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Details, datasheet, quote on part number:MX7828C
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| Part: | MX7828C |
| Category: | Data Conversion => ADC (Analog to Digital Converters) |
| Description: | CMOS, High-Speed, 8-Bit ADC With 4- or 8-Channel Multiplexer |
| Company: | Maxim Integrated Products |
| Datasheet: | Download MX7828C datasheet File size : 109 kB |
| Request For quote: | Find where to buy MX7828C
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Datasheet text preview:
19-0255; Rev 2; 4/94
CMOS, High-Speed, 8-Bit ADCs with Multiplexer
_______________General Description
The MAX154/MAX158 and MX7824/MX7828 are highs p e e d , multi-channel analog-to-digital converters (ADCs). The MAX154 and MX7824 have four analog input channels, while the MAX158 and MX7828 have eight channels. Conversion time for all devices is 2.5µs. The MAX154/MAX158 also feature a 2.5V on-chip reference, forming a complete high-speed data acquisition system. All four converters include a built-in track/hold, eliminating the need for an external track/hold with many input signals. The analog input range is 0V to +5V, although the ADC operates from a single +5V supply. Microprocessor interfaces are simplified by the ADC's ability to appear as a memory location or I/O port without the need for external logic. The data outputs use latched, three-state buffer circuitry to allow direct connection to a microprocessor data bus or system input port. T h e MX7824 and MX7828 are pin compatible with Analog Devices' AD7824 and AD7828. The MAX154 and MAX158, which feature internal references, are also compatible with these products.
____________________________Features
o One-Chip Data Acquisition System o Four or Eight Analog Input Channels o 2.5µs per Channel Conversion Time o Internal 2.5V Reference (MAX154/MAX158 only) o Built-In Track/Hold Function o 1/2LSB Error Specification o Single +5V Supply Operation o No External Clock o New Space-Saving SSOP Package
MX7824/MX7828
______________Ordering Information
PART MX7824LN MX7824KN MX7824LCWG MX7824KCWG MX7824LCAG TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C PIN-PACKAGE 24 Narrow Plastic DIP 24 Narrow Plastic DIP 24 Wide SO 24 Wide SO 24 SSOP ERROR (LSB) ±1/2 ±1 ±1/2 ±1 ±1/2 ±1
________________________Applications
Digital Signal Processing High-Speed Data Acquisition Telecommunications High-Speed Servo Control Audio Instrumentation
MX7824KCAG 0°C to +70°C 24 SSOP Ordering Information continued on last page.
__________________________________________________________Pin Configurations
TOP VIEW
AIN6 1 AIN4 1 AIN3 2 AIN2 3 AIN1 4 TP (REF OUT) 5 DB0 6 DB1 7 DB2 8 DB3 9 RD 10 INT 11 GND 12 24 VDD 23 NC 22 A0 21 A1 AIN5 2 AIN4 3 AIN3 4 AIN2 5 AIN1 6 TP (REF OUT) 7 DB0 8 DB1 9 DB2 10 DB3 11 RD 12 INT 13 GND 14 28 AIN7 27 AIN8 26 VDD 25 A0
MAX158 X7828
24 A1 23 A2 22 DB7 21 DB6 20 DB5 19 DB4 18 CS 17 RDY 16 VREF+ 15 VREF-
MAX154 X7824
20 DB7 19 DB6 18 DB5 17 DB4 16 CS 15 RDY 14 VREF+ 13 VREF-
DIP/SO/SSOP DIP/SO/SSOP
( ) ARE FOR MAX154/MAX158 ONLY.
________________________________________________________________ Maxim Integrated Products
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CMOS, High-Speed, 8-Bit ADCs with Multiplexer MX7824/MX7828
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VDD to GND .......0V, +10V Voltage at Any Other Pins....GND - 0.3V, VDD + 0.3V Output Current (REF OUT)........30mA Power Dissipation (any package) to +75°C ...........450mW Derate above +25°C by ....6mW/°C Operating Temperature Ranges MX7824, MX7828 KN/LN/KCW_/LCW_ ...........0°C to +70°C BQ/CQ ....-40°C to +85°C TQ/UQ ...-55°C to +125°C Storage Temperature Range .....-65°C to +160°C Lead Temperature (soldering, 10sec) .....+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VREF+ = +5V, VREF- = GND, Mode 0, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER ACCURACY Resolution Total Unadjusted Error (Note 1) No Missing Codes Resolution Channel to Channel Mismatch REFERENCE INPUT Reference Resistance VREF+ Input Voltage Range VREF- Input Voltage Range REFERENCE OUTPUT--MAX154/MAX158 Only (Note 2) Output Voltage Load Regulation Power-Supply Sensitivity Temperature Drift (Note 3) Output Noise Capacitive Load ANALOG INPUT Analog Input Voltage Range Analog Input Capacitance Analog Input Current AINR CAIN IAIN Any channel, AIN = 0V to 5V 0.7 2.4 0.8 1 -1 5 8 VREF45 ±3 0.157 VREF+ V pF µA V/µs V V µA µA pF eN REF OUT TA = +25°C IL = 0mA to 10mA, TA = +25°C VDD ±5%, TA = +25°C MAX15_C MAX15_E MAX15_M 2.47 2.50 -6 ±1 40 40 60 200 0.01 2.53 -10 ±3 70 70 100 µV/rms µF ppm/°C V mV mV 1 VREFGND 4 VDD VREF+ k V V MAX15_A, MX782_L/C/U MAX15_B, MX782_K/B/T 8 ±1/4 8 ±1/2 ±1 Bits LSB Bits LSB SYMBOL CONDITIONS MIN TYP MAX UNITS
Slew Rate, Tracking SR ---- LOGIC INPUTS ( RD , CS , A0, A1, A2) Input High Voltage Input Low Voltage Input High Current Input Low Current Input Capacitance (Note 4) VINH VINL IINH IINL CIN
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CMOS, High-Speed, 8-Bit ADCs with Multiplexer
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VREF+ = +5V, VREF- = GND, Mode 0, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER LOGIC OUTPUTS Output High Voltage Output Low Voltage Three-State Output Current Output Capacitance (Note 4) POWER SUPPLY Supply Voltage Supply Current Power Dissipation Power-Supply Sensitivity Note 1: Note 2: Note 3: Note 4: PSS VDD = ±5% VDD IDD 5V ±5% for specified performance ---- CS = RD = 2.4V 4.75 25 ±1/16 5.25 15 75 ±1/4 V mA mW LSB COUT VOH VOL -- -- DB0DB7, INT; IOUT = -360µA -- -- DB0DB7, INT; RDY IOUT = 1.6mA IOUT = 2.6mA 5 4.0 0.4 0.4 ±3 8 V V µA pF SYMBOL CONDITIONS MIN TYP MAX UNITS
MX7824/MX7828
DB0DB7, RDY; VOUT = 0V to VDD
Total unadjusted error includes offset, full-scale, and linearity errors. Specified with no external load unless otherwise noted. Temperature drift is defined as change in output voltage from +25°C to TMIN or TMAX divided by (25 - TMIN) or (TMAX - 25). Guaranteed by design.
TIMING CHARACTERISTICS (Note 5)
(VDD = +5V, VREF+ = +5V, VREF- = GND, Mode 0, TA = TMIN to TMAX, unless otherwise noted.) TA = +25°C MIN -- -- CS to RD Setup Time -- -- CS to RD Hold Time Multiplexer Address Setup Time Multiplexer Address Hold Time -- CS to RDY Delay Conversion Time (Mode 0) -- Data Access Time After RD Data Access Time -- -- After INT, Mode 0 -- -- -- RD to INT Delay (Mode 1) Data Hold Time Delay Time Between Conversions -- RD Pulse Width (Mode 1) tCSS tCSH tAS tAH tRDY tCRD tACC1 tACC2 tINTH tDH tP tRD CL = 50pF, RL = 5k (Note 6) (Note 6) CL = 50pF (Note 7) 500 60 600 20 40 0 0 0 30 30 1.6 40 2.0 85 50 75 60 500 80 500 TYP MAX MAX15_ _C/E MX782_K/L/B/C MIN 0 0 0 35 60 2.4 110 60 100 70 600 80 400 MAX MAX15_ _M MX782_T/U MIN 0 0 0 40 60 2.8 120 70 100 70 MAX ns ns ns ns ns µs ns ns ns ns ns ns
PARAMETER
SYMBOL
CONDITIONS
UNITS
Note 5: All input control signals are specified with tR = tF = 20ns (10% to 90% of +5V) and timed from a 1.6V voltage level. Note 6: Measured with load circuits of Figure 1 and defined as the time required for an output to cross 0.8V or 2.4V. Note 7: Defined as the time required for the data lines to change 0.5V when loaded with the circuits of Figure 2.
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