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參數(shù)資料
| 型號： | AD8512ARMZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP JFET 8MHZ DUAL LN 8MSOP |
| 設計資源： | Precision, Bipolar Configuration for the AD5546/56 DAC (CN0024) Precision, Bipolar, Configuration for AD5547/AD5557 DAC (CN0028) |
| 標準包裝： | 50 |
| 放大器類型： | J-FET |
| 電路數(shù)： | 2 |
| 轉(zhuǎn)換速率： | 20 V/µs |
| 增益帶寬積： | 8MHz |
| 電流 - 輸入偏壓： | 25pA |
| 電壓 - 輸入偏移： | 100µV |
| 電流 - 電源： | 2.2mA |
| 電流 - 輸出 / 通道： | 70mA |
| 電壓 - 電源，單路/雙路(±)： | ±4.5 V ~ 18 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-MSOP |
| 包裝： | 管件 |
AD8510/AD8512/AD8513
Rev. I | Page 18 of 20
TIME (2ms/DIV)
VOL
TA
G
E
(
5V/
D
IV)
02
72
9-
0
50
The AD8510 single has two additional active terminals that are
not present on the AD8512 dual or AD8513 quad parts. These
pins are labeled “null” and are used for fine adjustment of the
input offset voltage. Although the guaranteed maximum offset
voltage at room temperature is 400 μV and over the 40°C to
+125°C range is 800 mV maximum, this offset voltage can be
reduced by adding a potentiometer to the null pins as shown in
Figure 58. With the 20 kΩ potentiometer shown, the adjustment
range is approximately ±3.5 mV. The potentiometer parallels
low value resistors in the drain circuit of the JFET differential
input pair and allows unbalancing of the drain currents to
change the offset voltage. If offset adjustment is not required,
these pins should be left unconnected.
Caution should be used when adding adjusting potentiometers to
any op amp with this capability for several reasons. First, there is
gain from these nodes to the output; therefore, capacitive coupling
from noisy traces to these nodes will inject noise into the signal
path. Second, the temperature coefficient of the potentiometer
will not match the temperature coefficient of the internal resistors,
so the offset voltage drift with temperature will be slightly affected.
Third, this provision is for adjusting the offset voltage of the
op amp, not for adjusting the offset of the overall system. Although
it is tempting to decrease the value of the potentiometer to attain
more range, this will adversely affect the dc and ac parameters.
Instead, increase the potentiometer to 50 kΩ to decrease the
range if needed.
Figure 55. Pulse-Width Modulation
Crosstalk
Crosstalk, also known as channel separation, is a measure of
signal feedthrough from one channel to another on the same
IC. The AD8512/AD8513 have a channel separation of better
than 90 dB for frequencies up to 10 kHz and of better than
50 dB for frequencies up to 10 MHz. Figure 57 shows the
typical channel separation behavior between Amplifier A
(driving amplifier) and each of the following: Amplifier B,
Amplifier C, and Amplifier D.
VOUT
1
2
7
6
5
4
3
8
+VS
20k
2.2k
5k
–VS
VIN
18V p-p
CROSSTALK = 20 log
VOUT
10VIN
02
72
9-
05
2
1
5
4
7
3
6
2
AD8510
INPUT
OUTPUT
V+
VOS TRIM RANGE IS
TYPICALLY ±3.5mV
20k
V–
–
+
0
27
29
-0
58
Figure 56. Crosstalk Test Circuit
02
72
9-
0
5
1
FREQUENCY (Hz)
CHANNE
L
S
E
P
A
R
A
T
ION
(
d
B
)
100
–160
10k
–140
–120
–80
1k
–60
–20
–40
100k
1M
10M
–100
0
CH D
CH C
CH B
Figure 58. Optional Offset Nulling Circuit
Figure 57. Channel Separation
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8512ARMZ | 制造商:Analog Devices 功能描述:IC OP-AMP 8MHz 20V/ MSOP-8 制造商:Analog Devices 功能描述:IC, OP-AMP, 8MHz, 20V/s, MSOP-8 |
| AD8512ARMZ-R2 | 制造商:Analog Devices 功能描述:OP Amp Dual GP 制造商:Analog Devices 功能描述:IC OP AMP PREC JFET DUAL 8MSOP |
| AD8512ARMZ-R2 | 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC |
| AD8512ARMZ-REEL | 功能描述:IC OPAMP JFET 8MHZ DUAL LN 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓模塊:Differential Circuit Design Techniques for Communication Applications 標準包裝:1 系列:- 放大器類型:RF/IF 差分 電路數(shù):1 輸出類型:差分 轉(zhuǎn)換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤，CSP 供應商設備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT |
| AD8512AR-REEL | 功能描述:IC OPAMP JFET 8MHZ DUAL LN 8SOIC RoHS:否 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):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SO 包裝:帶卷 (TR) |
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