MAX1247BCPE+ Maxim Integrated Products, MAX1247BCPE+ Datasheet
MAX1247BCPE+
Specifications of MAX1247BCPE+
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MAX1247BCPE+ Summary of contents
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... Pin Configuration appears at end of data sheet. SPI and QSPI are registered trademarks of Motorola, Inc. MICROWIRE is a registered trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. +2.7V, Low-Power, 4-Channel, ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 ABSOLUTE MAXIMUM RATINGS V to AGND, DGND................................................. -0. AGND to DGND ...................................................... -0.3V to 0.3V CH0–CH3, COM to AGND, DGND ............ -0. VREF to AGND........................................... -0.3V to ...
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ELECTRICAL CHARACTERISTICS (continued +2.7V to +3.6V (MAX1246 clocks/conversion cycle (133ksps); MAX1246—4.7µF capacitor at VREF pin; MAX1247—external reference, VREF = 2.5V applied to VREF pin unless otherwise noted.) A ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 ELECTRICAL CHARACTERISTICS (continued +2.7V to +3.6V (MAX1246 +2.7V to +5.25V (MAX1247); COM = 0V clocks/conversion cycle (133ksps); MAX1246—4.7µF capacitor at VREF pin; MAX1247—external reference, ...
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ELECTRICAL CHARACTERISTICS (continued +2.7V to +3.6V (MAX1246 clocks/conversion cycle (133ksps); MAX1246—4.7µF capacitor at VREF pin; MAX1247—external reference, VREF = 2.5V applied to VREF pin unless otherwise noted.) A ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 TIMING CHARACTERISTICS (V = +2.7V to +3.6V (MAX1246 +2.7V to +5.25V (MAX1247 PARAMETER SYMBOL Acquisition Time t ACQ DIN to SCLK Setup t DIN to SCLK Hold ...
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Operating Characteristics (continued 3V, VREF = 2.5V 2MHz SCLK SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.00 = ∞ CODE = 101010100000 C = 50pF LOAD 1.75 1.50 MAX1246 1.25 1. ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 ____________________________Typical Operating Characteristics (continued 3V, VREF = 2.5V 2MHz SCLK OFFSET vs. SUPPLY VOLTAGE 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 2.25 ...
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Description PIN NAME 1 V Positive Supply Voltage DD 2–5 CH0–CH3 Sampling Analog Inputs Ground reference for analog inputs. COM sets zero-code voltage in single-ended mode. Must be 6 COM stable to ±0.5LSB. Three-Level Shutdown Input. Pulling SHDN low ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 _______________Detailed Description The MAX1246/MAX1247 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 12-bit digital output. A flexible seri- al interface ...
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Table 1. Control-Byte Format BIT 7 BIT 6 BIT 5 (MSB) START SEL2 SEL1 BIT NAME DESCRIPTION The first logic “1” bit after CS goes low defines the beginning of the control byte. 7(MSB) START 6 SEL2 These three bits ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 Table 2. Channel Selection in Single-Ended Mode (SGL SEL2 SEL1 SEL0 Table 3. ...
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CS SCLK 1 4 UNI/ SGL/ DIN SEL2 SEL1 SEL0 BIP DIF START SSTRB RB1 DOUT ACQUISITION A/D STATE IDLE (f SCLK Figure 5. 24-Clock External Clock Mode Conversion Timing (Microwire and SPI Compatible, QSPI Compatible with ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 • • • SDV SSTRB • • • SCLK • • • • Figure 7. External Clock Mode SSTRB Detailed Timing CS SCLK UNI/ DIN ...
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The fastest the MAX1246/MAX1247 can run with CS held low between conversions is 15 clocks per conversion. Figure 10a shows the serial-interface timing necessary to perform a conversion every 15 SCLK cycles in external clock mode tied ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 __________ Applications Information Power-On Reset When power is first applied, and if SHDN is not pulled low, internal power-on reset circuitry activates the MAX1246/MAX1247 in internal clock mode, ready to convert with ...
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CLOCK MODE SHDN SETS EXTERNAL CLOCK MODE DIN DOUT 12 DATA BITS POWERED UP MODE Figure 11a. Timing Diagram Power-Down Modes, External Clock CLOCK MODE SETS INTERNAL CLOCK MODE DIN S X ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 Power-Down Sequencing The MAX1246/MAX1247 auto power-down modes can save considerable power when operating at less than maximum sample rates. Figures 12, 13a, and 13b show the average supply current as a function ...
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DIN FULLPD 1.21V REFADJ 0V 2.50V VREF 0V Figure 14. MAX1246 FULLPD/FASTPD Power-Up Sequence Lowest Power at Higher Throughputs Figure 13b shows the power consumption with external-reference compensation in fast power-down, with one and four channels ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 At VREF, the DC input resistance is a minimum of 18kΩ. During conversion, an external reference at VREF must deliver up to 350µA DC load current and have 10Ω or less output ...
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OUTPUT CODE FS = VREF + COM 011 . . . 111 2 011 . . . 110 ZS = COM -VREF - COM 000 . . . 010 2 VREF 000 . . . 001 1LSB = ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP- 0.1µF 2 CH0 MAX1246 3 CH1 MAX1247 ANALOG INPUTS 4 CH2 5 CH3 6 COM 7 SHDN +2.5V 8 VREF 0.1µF Figure 19. MAX1246/MAX1247 QSPI Connections, External Reference CS ...
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CS SCLK DIN START SEL2 SEL1 SSTRB DOUT Figure 21. TMS320 Serial-Interface Timing Diagram _Ordering Information (continued) † PART TEMP RANGE PIN-PACKAGE MAX1246AEPE -40°C to +85°C 16 Plastic DIP MAX1246BEPE -40°C to +85°C 16 Plastic DIP MAX1246AEEE -40°C to +85°C ...
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Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 ________________________________________________________Package Information 24 ______________________________________________________________________________________ ...
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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 +2 ...