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Description
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The MAX1492/MAX1494 low-power, 3.5- and 4.5-digit,
analog-to-digital converters (ADCs) with integrated liquid
crystal display (LCD) drivers operate from a single 2.7V
to 5.25V power supply. They include an internal reference,
a high-accuracy on-chip oscillator, and a triplexed
LCD driver. An internal charge pump generates the negative
supply needed to power the integrated input buffer
for single-supply operation. The ADC is configurable for
either a ±2V or ±200mV input range and outputs its conversion
results to an LCD and/or to a microcontroller
(µC). µC communication is facilitated through an
SPI™-/QSPI™-/MICROWIRE™-compatible serial interface.
The MAX1492 is a 3.5-digit (±1999 count) device,
and the MAX1494 is a 4.5-digit (±19,999 count) device.
The MAX1492/MAX1494 do not require external-precision
integrating capacitors, autozero capacitors, crystal
oscillators, charge pumps, or other circuitry required
with dual-slope ADCs (commonly used in panel meter
circuits).
These devices also feature on-chip buffers for the differential
signal and reference inputs, allowing direct
interface with high-impedance signal sources. In addition,
they use continuous internal-offset calibration and
offer >100dB simultaneous rejection of 50Hz and 60Hz
line noise. Other features include data hold and peak
hold, overrange and underrange detection, and a lowbattery
monitor.
The MAX1494 comes in a 32-pin, 7mm x 7mm TQFP
package, and the MAX1492 comes in 28-pin SSOP and
28-pin PDIP packages. All devices in this family operate
over the 0°C to +70°C commercial temperature range.
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| MAX1492 |
Free
Sample |
Buy |
Status |
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Package:
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TYPE PINS FOOTPRINT
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DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis |
MAX1492CNI
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Active
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PDIP(N);28 pin;289.5 mm²
Outline Drawing: 21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N28-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX1492CNI+
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Active
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PDIP(N);28 pin;289.5 mm²
Outline Drawing: 21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N28+2*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis
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MAX1492CAI+
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Active
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SSOP;28 pin;81.6 mm²
Outline Drawing: 21-0056 (PDF)
Land Pattern: 90-0095 (PDF)
Use pkgcode/variation: A28+1*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis
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MAX1492CAI
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Active
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SSOP;28 pin;81.6 mm²
Outline Drawing: 21-0056 (PDF)
Land Pattern: 90-0095 (PDF)
Use pkgcode/variation: A28-1*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX1492CAI-T
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Active
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Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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MAX1492CAI+T
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Active
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Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX1494 |
Free
Sample |
Buy |
Status |
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Package:
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TYPE PINS FOOTPRINT
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DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis |
MAX1494EVC16
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Active
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Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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MAX1494CCJ
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Active
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LQFP;32 pin;82.8 mm²
Outline Drawing: 21-0054 (PDF)
Land Pattern: 90-0111 (PDF)
Use pkgcode/variation: C32-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis
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MAX1494CCJ-T
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Active
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Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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MAX1494CCJ+T
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Active
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Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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MAX1494CCJ+
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Active
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LQFP;32 pin;82.8 mm²
Outline Drawing: 21-0054 (PDF)
Land Pattern: 90-0111 (PDF)
Use pkgcode/variation: C32+2*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis
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