- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄8564 > AD7537LPZ (Analog Devices Inc)IC DAC 12BIT DUAL MULT 28PLCC PDF資料下載
參數(shù)資料
| 型號： | AD7537LPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 12BIT DUAL MULT 28PLCC |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 設(shè)置時間： | 250µs |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 24mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-LCC（J 形引線） |
| 供應(yīng)商設(shè)備封裝： | 28-PLCC（11.51x11.51） |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 2 電流，單極；2 電流，雙極 |
| 采樣率（每秒）： | 667k |
AD7537
REV.
–6–
SEPARATE AGND PINS
The DACs in the AD7537 have separate AGND lines taken to
pins AGNDA and AGNDB on the package. This increases the
applications versatility of the part. Figure 6 is an example of
this. DAC A is connected in standard fashion as a program-
mable attenuator. AGNDA is at ground potential. DAC B is op-
erating with AGND B biased to +5 V by the AD584. This gives
an output range of +5 V to +10 V.
Figure 6. AD7537 DACs Used in Different Modes
PROGRAMMABLE OSCILLATOR
Figure 7 shows a conventional state variable oscillator in which
the AD7537 controls the programmable integrators. The fre-
quency of oscillation is given by:
f
=
1
2
π
R
6
R
5
×
1
C
1
×C2× REQ1× REQ2
where REQ1 and REQ2 are the equivalent resistances of the
DACs. The same digital code is loaded into both DACs.
If C1 = C2 and R5 = R6, the expression reduces to
f
=
1
2
π
×
1
C
1
REQ1 × REQ2
Since R
EQ
=
2n
× R
LAD
N
, (RLAD = DAC ladder resistance).
f
=
1
2
π
×
1
C
(N /2n )2
RLAD1 × RLAD2
=
1
2
π
×
D
C
1
RLAD1 × RLAD2
D
=
N
2n
=
1
2
π
×
D
C
× R
LAD m
where m is the DAC ladder resistance mismatch ratio, typically
1.005.
With the values shown in Figure 7, the output frequency varies
from 0 Hz to 1.38 kHz. The amplitude of the output signal at
the A3 output is 10 V peak-to-peak and is constant over the
entire frequency span.
Figure 7. Programmable State Variable Oscillator
A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VI-2ND-IV | CONVERTER MOD DC/DC 85V 150W |
| VI-261-IV | CONVERTER MOD DC/DC 12V 150W |
| VI-B3R-MU-S | CONVERTER MOD DC/DC 7.5V 200W |
| VI-BW0-MX-S | CONVERTER MOD DC/DC 5V 75W |
| VI-2NB-IV | CONVERTER MOD DC/DC 95V 150W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7537LPZ-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS 84) Loading Dual 12-Bit DAC |
| AD7537SE | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS (8+4) Loading Dual 12-Bit DAC |
| AD7537SE/883B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:12-Bit Digital-to-Analog Converter |
| AD7537SQ | 制造商:Analog Devices 功能描述: |
| AD7537SQ/883B | 制造商:Analog Devices 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。