MAX1253 Datasheet PDF - Maxim Integrated
| Part Number | MAX1253 | |
| Description | Stand-Alone / 10-Channel / 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor | |
| Manufacturers | Maxim Integrated | |
| Logo |  |
|
|
There is a preview and MAX1253 download ( pdf file ) link at the bottom of this page. Total 29 Pages | ||
Preview 1 page No Preview Available !
19-2838; Rev 0; 4/03
Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and VDD Monitor
General Description
The MAX1253/MAX1254 are stand-alone, 10-channel (8
external, 2 internal) 12-bit system monitor ADCs with
internal reference. A programmable single-ended/dif-
ferential mux accepts voltage and remote-diode tem-
perature-sensor inputs. These devices independently
monitor the input channels without microprocessor
interaction and generate an interrupt when any variable
exceeds user-defined limits. The MAX1253/MAX1254
configure both high and low limits, as well as the num-
ber of fault cycles allowed, before generating an inter-
rupt. These ADCs can also perform recursive data
averaging for noise reduction. Programmable wait inter-
vals between conversion sequences allow the selection
of the sample rate.
At the maximum sampling rate of 94ksps (auto mode,
single channel enabled), the MAX1253 consumes only
5mW (1.7mA at 3V). AutoShutdownTM reduces supply
current to 190µA at 2ksps and to less than 8µA at 50sps.
Stand-alone operation, combined with ease of use in a
small package (16-pin TSSOP), makes the MAX1253/
MAX1254 ideal for multichannel system-monitoring
applications. Low power consumption also makes
these devices a good fit for hand-held and battery-pow-
ered applications.
Applications
System Supervision
Remote Telecom Networks
Server Farms
Remote Data Loggers
Features
o Monitor 10 Signals Without Processor
Intervention
o Eight External Channels Programmable as
Temperature or Voltage Monitors
o Intelligent Circuitry for Reliable Autonomous
Measurement
Programmable Digital Averaging Filter
Programmable Fault Counter
o Precision Measurements
12-Bit Resolution
±1 LSB INL, ±1 LSB DNL
±0.75°C Temperature Accuracy (typ)
o Flexible
Automatic Channel Scan Sequencer with
Programmable Intervals
Programmable Inputs: Single Ended/Differential,
Voltage/Temperature
Programmable Wait State
o Internal 2.5V/4.096V Reference
(MAX1253/MAX1254)
o Remote Temperature Sensing Up to 10m
(Differential Mode)
o Single 3V or 5V Supply Operation
o Small 16-Pin TSSOP Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX1253AEUE*
-40°C to +85°C
16 TSSOP
MAX1253BEUE
-40°C to +85°C
16 TSSOP
MAX1254AEUE*
-40°C to +85°C
16 TSSOP
MAX1254BEUE
-40°C to +85°C
16 TSSOP
*Future product—contact factory for availability.
Selector Guide
PART
INL (LSB)
TEMP
ERROR (°C)
SUPPLY
VOLTAGE (V)
MAX1253AEUE*
MAX1253BEUE
±1
±1
±1.0
±3.0
2.7 to 3.6
2.7 to 3.6
MAX1254AEUE*
±1
±1.0
4.5 to 5.5
MAX1254BEUE
±1
±2.5
4.5 to 5.5
*Future product—contact factory for availability.
Typical Application Circuit appears at end of data sheet.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
TOP VIEW
Pin Configuration
AIN0 1
AIN1 2
AIN2 3
AIN3 4
AIN4 5
AIN5 6
AIN6 7
AIN7 8
MAX1253
MAX1254
16 CS
15 SCLK
14 DIN
13 VDD
12 GND
11 DOUT
10 INT
9 REF
16 TSSOP
________________________________________________________________ Maxim Integrated Products 1
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.
|
| |
 
Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and VDD Monitor
TIMING CHARACTERISTICS
(VDD = +2.7V to +3.6V (MAX1253), VDD = +4.5V to +5.5V (MAX1254), TA = TMIN to TMAX, unless otherwise noted.) (Figures 1, 2, and 4)
PARAMETER
SCLK Clock Period
SCLK Pulse Width High Time
SCLK Pulse Width Low Time
DIN to SCLK Setup Time
DIN to SCLK Hold Time
CS Fall to SCLK Rise Setup
SCLK Rise to CS Rise Hold
SCLK Fall to DOUT Valid
CS Rise to DOUT Disable
CS Fall to DOUT Enable
CS Pulse Width High
SYMBOL
tCP
tCH
tCL
tDS
tDH
tCSS
tCSH
tDOV CL = 30pF
tDOD CL = 30pF
tDOE CL = 30pF
tCSW
CONDITIONS
MIN TYP MAX UNITS
100 0.5
ns
45 ns
45 ns
25 ns
0 ns
25 ns
50 ns
50 ns
40 ns
40 ns
40 ns
Note 1: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the gain and offset errors
have been calibrated.
Note 2: Offset nulled.
Note 3: In reference mode 00, the reference system powers up for each temperature measurement. In reference mode 01, the ref-
erence system powers up once per sequence of channels scanned. If a sample wait <80µs is programmed, the reference
system is on all the time. In reference mode 10, the reference system is on all the time (see Table 7).
Note 4: No external capacitor on REF.
Note 5: The operational input voltage range for each individual input of a differentially configured pair (AIN0–AIN7) is from GND to
VDD. The operational input voltage difference is from -VREF/2 to +VREF/2.
Note 6: See Figure 3 and the Sampling Error vs. Input Source Impedance graph in the Typical Operating Characteristics section.
Note 7: Grade A tested at +10°C and +55°C. -20°C to +85°C and -40°C to +85°C specifications guaranteed by design. Grade B
tested at +25°C. TMIN to TMAX specification guaranteed by design.
Note 8: External temperature measurement mode using an MMBT3904 (Diodes Inc.) as a sensor. External temperature sensing
from -40°C to +85°C; MAX1253/MAX1254 held at +25°C.
Note 9: Performing eight single-ended external channels’ temperature measurements, an internal temperature measurement, and
an internal VDD measurement with no sample wait results in a conversion rate of 2ksps per channel.
Note 10: Performing eight single-ended voltage measurements, an internal temperature measurement, and an internal VDD measure-
ment with no sample wait results in a conversion rate of 7ksps per channel.
Note 11: Performing eight single-ended voltage measurements, an internal temperature measurement, and an internal VDD measure-
ment with maximum sample wait results in a conversion rate of 3ksps per channel.
Note 12: Defined as the shift in the code boundary as a result of supply voltage change. VDD = min to max; full-scale input, mea-
sured using external reference.
_______________________________________________________________________________________ 5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MAX1253 electronic component. |
| Information | Total 29 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ MAX1253.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | MFRS |
| MAX125 | The function is 2x4-Channel / Simultaneous-Sampling 14-Bit DAS. Maxim Integrated | |
| MAX12527 | The function is Dual 65Msps 12-Bit IF/Baseband ADC. Maxim Integrated Products |  |
| MAX12528 | The function is Dual 80Msps 12-Bit IF/Baseband ADC. Maxim Integrated Products | |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
MAX1
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||