AD7152: 12-Bit Capacitance-to-Digital Converter (2 Capacitance Input Channels)
The AD7152/AD7153 are 12-bit sigma-delta (Σ-Δ) capacitance-to-digital converters (CDCs). The capacitance to be measured is connected directly to the device inputs. The architecture features inherent ...続きを見る
AD7152: 12-Bit Capacitance-to-Digital Converter (2 Capacitance Input Channels)
製品概要
The AD7152/AD7153 are 12-bit sigma-delta (Σ-Δ) capacitance-to-digital converters (CDCs). The capacitance to be measured is connected directly to the device inputs. The architecture features inherent high resolution (12-bit no missing codes, up to 12-bit effective resolution) and high linearity (±0.05%). The AD7152/AD7153 have four capacitance input ranges per operation mode, ±0.25 pF to ±2 pF in differential mode and 0.5 pF to 4 pF in single-ended mode.
The AD7152/AD7153 can accept up to 5 pF common-mode capacitance (not changing), which can be balanced by a programmable on-chip, digital-to-capacitance converter (CAPDAC).
The AD7153 has one capacitance input channel, while the AD7152 has two channels. Each channel can be configured as single-ended or differential. The AD7152/AD7153 are designed for floating capacitive sensors.
The AD7152/AD7153 have a 2-wire, I2C®-compatible serial interface. Both parts can operate with a single power supply from 2.7 V to 3.6 V. They are specified over the temperature range of −40°C to +85°C and are available in a 10-lead MSOP package.
Applications
Data Sheet, Rev. 0, 5/08
Features
Capacitance-to-digital converters
- Interfaces to floating sensors
- Resolution down to 0.25 fF (that is, up to 12 ENOB)
- Linearity: 0.05%
- Common-mode (not changing) capacitance up to 5 pF
- Internal clock oscillator
- 2-wire serial interface (I2C-compatible)
- Power 2.7 V to 3.6 V single-supply operation 100 μA current consumption
- See Data Sheet for Additional Information
Diagrams
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- その他
- シンボル&フットプリント
Functional Block Diagram
12-Bit Capacitance-to-Digital Converter (2 Capacitance Input Channels)
AD7152 に関するその他のブロック図
12-Bit Capacitance-to-Digital Converter (2 Capacitance Input Channels)
AD7152 Pin Configuration
Functional Block Diagram for AD7152
AD7156 - Ultralow Power, 1.8 V, 3 mm × 3 mm, 2-Channel Capacitance Converter
| Part# | Resolution (Bits) | T-Put Rate | # Chan | Supply V | Pwr Diss (max) | Input Base C (pF Max) | Cin Range (pF) | Pkg Type | Price* (1000-4999) | Product Description | Interface |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AD7142 | 16 | 27.8SPS | 14 | Single(+2.6 to +3.6), Single(+2.7), Single(+3), Single(+3.3) | 3.6mW | 20 | ±2 | CSP | $1.37 | CAPTouch (TM) Programmable Controller for 2-Electrode Capacitance Sensor with SPI or I2C Interface | I²C/Ser 2-Wire, Ser, SPI |
| AD7143 | 16 | 43.5SPS | 8 | Single(+2.6 to +3.6) | 3.6mW | 20 | ±2 | CSP | $1.25 | CAPTouch (TM) Programmable Controller for 2-Electrode Capacitance Sensor with I2C Interface | I²C/Ser 2-Wire, Ser |
| AD7147 | 16 | 111SPS | 13 | Single(+3), Single(+3.3) | 3.6mW | 20 | ±8 | CSP | $1.30 | CAPTouch (TM) Programmable Controller w/ SPI or I2C Interface for Single-Electrode Cap Sensors | I²C/Ser 2-Wire, Ser, SPI |
| AD7148 | 16 | 4SPS | 8 | Multi(+3.3Anlg, +3.3Dig) | 3.3mW | 20 | ±8 | CSP | $1.21 | Programmable Touch Controller for Single Electrode Capacitance Sensors | I²C/Ser 2-Wire, Ser |
| AD7150 | 12 | 100SPS | 2 | Single(+2.7 to +3.6) | 0.43mW | 10 | ±4 | SOP | $1.37 | Ultra-Lo Pwr, 2-Ch Capacitance Converter for Proximity Sensing Applications | I²C/Ser 2-Wire, Ser |
| AD7151 | 12 | 100SPS | 1 | Single(+2.7 to +3.6) | 0.3mW | 10 | ±4 | SOP | $1.37 | Ultra-Low Power, 1-Ch, Capacitance Converter for Proximity Sensing Applications | I²C/Ser 2-Wire, Ser |
| AD7156 | 12 | 100SPS | 2 | Single(+1.8), Single(+2.5), Single(+2.7), Single(+3), Single(+3.3), Single(+3.6) | 306µW | - | - | CSP | $1.25 | Ultralow Power, 1.8 V, 3 mm × 3 mm, 2-Channel Capacitance Converter | I²C/Ser 2-Wire, Ser |
| AD7745 | 24 | 90SPS | 1 | Single(+2.7 to +5.25) | 4.25mW | 17 | ±4 | SOP | $4.66 | 24-Bit, Cap-to-Dig Conv. w/ 1 SE/Diff Capacitive Input Ch for Interface to Dual Electrode Cap Sensor | I²C/Ser 2-Wire, Ser |
| AD7746 | 24 | 90SPS | 2 | Single(+2.7 to +5.25) | 4.25mW | 17 | ±4 | SOP | $5.01 | 24-bit, Cap-to-Dig Conv. w/ 2 SE/Diff Capacitive Input Ch for interface to Dual Electrode Cap Sensor | I²C/Ser 2-Wire, Ser |
| AD7747 | 24 | 45.5SPS | 1 | Single(+2.7 to +5.25) | 4.25mW | 17 | ±8 | SOP | $4.66 | 24-bit, Cap-to-Dig Conv w/1 SE/Diff Capacitive Input Ch for interface to Single Electrode Cap Sensor | I²C/Ser 2-Wire, Ser |
* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S.
Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.
AD7152 モデル一覧
| モデル | 製品状況 | パッケージ | ピン数 | 動作 温度範囲 |
価格* (1000 pcs.) |
Production** Availability |
RoHS互換 | サンプル・カート | 購入カート |
|---|---|---|---|---|---|---|---|---|---|
| AD7152BRMZ | 製造中 | 10 ld MSOP | 10 | 工業用 | $1.97 | 12/05/2008 |
Y
成分表 |
カートに入れる | カートに入れる |
| AD7152BRMZ-REEL | 製造中 | 10 ld MSOP | 10 | 工業用 | $1.97 | - |
Y
成分表 |
お問い合わせ | カートに入れる |
| EVAL-AD7152EBZ | 製造中 | EVALUATION BOARDS | - | TBD | $70.33 | 12/05/2008 | Y | お問い合わせ | カートに入れる |
Help
- 発売前:このモデルはまだ全面的な製造には至っていませんが、サンプルは入手できます。
- 製造:現在、このモデルは製造しておりますので、製品の購入とサンプルの入手が可能です。
- 最終販売:このモデルは製造中止が予定されておりますが、まだしばらくの間は販売しております。
- 製造中止製品:この製品はすでに製造中止となっており、販売しておりません。
パッケージの詳細図および化学組成については、パッケージのサイトをご覧ください
モデル名によりそれぞれ動作温度範囲が異なる場合がありますので、詳細についてはデータシートでご確認ください。
- 商用温度範囲:0~70℃
- 軍用温度範囲:-55~+125℃
- 拡張工業用温度範囲(1):-40~+85℃
拡張工業用温度範囲(2):-40~+105℃
拡張工業用温度範囲(3):-40~+125℃


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