwise noted.) PARAMETER SYMBOL DIGITAL INPUTS (DIN, SCLK, CS, SHDN) ...
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Low-Power, 8-Channel, TIMING CHARACTERISTICS (V = +2.7V to +5.25V MIN PARAMETER SYMBOL Acquisition Time DIN to SCLK Setup DIN to SCLK Hold SCLK Fall to Output Data Valid CS Fall ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs (V = 3.0V, VREF = 2.500V 2.0MHz SCLK INTEGRAL NONLINEARITY vs. CODE 0.10 0.05 0 -0.05 -0.10 0 256 512 768 CODE SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.00 ...
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Low-Power, 8-Channel, PIN NAME 1–8 CH0–CH7 Sampling Analog Inputs Ground Reference for Analog Inputs. COM sets zero-code voltage in single-ended mode. Must be 9 COM stable to ±0.5 LSB. Three-Level Shutdown Input. Pulling SHDN low shuts the ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs Detailed Description The MAX148/MAX149 analog-to-digital converters (ADCs) use a successive-approximation conversion technique and input track/hold (T/H) circuitry to convert an analog signal to a 10-bit digital output. A flexible serial interface provides ...
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Low-Power, 8-Channel +2.500V CH7 ANALOG 0.01µF INPUT +3V +3V REFADJ 2.5V V OUT V C1 1000pF MAX872 0.1µF COMP OPTIONAL FOR MAX149, REQUIRED FOR MAX148 *FULL-SCALE ANALOG INPUT, CONVERSION RESULT = $FFF (HEX) Figure 5. ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs Table 1. Control-Byte Format BIT 7 BIT 6 (MSB) START SEL2 BIT NAME 7(MSB) START The first logic “1” bit after CS goes low defines the beginning of the control byte. 6 ...
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Low-Power, 8-Channel, Table 3. Channel Selection in Differential Mode (SGL/DIF = 0) SEL2 SEL1 SEL0 ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs CS t CSS t CSH SCLK DIN t DV DOUT Figure 7. Detailed Serial-Interface Timing CS t SDV SSRTB SCLK Figure 8. External Clock Mode SSTRB Detailed Timing ...
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Low-Power, 8-Channel SCLK SEL2 SEL1 SEL0 DIN START SSTRB DOUT AD STATE Figure 9. Internal Clock Mode Timing CS t CSH SSTRB SCLK PD0 CLOCK IN DOUT NOTE: FOR BEST NOISE PERFORMANCE, KEEP ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs Table 4. Typical Power-Up Delay Times REFERENCE- REFERENCE BUFFER BUFFER COMPENSATION MODE Enabled Internal Enabled Internal Enabled External Enabled External Disabled — Disabled — the control byte (the PD0 bit) is clocked ...
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Low-Power, 8-Channel SCLK DIN S CONTROL BYTE 0 DOUT SSTRB Figure 11a. External Clock Mode, 15 Clocks/Conversion Timing SCLK DIN S CONTROL BYTE 0 DOUT Figure 11b. External Clock Mode, 16 Clocks/Conversion ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs CLOCK MODE SETS INTERNAL CLOCK MODE DIN DOUT SSTRB CONVERSION MODE Figure 12b. Timing Diagram Power-Down Modes, Internal Clock Table 5. Software Power-Down and ...
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Low-Power, 8-Channel, AVERAGE SUPPLY CURRENT vs. CONVERSION RATE (USING FASTPD) 10,000 = ∞ R LOAD CODE = 1010101000 1000 8 CHANNELS 100 100 1k CONVERSION RATE (Hz) Figure 14b. MAX149 Supply Current ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs DIN FULLPD 1.21V 0 REFADJ 2.50V 0 V REF Figure 15. MAX149 FULLPD/FASTPD Power-Up Sequence +3.3V 24kI 510kI REFADJ 100kI 12 0.01µF Figure 16. MAX149 Reference-Adjust Circuit Lowest Power ...
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Low-Power, 8-Channel, Table 7. Full Scale and Zero Scale UNIPOLAR MODE Full Scale Zero Scale REF COM OUTPUT CODE V REF 011 . . . 111 FS COM 2 ...
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Low-Power, 8-Channel, Serial 10-Bit ADCs + 1 CH0 2 CH1 3 CH2 4 CH3 ANALOG INPUTS 5 CH4 6 CH5 7 CH6 8 CH7 9 COM 10 SHDN Figure 20. MAX148/MAX149 QSPI Connections, External Reference XF CS ...
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Low-Power, 8-Channel, CS SCLK DIN START SEL2 SEL1 SSTRB DOUT Figure 22. TMS320 Serial-Interface Timing Diagram High-Speed Digital Interfacing with QSPI The MAX148/MAX149 can interface with QSPI using the circuit in Figure 2.0MHz, CPOL ...
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... MAX149BCAP+ 0°C to +70°C MAX149AEPP+ -40°C to +85°C MAX149BEPP+ -40°C to +85°C MAX149AEAP+ -40°C to +85°C MAX149BEAP+ -40°C to +85°C MAX149BMAP/PR+ -55°C to +125°C MAX149BMAP/PR2+ -55°C to +125°C MAX149BMAP/PR3+ -55°C to +125°C † Contact factory for availability of alternate surface-mount package ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, Inc. 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 2012 Maxim Integrated Products © ...