MAX173CWG+ ,CMOS, 5µs, 10-Bit ADC with ReferenceFeatures
. 12-Bit Resolution and 10-Bit Linearity
. Sus Conversion Time
. On-Chip i40ppm/°C Volt ..
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MAX173CWG+
CMOS, 5µs, 10-Bit ADC with Reference
AAL/ll 2C Ls'llyfl
Complete su, CMOS 10-Bit A/D Converter
General Description
The MAX173 is a complete, IO-bit linear analog-to-
digital converter (ADC) that combines high speed, low
power consumption, and an on-chip voltage reference.
The conversion time is Sus. The buried zener reference
provides low drift and low noise performance.
External component requirements are limited to only
decoupling capacitors for the power supply and refer-
ence voltages. On-chip clock circuitry is also included
which can either be driven from an external source, or
in' stand-alone applications, from a crystal.
The MAX173 uses a standard microprocessor interface
architecture. Three-state data_Qutputs are controlled
by Read (RD) and Chip Select (CS) inputs. Data access
and bus release times of 90ns and 75ns respectively
ensure compatibility with most popular microproces-
sors without resorting to wait states,
Applications
Digital Signal Processing (DSP)
High Accuracy Process Control
High Speed Data Acquisition
Electro-Mechanical Systems
- Functional Diagram
mu yes, Am
Is I2 II
Features
. 12-Bit Resolution and 10-Bit Linearity
. Sus Conversion Time
. On-Chip +40ppm/°C Voltage Reference
. 90ns Access Time
. 215mw (Max) Power Consumption
. 24-Lead Narrow DIP and Wide SO Packages
Ordering Information
PART TEMP. RANGE PACKAGE'
_MAX1_7_3CNG 0°C to +70°C Plastic DIP
MAX173CWG 0°C to -7(Y'C Wide so
MAX173C/D 0°C to +70°C Dice"
MAX173ENG -40''C to +85°C Plastic DIP
MAX173EWG -40°C to +85°C Wide SO
MAX173MRG -55''C to +125°C CEHDIP
* All devices - 24 lead packages
.. Consult factory for dice specifications
- Pin Configurations
Top View
' Li.“ m [I . V El Van
REFERENCE VREF CE El Ilss
suctiss IE _ -
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MAX173 Ilrillgttrt nil LC E M
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[VI A X IIVI Maxim Integrated Products 1
MAXIM is a registered trademark of Maxim Integrated Products.
http://www.loq.com/
EZLXVMJ
Complete 5,us CMOS 10-Bit A/D Converter
tlt ABSOLUTE MAXIMUM RATINGS
N V0910 DGND ............................ -0.3V to +7V Operating Temperature Ranges
F Vss to DGND ............................. +0.3V to -17V MAX173XC ............................. 0°C to +70°C
AGND to DGND ....................... -0,3V, l/oo + 0.3V MAX173XE ........................... -40oC to +85°C
AIN to AGND .............................. -15V to +15V MAX173XM .......................... -55"C to 4 125°C
Digital Input Voltage to DGND .......... -OBV, VDD + 0BV Storage Temperature Range ............ -65oC to +160°C
E (Pins 17, 19-21) Power Dissipation (any Package) to +75°C ...... 1000mW
Digital Output Voltage to DGND ......... -fh3V, VDD + 0.3V Derates Above +75°C by ..................... 10mW/°C
(Pins 4-11, 13-16, 18, 22) Lead Temperature (Soldering 10 seconds) ........ +300°C
Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of me dewce at these or any other conditions above those indicated in the operational sections of the specifications IS not
implied. Exposure to absolute manmum rating conditions for extended periods may affect device reliability,
ELECTRICAL CHARACTERISTICS
(Von = HN i 5%, Vss = -12V or -15V 1 5%; Slow Memory Made; T, = TMIN to TMAX unless otherwise noted, tco; : 2.5MHz.)
PARAMETER [SYMBOL l CONDITIONS MIN TYP MAX UNITS
CCURACY
Resolution . 12 Bits
No Missing Code Resolution 10 Bits
Integral Non-Linearity INL i005 %FSR
Offset Error (Note 1) f 15 mV
Full Scale Error (Note 2) t0.4 %
Full Scale Tempco (Notes 3, 4) 145 ppm/°C
ANALOG INPUT
Input Voltage Range 0 5 V
Input Current AIN = 0V to +5V 35 mA
INTERNAL REFERENCE
vm Output Voltage TA = 25°C . -5d -5.25 -5.3 v
VRE; Output Tempco (Note 5) :40 - ppm/°C
Output Current Sink Capability (Note 6) 5 mA
LOGIC INPUTS
Input Low Voltage vIL C's, i). HBEN, CLKIN (18 v -
Wput High Voltage Vo C-S, iil5, HBEN, CLKIN 2.4
mpu/Capacitance (Note 7) cm & M. HBEN, CLKIN 10 pr"
Input Current I.~ gig HBEN VIN : 0 to Vor, Il/l PA
Tome OUTPUTS -
Output Low Voltage VOL D11-D0/8, gijgi, CLKOUT ISM = 1.6 mA 0.4
Etput High Voltage - Vor, D11-D0/8, WSY, CLKOUT lsouncg = 200PA 4 v
23:22 State Leakage ILKG D11-D0/8, vow = OV to V00 :10 psA
2;td11icaetyloute"/t Cour 15 pF
CONVERSION TIME - _ -
MAX173 ‘CONV jtg,11o/e):es(1ji'/i"f31ycoyfhi'y)c, 4.8 j', MS
2 - lVI/le/VI
