參數(shù)資料
型號(hào)： 933768140118
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO16
封裝： 7.50 MM, PLASTIC, MS-013, SOT-162-1, SO-16
文件頁(yè)數(shù)： 28/28頁(yè)
文件大小： 139K
代理商： 933768140118
2003 Jan 27
9
Philips Semiconductors
Product specication
8-bit A/D and D/A converter
PCF8591
7.4
A/D conversion
The A/D converter makes use of the successive
approximation conversion technique. The on-chip D/A
converter and a high-gain comparator are used
temporarily during an A/D conversion cycle.
An A/D conversion cycle is always started after sending a
valid read mode address to a PCF8591 device. The A/D
conversion cycle is triggered at the trailing edge of the
acknowledge clock pulse and is executed while
transmitting the result of the previous conversion (see
Fig.9).
Once a conversion cycle is triggered an input voltage
sample of the selected channel is stored on the chip and is
converted to the corresponding 8-bit binary code. Samples
picked up from differential inputs are converted to an 8-bit
twos complement code (see Figs 10 and 11).
The conversion result is stored in the ADC data register
and awaits transmission. If the auto-increment flag is set
the next channel is selected.
The first byte transmitted in a read cycle contains the
conversion result code of the previous read cycle. After a
Power-on reset condition the first byte read is a
hexadecimal 80. The protocol of an I2C-bus read cycle is
shown in Chapter 8, Figs 16 and 17.
The maximum A/D conversion rate is given by the actual
speed of the I2C-bus.
handbook, full pagewidth
S
1
A
ADDRESS
DATA BYTE 1
DATA BYTE 2
DATA BYTE 0
12
9
81
91
PROTOCOL
SCL
SDA
conversion of byte 2
conversion of byte 3
conversion of byte 1
transmission
of previously
converted byte
sampling byte 2
sampling byte 3
sampling byte 1
transmission
of byte 1
transmission
of byte 2
MBL829
Fig.9 A/D conversion sequence.
相關(guān)PDF資料
PDF描述
933768140112 SPECIALTY ANALOG CIRCUIT, PDSO16
933772-023 SIMPLEX SMA CONNECTOR
936045-007 SIMPLEX SMA CONNECTOR
936047-013 SIMPLEX SMA CONNECTOR
936047-018 SIMPLEX SMA CONNECTOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
93378-003 制造商:FCI 功能描述:MEMORY CARD RECEPTACLE - Bulk
9337-A17R 制造商:GC Electronics 功能描述:
9337C 制造商:Hubbell Premise Wiring 功能描述:
9337-CHR-100 制造商:Belden Inc 功能描述:
9337CKE100M 制造商:RFMD 制造商全稱(chēng):RF Micro Devices 功能描述:380W GaN WIDEBAND PULSED
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*