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主な特長
アプリケーション/用途
Parametric specs for Display-Oriented ADCs
| Resolution (±Counts) | 4000 |
| # Input Channels | 1 |
| Conv. Rate (ksps) (max) | 0.02 |
| Data Bus | µP/4 |
| Diff/S.E. Input | Diff. Only |
| External VREF (V) (min) | 0 |
| External VREF (V) (max) | 6 |
| Unipolar VIN (V) (max) | 6 |
| DNL (±LSB) | 0.2 |
| INL (±LSB) | 16 |
| Package/Pins | MQFP/44 PDIP/40 PLCC/44 |
| Budgetary Price (See Notes) | 16.58 |
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Technical Docs
| データシート | 3 3/4桁DMM回路 | Jan 17, 2022 |
パラメーター
Parametric specs for Display-Oriented ADCs
| Resolution (±Counts) | 4000 |
| # Input Channels | 1 |
| Conv. Rate (ksps) (max) | 0.02 |
| Data Bus | µP/4 |
| Diff/S.E. Input | Diff. Only |
| External VREF (V) (min) | 0 |
| External VREF (V) (max) | 6 |
| Unipolar VIN (V) (max) | 6 |
| DNL (±LSB) | 0.2 |
| INL (±LSB) | 16 |
| Package/Pins | MQFP/44 PDIP/40 PLCC/44 |
| Budgetary Price (See Notes) | 16.58 |
主な特長
- 40,000 Count Resolution
- 0.025% Accuracy
- 20 Conversions per Second
- Microprocessor Interface
- 100µA Operating Supply Current
- Low External Component Count
- 5µV Resolution
- Demonstration Kit Available MAX134/DEMO
アプリケーション/用途
- データ収集システム
- データロガー
- デジタルパネルメータ
- 重量計
説明
The MAX133 and MAX134 are integrating A/D converters for 3¾ digit multimeters and data acquisition systems such as data loggers and weigh scales. The A/D's internal resolution is ±40,000 counts. An extra digit is supplied as a guard digit to allow autozero or tare of a 4000 count displayed reading to 1/10 of a displayed count. The conversion time is 50ms.
The MAX133 and MAX134 differ only in their microprocessor interface. The MAX133 has a 4 bit multiplexed address/data bus while the MAX134 has 3 separate address lines and a 4 bit bidirectional data bus. Both devices can be used with 4, 8, and 16 bit microprocessors.
When controlled by a microprocessor, the MAX133 and MAX134 can perform auto-ranging measurements from ±400.0mV to ±4000V full scale. External attenuator resistors are required, but range switching is performed by the A/D.
The power supply is typically a 9V battery or ±5V. Operating current is typically 100µA while standby current is only 25µA.
The MAX133 and MAX134 differ only in their microprocessor interface. The MAX133 has a 4 bit multiplexed address/data bus while the MAX134 has 3 separate address lines and a 4 bit bidirectional data bus. Both devices can be used with 4, 8, and 16 bit microprocessors.
When controlled by a microprocessor, the MAX133 and MAX134 can perform auto-ranging measurements from ±400.0mV to ±4000V full scale. External attenuator resistors are required, but range switching is performed by the A/D.
The power supply is typically a 9V battery or ±5V. Operating current is typically 100µA while standby current is only 25µA.
Technical Docs
| データシート | 3 3/4桁DMM回路 | Jan 17, 2022 |
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