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MAX1298, MAX1298A, MAX1298B, MAX1298C, MAX1299, MAX1299A, MAX1299B, MAX1299C
12-Bit Serial-Output Temperature Sensors with 5-Channel ADC
12-Bit ADCs with ±1° C Internal Temperature Sensor Also Measure Remote Temperatures
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Status
Active: In Production.
Description
The MAX1298/MAX1299 implement local and remote temperature sensing with 12-bit resolution, using +5V and +3V supply voltages, respectively. Accuracy is ±1°C from 0 to +70°C, with no calibration needed. The devices feature an algorithmic switched-capacitor analog-to-digital converter (ADC), an on-chip clock, and a 3-wire serial interface compatible with SPI™, QSPI™, and MICROWIRE™.
The MAX1298/MAX1299 also perform fully differential voltage measurements with 12-bit resolution and separate track-and-hold (T/H) for positive and negative inputs. Both devices accept versatile input modes consisting of two 3-channel signal pairs, five 1-channel signals relative to a floating common, or VDD /4 relative to ground. An external reference may be used for more accurate voltage measurements.
Typical power consumption is only 1.3mW (MAX1299). A shutdown mode and two standby modes provide multiple strategies for prolonging battery life in portable applications that require limited sampling throughput.
The MAX1298/MAX1299 are available in 16-pin SSOP packages.
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Data Sheet
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Key Features
- Local and Remote Temperature Sensing
- 12-Bit Resolution for Temperature and Voltage Inputs
- ±1°C Accuracy from -40°C to +85°C
- Fully Differential Inputs
- Single-Supply Operation
- +4.75V to +5.25V (MAX1298)
- +2.7V to +3.6V (MAX1299)
- 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface
- Internal Precision Voltage Reference
- 2.50V (MAX1298)
- 1.20V (MAX1299)
- Space-Saving 16-Pin SSOP Package
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Applications/Uses
- Handheld Instruments (PDAs, Palmtops)
- Industrial Process Controls
- Medical Equipment
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Key Specifications:
| Precision ADCs (< 5Msps) |
| Part Number |
Resolution
(bits) |
Input Chan. |
Data Bus
(bits) |
Diff/S.E. Input |
Internal VREF
(V) |
External VREF
(V) |
External VREF
(V) |
Unipolar VIN
(V) |
Bipolar VIN
(±V) |
DNL
(±LSB) |
INL
(±LSB) |
Package/Pins |
Budgetary Price |
| ADC |
nominal |
min |
max |
max |
max |
See Notes |
| MAX1298 |
12 |
5 |
SPI |
Diff. Only |
2.5 |
0.8 |
2.5 |
5 |
5 |
1 |
1 |
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$4.42 @1k |
| MAX1299 |
1.2 |
1.2 |
3 |
2.4 |
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$4.42 @1k |
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See All Precision ADCs (< 5Msps) (417)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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| Temperature Sensors |
| Part Number |
Sensor Type |
Interface |
Accuracy
(±°C) |
Parasite Pwr. |
Temp. Resolution
(bits) |
Oper. Temp.
(°C) |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max w/pins |
See Notes |
| MAX1298 |
Local |
3-Wire/SPI |
1 |
No |
12 |
-40 to +85 |
50 |
$4.42 @1k |
| MAX1299 |
$4.42 @1k |
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See All Temperature Sensors (103)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Functional Diagram
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-1726
Rev 0;
2000-07-31
This page last modified: 2009-10-27
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