- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373894 > AD7228ATQ3 (Analog Devices, Inc.) LC2MOS Octal 8-Bit DAC PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7228ATQ3 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | LC2MOS Octal 8-Bit DAC |
| 中文描述： | LC2MOS八進(jìn)制8位DAC |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 207K |
| 代理商： | AD7228ATQ3 |
AD7228A
REV. A
–5–
OP AMP SE CT ION
Each voltage-mode D/A converter output is buffered by a unity
gain noninverting CMOS amplifier. T his buffer amplifier is
tested with a 2 k
and 100 pF load but will typically drive a
2 k
and 500 pF load.
T he AD7228A can be operated single or dual supply. Operating
the part from single or dual supplies has no effect on the positive-
going settling time. However, the negative-going settling time to
voltages near 0 V in single supply will be slightly longer than the
settling time for dual supply operation. Additionally, to ensure
that the output voltage can go to 0 V in single supply, a transis-
tor on the output acts as a passive pull-down as the output volt-
age nears 0 V. As a result, the sink capability of the amplifier is
reduced as the output voltage nears 0 V in single supply. In dual
supply operation, the full sink capability of 400
μ
A at 25
°
C is
maintained over the entire output voltage range. T he single sup-
ply output sink capability is shown in Figure 4. T he negative
V
SS
also gives improved output amplifier performance allowing
an extended input reference voltage range and giving improved
slew rate at the output.
Figure 4. Single Supply Sink Current
T he output broadband noise from the amplifier is 300
μ
V
peak-to-peak. Figure 5 shows a plot of noise spectral density
versus frequency.
Figure 5. Noise Spectral Density vs. Frequency
DIGIT AL INPUT S
T he AD7228A digital inputs are compatible with either T T L or
5 V CMOS levels. All logic inputs are static-protected MOS
gates with typical input currents of less than 1 nA. Internal in-
put protection is achieved by on-chip distributed diodes.
SUPPLY CURRE NT
T he AD7228A has a maximum I
DD
specification of 22 mA and
a maximum I
SS
of 20 mA over the –55
°
C to +125
°
C tempera-
ture range. T his maximum current specification is actually de-
termined by the current at –55
°
C. Figure 6 shows a typical plot
of power supply current versus temperature.
Figure 6. Power Supply Current vs. Temperature
APPLY ING T HIS AD7228A
UNIPOLAR OUT PUT OPE RAT ION
T his is the basic mode of operation for each channel of the
AD7228A, with the output voltage having the same positive po-
larity as V
REF
. Connections for unipolar output operation are
shown in Figure 7. T he AD7228A can be operated from single
or dual supplies as outlined earlier. T he voltage at the reference
input must never be negative with respect to GND. Failure to
observe this precaution may cause parasitic transistor action and
possible device destruction. T he code table for unipolar output
operation is shown in T able II.
Figure 7. Unipolar Output Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD722 | RGB to NTSC/PAL Encoder(RGB與NTSC/PAL制式轉(zhuǎn)換編碼器) |
| AD7233BN | LC2MOS 12-Bit Serial Mini-DIP DACPORT |
| AD7233AN | ; Series:M; Thermistor Type:NTC; Resistance:100kohm; Package/Case:Radial; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No; R/T Curve:4 RoHS Compliant: No |
| AD7237 | OPTOISOLATOR, 100% CTR TRANSISTOR OUTPUT |
| AD7247JN | LC2MOS DUAL 12-BIT DACPORT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7228AUQ | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Octal 8-Bit DAC |
| AD7228AUQ/883B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7228AUQ3 | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Octal 8-Bit DAC |
| AD7228BCHIPS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7228BQ | 功能描述:IC DAC 8BIT OCTAL W/AMP 24-CDIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 設(shè)置時(shí)間:1µs 位數(shù):8 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:8 電壓電源:雙 ± 功率耗散（最大）:941mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC W 包裝:帶卷 (TR) 輸出數(shù)目和類型:8 電壓，單極 采樣率（每秒）:* |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。