参数资料
| 型号： | AD8512ARMZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/20页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP JFET 8MHZ DUAL LN 8MSOP |
| 设计资源： | Precision, Bipolar Configuration for the AD5546/56 DAC (CN0024) Precision, Bipolar, Configuration for AD5547/AD5557 DAC (CN0028) |
| 标准包装： | 50 |
| 放大器类型： | J-FET |
| 电路数： | 2 |
| 转换速率： | 20 V/µs |
| 增益带宽积： | 8MHz |
| 电流 - 输入偏压： | 25pA |
| 电压 - 输入偏移： | 100µV |
| 电流 - 电源： | 2.2mA |
| 电流 - 输出 / 通道： | 70mA |
| 电压 - 电源，单路/双路(±)： | ±4.5 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
| AD8512AR-REEL | 功能描述:IC OPAMP JFET 8MHZ DUAL LN 8SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:0.11 V/µs 增益带宽积:350kHz -3db带宽:- 电流 - 输入偏压:4nA 电压 - 输入偏移:20µV 电流 - 电源:260µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SO 包装:带卷 (TR) |
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