ISL55211IRTZ Intersil Corporation, ISL55211IRTZ Datasheet

ISL55211IRTZ

Manufacturer Part Number

ISL55211IRTZ

Description

Manufacturer

Intersil Corporation

Datasheets

1.ISL55211.pdf (20 pages)

2.ISL55211IRTZ.pdf (20 pages)

Specifications of ISL55211IRTZ

Pack_quantity

100

Comm_code

85423990

Lead_time

555

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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 500Ω 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 V

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/µs differential slew

rate, <12nV/√Hz output noise, and >100dBc SFDR to

>100MHz for 2V

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/µs 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.

June 21, 2011

FN7868.0

180mV

For ADC -1dBFS

HIGH GAIN, VERY LOW POWER, ADC INTERFACE WITH 3

P-P

ADT4-1T

1:2

pin or left to default to 1.2V above the negative

P-P

2-tone 3rd order intermodulation. Its

1.2V

+3.3V

ISL55211

G = 5V/V

(115mW)

35mA

20 log

22pF

ADC

= 20dB

ADT2-1T

1:1.4

FIGURE 1. TYPICAL APPLICATION CIRCUIT

Intersil (and design) and FemtoCharge are trademarks owned by Intersil Corporation or one of its subsidiaries.

120nH

ORDER OUTPUT FILTER

ADC

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

14Bit 500MSPS

1-888-INTERSIL or 1-888-468-3774

300

ISLA214P50

(850mW)

8pF

Features

• 3 Fixed Gain Options . . . . . . . . . . . . . . . . . . . . . . . 2, 4, or 5V/V

• Constant Bandwidth Over Gain . . . . . . . . . . . . . . . . . . 1.4GHz

• Differential Slew Rate . . . . . . . . . . . . . . . . . . . . . . . 5,600V/µs

• 2V

• 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

•

Related Literature

•

ISL55210

ISLA112P50

ISLA214P50

AN1649

Evaluation Boards”

All other trademarks mentioned are the property of their respective owners.

P-P

-10

-13

, 2-tone IM3 (200Ω) 100MHz . . . . . . . . . . . . . . -103dBc

-1

-4

-7

- “Designer’s guide to the ISL55210 and ISL55211

- External Gain Set Version

- 14-bit, 500MSPS ADC (<850mW)

- 12-bit, 500MSPS ADC (<500mW)

MEASURED FREQUENCY RESPONSE

10M

FREQUENCY (Hz)

100M

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