- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362106 > AD783JR (ANALOG DEVICES INC) Complete Very High Speed Sample-and-Hold Amplifier PDF資料下載
參數(shù)資料
| 型號： | AD783JR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Complete Very High Speed Sample-and-Hold Amplifier |
| 中文描述： | SAMPLE AND HOLD AMPLIFIER, 0.25 us ACQUISITION TIME, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 131K |
| 代理商： | AD783JR |
AD783
REV. A
–6–
DY NAMIC PE RFORMANCE
T he AD783 is compatible with 12-bit A-to-D converters in
terms of both accuracy and speed. T he fast acquisition time, fast
hold settling time and good output drive capability allow the
AD783 to be used with high speed, high resolution A-to-D
converters like the AD671 and AD7586. T he AD783’s fast
acquisition time provides high throughput rates for multichannel
data acquisition systems. T ypically, the AD783 can acquire a
5 V step in less than 250 ns. Figure 1 shows the settling
accuracy as a function of acquisition time.
0.08
0.06
0.04
0.02
0
0
250
500
ACQUISITION TIME – ns
V
O
Figure 1. V
OUT
Settling vs. Acquisition Time
T he hold settling determines the required time, after the hold
command is given, for the output to settle to its final specified
accuracy. T he typical settling behavior of the AD783 is 150 ns.
T he settling time of the AD783 is sufficiently fast to allow the
SHA, in most cases, to directly drive an A-to-D converter
without the need for an added “start convert” delay.
HOLD MODE OFFSE T
T he dc accuracy of the AD783 is determined primarily by the
hold mode offset. T he hold mode offset refers to the difference
between the final held output voltage and the input signal at the
time the hold command is given. T he hold mode offset arises
from a voltage error introduced onto the hold capacitor by
charge injection of the internal switches. T he nominal hold
mode offset is specified for a 0 V input condition. Over the in-
put range of –2.5 V to +2.5 V, the AD783 is also characterized
for an effective gain error and nonlinearity of the held value, as
shown in Figure 2. As indicated by the AD783 specifications,
the hold mode offset is very stable over temperature.
NONLINEARITY
GAIN ERROR
V , VOLTS
–2.5
+2.5
+1
HOLD MODE OFFSET
–1
(V
OUT
HOLD – V
IN
), mV
Figure 2. Hold Mode Offset, Gain Error and Nonlinearity
For applications where it is important to obtain zero offset, the
hold mode offset may be nulled externally at the input to the
A-to-D converter. Adjustment of the offset may be accom-
plished through the A-to-D itself or by an external amplifier
with offset nulling capability (e.g., AD711). T he offset will
change less than 0.5 mV over the specified temperature range.
SUPPLY DE COUPLING AND GROUNDING
C ONSIDE RAT IONS
As with any high speed, high resolution data acquisition system,
the power supplies should be well regulated and free from
excessive high frequency noise (ripple). T he supply connection
to the AD783 should also be capable of delivering transient
currents to the device. T o achieve the specified accuracy and
dynamic performance, decoupling capacitors must be placed
directly at both the positive and negative supply pins to com-
mon. Ceramic type 0.1
μ
F capacitors should be connected from
V
CC
and V
EE
to common.
ANALOG
P.S.
DIGITAL
P.S.
+5V
C
–5V
C
+5V
0.1
μ
F
0.1
μ
F
1
μ
F
1
μ
F
1
μ
F
AD783
DIGITAL
DATA
OUTPUT
SIGNAL GROUND
INPUT
ANALOG-TO-DIGITAL
CONVERTER
Figure 3. Basic Grounding and Decoupling Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD783AQ | Complete Very High Speed Sample-and-Hold Amplifier |
| AD783AR | Complete Very High Speed Sample-and-Hold Amplifier |
| AD7848AQ | 12-Bit Digital-to-Analog Converter |
| AD7848BQ | 12-Bit Digital-to-Analog Converter |
| AD7848JN | Micropower 8-Bit Current Output D/A Converter; Package: SO; No of Pins: 8; Temperature Range: 0°C to +70°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD783JRZ | 功能描述:IC AMP SAMPLE HOLD LP 5MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD783SQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Sample/Track-and-Hold Amplifier |
| AD783SQ/883B | 制造商:Rochester Electronics LLC 功能描述:IC, 12-BIT 250 NS S/H AMP - Bulk |
| AD7840 | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Complete 14-Bit DAC |
| AD7840AQ | 制造商:Analog Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。