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MAX1226, MAX1228, MAX1230
12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference
16-Channel, 12-/10-Bit ADCs Feature Internal Temp Sensor and Minimize Microprocessor I/O Requirements
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Status
Description
The MAX1226/MAX1228/MAX1230 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and an internal temperature sensor. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX1230 has 16 input channels, the MAX1228 has 12 input channels, and the MAX1226 has 8 input channels. All input channels are configurable for single-ended or differential inputs in unipolar or bipolar mode. All three devices operate from a +5V supply and contain a 10MHz SPI™/QSPI™/MICROWIRE™-compatible serial port.
The MAX1230 is available in 28-pin 5mm x 5mm QFN with exposed pad and 24-pin QSOP packages. The MAX1226/MAX1228 are only available in QSOP packages. All three devices are specified over the extended -40°C to +85°C temperature range.
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Data Sheet
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An evaluation kit is available: MAX11633EVSYS, MAX11635EVSYS, MAX1231BEVSYS
Key Features
- Internal Temperature Sensor (±0.7°C Accuracy)
- 16-Entry First-In/First-Out (FIFO)
- Analog Multiplexer with True Differential Track/Hold
- 16-, 12-, 8-Channel Single Ended
- 8-, 6-, 4-Channel True Differential (Unipolar or Bipolar)
- Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing Codes Over Temperature
- Scan Mode, Internal Averaging, and Internal Clock
- Low-Power Single +5V Operation
- Internal 4.096V Reference or External Differential Reference
- 10MHz 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface
- Space-Saving 28-Pin 5mm x 5mm Thin QFN Package
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Applications/Uses
- Data Acquisition Systems
- Data Logging
- Industrial Control Systems
- Instrumentation
- Patient Monitoring
- System Supervision
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Key Specifications:
| Precision ADCs (< 5Msps) |
| Part Number |
Resolution
(bits) |
Input Chan. |
Conv. Rate
(ksps) |
Data Bus
(bits) |
Diff/S.E. Input |
Internal VREF
(V) |
External VREF
(V) |
External VREF
(V) |
Unipolar VIN
(V) |
Bipolar VIN
(±V) |
SNR
(dB) |
SINAD
(dB) |
THD
(dB) |
SFDR
(dB) |
DNL
(±LSB) |
INL
(±LSB) |
Package/Pins |
Budgetary Price |
| ADC |
max |
nominal |
min |
max |
max |
max |
See Notes |
| MAX1226 |
12 |
8 |
300 |
SPI |
Both |
4.096 |
1 |
5.25 |
4.096 |
2.048 |
70 |
70 |
-82 |
80 |
1 |
1 |
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$6.22 @1k |
| MAX1228 |
12 |
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$6.86 @1k |
| MAX1230 |
16 |
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$5.43 @1k |
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See All Precision ADCs (< 5Msps) (423)
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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
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Information Index
Document Ref.: 19-2852
Rev 5;
2011-01-31
This page last modified: 2011-01-31
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