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データコンバータ 
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デジタル-アナログコンバータ(DAC)
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Maxim Confidential 
MyMaxim のご登録製品の詳細
The MAX5380/MAX5381/MAX5382 are low-cost, 8-bit digital-to-analog converters (DACs) in miniature 5-pin SOT23 packages, with a simple 2-wire serial interface that allows communication with multiple devices. The MAX5380 has an internal +2V reference and operates from a +2.7V to +3.6V supply. The MAX5381 has an internal +4V reference and operates from a +4.5V to +5.5V supply. The MAX5382 operates over the full +2.7V to +5.5V supply range and has an internal reference equal to 0.9 x VDD.
The fast-mode I²C*-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnect complexity in many applications. Each device is available with one of four factory-preset addresses (see Selector Guide). These DACs also include an output buffer, a low-power shutdown mode, and a power-on reset that ensures the DAC outputs are at zero when power is initially applied. In shutdown mode, supply current is reduced to less than 1µA and the output is pulled down to GND with a 10kΩ resistor.
The fast-mode I²C*-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnect complexity in many applications. Each device is available with one of four factory-preset addresses (see Selector Guide). These DACs also include an output buffer, a low-power shutdown mode, and a power-on reset that ensures the DAC outputs are at zero when power is initially applied. In shutdown mode, supply current is reduced to less than 1µA and the output is pulled down to GND with a 10kΩ resistor.
主な機能
- 8-Bit Accuracy in a Miniature 5-Pin SOT23
- Wide +2.7V to +5.5V Supply Range (MAX5382)
- Low 230µA max Supply Current
- 1µA Shutdown Mode
- Buffered Output Drives Resistive Loads
- Low-Glitch Power-On Reset to Zero DAC Output
- Fast I²C-Compatible Serial Interface
- <±5% Full-Scale Error (MAX5382)
- <±1LSB max INL/DNL
アプリケーション/用途
- 自動利得制御
- 自動オフセット調整
- 自動チューニング(VCO)
- パワーアンプバイアス制御
- プログラマブルスレッショルドレベル
Parametric specs for Precision DACs (< 1MHz)
| Resolution (bits) | 8 |
| # Channels | 1 |
| Interface | Serial - I2C |
| Output Type | Voltage- Buffered |
| Reference | Int. |
| INL (±LSB) (max) | 1 |
| Supply Range (V) (min) | 2.7 |
| Supply Range (V) (max) | 3.6 |
| ICC (mA) (max) | 0.23 |
| Settling Time (µs) (typ) | 20 |
| Package/Pins | SOT23/5 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | $0.90 @1k |
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技術資料
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説明
MAX9611PMB1ペリフェラルモジュールは、12ビットADCとオペアンプを内蔵した電流検出アンプのMAX9611を8ビットDACのMAX5380とともに、I²C通信用に設定可能なPmod™対応拡張ポートを利用する任意のシステムとインタフェースするために必要なハードウェアを提供します。このICは、外付けpチャネルFETと電流検出抵抗で構成され、最大1Aの電流を処理可能な電流制限回路を形成します。8ビットDAC (U1)は、I²Cバスを介してホストによって電流制限ポイントをプログラム設定するために使用されます。プログラマブル電流制限機能の提供に加え、ICの内蔵ADCによって負荷電流/電圧およびセットポイント電圧が測定され、I²Cバスを介してホストによって読み取ることができます。
MAX9611 ICの動作の詳細については、このICのデータシートを参照してください。
詳細を見る 特長
- 設定可能な電流制限：1A (max)
- 2つの電流範囲(ジャンパ選択可能)
- 負荷電流、負荷電圧、およびセットポイントの測定と読取り
- 電源：30V (max)
- ジャンパ選択可能なI²Cアドレス設定(MAX9611用)
- 6ピンPmod対応コネクタ(I²C)
- 2次ヘッダによってI²Cバス上で追加モジュールをデイジーチェーン接続可能
- 移植しやすいCで記述したサンプルソフトウェア
- RoHS準拠
- 実証済みPCBレイアウト
- 完全実装および試験済み
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パラメーター
Parametric specs for Precision DACs (< 1MHz)
| Resolution (bits) | 8 |
| # Channels | 1 |
| Interface | Serial - I2C |
| Output Type | Voltage- Buffered |
| Reference | Int. |
| INL (±LSB) (max) | 1 |
| Supply Range (V) (min) | 2.7 |
| Supply Range (V) (max) | 3.6 |
| ICC (mA) (max) | 0.23 |
| Settling Time (µs) (typ) | 20 |
| Package/Pins | SOT23/5 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | $0.90 @1k |
主な機能
- 8-Bit Accuracy in a Miniature 5-Pin SOT23
- Wide +2.7V to +5.5V Supply Range (MAX5382)
- Low 230µA max Supply Current
- 1µA Shutdown Mode
- Buffered Output Drives Resistive Loads
- Low-Glitch Power-On Reset to Zero DAC Output
- Fast I²C-Compatible Serial Interface
- <±5% Full-Scale Error (MAX5382)
- <±1LSB max INL/DNL
アプリケーション/用途
- 自動利得制御
- 自動オフセット調整
- 自動チューニング(VCO)
- パワーアンプバイアス制御
- プログラマブルスレッショルドレベル
説明
The MAX5380/MAX5381/MAX5382 are low-cost, 8-bit digital-to-analog converters (DACs) in miniature 5-pin SOT23 packages, with a simple 2-wire serial interface that allows communication with multiple devices. The MAX5380 has an internal +2V reference and operates from a +2.7V to +3.6V supply. The MAX5381 has an internal +4V reference and operates from a +4.5V to +5.5V supply. The MAX5382 operates over the full +2.7V to +5.5V supply range and has an internal reference equal to 0.9 x VDD.
The fast-mode I²C*-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnect complexity in many applications. Each device is available with one of four factory-preset addresses (see Selector Guide). These DACs also include an output buffer, a low-power shutdown mode, and a power-on reset that ensures the DAC outputs are at zero when power is initially applied. In shutdown mode, supply current is reduced to less than 1µA and the output is pulled down to GND with a 10kΩ resistor.
The fast-mode I²C*-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnect complexity in many applications. Each device is available with one of four factory-preset addresses (see Selector Guide). These DACs also include an output buffer, a low-power shutdown mode, and a power-on reset that ensures the DAC outputs are at zero when power is initially applied. In shutdown mode, supply current is reduced to less than 1µA and the output is pulled down to GND with a 10kΩ resistor.
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