参数资料
| 型号： | ISL55211IRTZ-T7A |
| 厂商： | Intersil |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP DIFF LOW NOISE 16TQFN |
| 产品培训模块： | Solutions for Test and Measurement Equipment |
| 标准包装： | 1 |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 输出类型： | 差分 |
| 转换速率： | 5600 V/µs |
| -3db带宽： | 1.6GHz |
| 电流 - 输入偏压： | 50µA |
| 电压 - 输入偏移： | 100µV |
| 电流 - 电源： | 35mA |
| 电流 - 输出 / 通道： | 45mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 4.2 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN（3x3） |
| 包装： | 标准包装 |
| 其它名称： | ISL55211IRTZ-T7ADKR |
1
Wideband, Low Noise, Low Distortion, Fixed Gain,
Differential Amplifier
ISL55211
The ISL55211 is a wideband, differential input to differential
output amplifier offering 3 possible internal gain settings.
Using fixed 500 internal feedback resistors, the amplifier
may be configured for a differential gain of 2, 4 or 5V/V
depending on which combination of input pins are connected
to the signal source. Internal feedback capacitors controls the
signal bandwidth to be a constant 1.4GHz in all gain settings.
Ideally suited for AC-coupled data acquisition applications, the
output DC common mode voltage is controlled through an
external VCM pin or left to default to 1.2V above the negative
supply pin. Where the differential signal source is AC-coupled,
the input common mode voltage will equal the output
common mode voltage.
Intended for very high dynamic range ADC interface
applications, the ISL55211 offers 5600V/s differential slew
rate, <12nV/√Hz output noise, and >100dBc SFDR to
>100MHz for 2VP-P 2-tone 3rd order intermodulation. Its
balanced architecture effectively suppresses even order
distortion terms - an important issue for very wide band 1st
Nyquist zone ADC interface applications. Minimum gain
operation of 2V/V (6dB) with <1dB peaking ensures stable
performance over-temperature. It's ultra high differential slew
rate of 5600V/s provides adequate performance margin for
large signal application through 500MHz.
The ISL55211 requires only a single 3.3V (max. 4.2V) power
supply and 35mA quiescent current, providing a very low
power solution (115mW). Further power savings are possible
using the optional power shutdown control - where the
quiescent current can be reduced to <0.4mA. A companion
device, the ISL55210, offers similar performance where the
feedback and gain resistors are external. Both are available in
a 16 Ld TQFN (Pb-free) package and are specified for
operation over the -40°C to +85°C ambient temperature
range.
Features
3 Fixed Gain Options . . . . . . . . . . . . . . . . . . . . . . . 2, 4, or 5V/V
Constant Bandwidth Over Gain . . . . . . . . . . . . . . . . . . 1.4GHz
Differential Slew Rate . . . . . . . . . . . . . . . . . . . . . . . 5,600V/s
2VP-P, 2-tone IM3 (200) 100MHz . . . . . . . . . . . . . . -103dBc
Low Differential Output Noise (Gain 5V/V) . . . . . . <12nV/√Hz
Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . 3.0V to 4.2V
Quiescent Power (3.3V Supply) . . . . . . . . . . . . . . . . . .115mW
Applications
Low Power, High Dynamic Range ADC Interface
Differential Mixer Output Amplifier
SAW Filter Pre/Post Driver
Fixed Gain Coax Receiver
Related Devices
ISL55210 - External Gain Set Version
ISLA112P50 - 12-bit, 500MSPS ADC (<500mW)
ISLA214P50 - 14-bit, 500MSPS ADC (<850mW)
Related Literature
AN1649 - “Designer’s guide to the ISL55210 and ISL55211
Evaluation Boards”
-13
-10
-7
-4
-1
2
5
8
11
14
17
20
23
1M
10M
100M
1G
50
1:2
ISL55211
+3.3V
+
-
VCM
22pF
10
300
8pF
ISLA214P50
1:1.4
50
VCM
ADT4-1T
ADT2-1T
Vi
G=5V/V
120nH
VADC
HIGHGAIN, VERYLOWPOWER, ADCINTERFACEWITH3RD ORDEROUTPUTFILTER
20log
VADC
Vi
=20dB
35mA
(115mW)
14Bit 500MSPS
180mVP-P
For ADC-1dBFS
1.2V
(850mW)
10
50
FIGURE 1. TYPICAL APPLICATION CIRCUIT
FREQUENCY (Hz)
GAI
N
(
d
B)
MEASURED FREQUENCY RESPONSE
June 21, 2011
FN7868.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) and FemtoCharge are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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