Datasheet

ManualsBrandsANALOG DEVICES ManualsLinear ICsLinear IC - Op-amp Current feedback LFCSP 16 VQ (4x4)

Low Cost, Dual, High Current Output

Line Driver with Shutdown

ADA4310-1

Rev. 0

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FEATURES

High speed

−3 dB bandwidth: 190 MHz, G = +5

Slew rate: 820 V/μs, R

LOAD

= 50 Ω

Wide output swing

20.4 V p-p differential, R

LOAD

of 100 Ω from 12 V supply

High output current

Low distortion

−95 dBc typical at 1 MHz, V

OUT

= 2 V p-p, G = +5, R

LOAD

= 50 Ω

−69 dBc typical at 10 MHz, V

OUT

= 2 V p-p, G = +5, R

LOAD

= 50 Ω

Power management and shutdown

Control inputs CMOS level compatible

Shutdown quiescent current 0.65 mA/amplifier

Adjustable low quiescent current: 3.9 mA to 7.6 mA per amp

APPLICATIONS

Home networking line drivers

Twisted pair line drivers

Power line communications

Video line drivers

ARB line drivers

I/Q channel amplifiers

PIN CONFIGURATIONS

NC = NO CONNECT

OUT A

–IN A 4

+IN A 5

OUT B10

–IN B

+IN B

PD17

PD06

06027-001

Figure 1. Thermally Enhanced, 10-Lead MINI_SO_EP

NC = NO CONNECT

1NC

2−IN A

3+IN A

4GND

11 −IN B

12 NC

10 +IN B

9PD1

–V

PD0

OUT

06027-002

Figure 2. Thermally Enhanced, 4 mm × 4 mm 16-Lead LFCSP_VQ

GENERAL DESCRIPTION

The ADA4310-1 is comprised of two high speed, current

feedback operational amplifiers. The high output current, high

bandwidth, and fast slew rate make it an excellent choice for

broadband applications requiring high linearity performance

while driving low impedance loads.

The ADA4310-1 incorporates a power management function

that provides shutdown capabilities and/or the ability to

optimize the amplifiers quiescent current. The CMOS-

compatible, power-down control pins (PD1 and PD0) enable

the ADA4310-1 to operate in four different modes: full power,

medium power, low power, and complete power down. In the

power-down mode, quiescent current drops to only

0.65 mA/amplifier, while the amplifier output goes to a high

impedance state.

The ADA4310-1 is available in a thermally enhanced, 10-lead

MSOP with an exposed paddle for improved thermal conduction

and in a thermally enhanced, 4 mm × 4 mm 16-lead LFCSP.

The ADA4310-1 is rated to work in the extended industrial

temperature range of −40°C to +85°C.

06027-003

MID

ADA4310-1

1/2

MID

–

Figure 3. Typical PLC Driver Application

Summary of content (16 pages)

PAGE 1
Low Cost, Dual, High Current Output Line Driver with Shutdown ADA4310-1 PIN CONFIGURATIONS 10 OUT B NC 2 9 –IN B OUT A 3 8 +IN B –IN A 4 7 PD1 +IN A 5 6 PD0 NC = NO CONNECT 13 OUT B 14 +VS 16 OUT A 15 NC Figure 1.
PAGE 2
ADA4310-1 TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation ...................................................................... 10 Applications....................................................................................... 1 Application Information................................................................ 11 Pin Configurations ....................................................................
PAGE 3
ADA4310-1 SPECIFICATIONS VS = 12 V, ±6 V (@ TA = 25°C, G = +5, RL = 100 Ω, unless otherwise noted). Table 1.
PAGE 4
ADA4310-1 Parameter POWER DOWN PINS PD1, PD0 Threshold PD1, PD0 = 0 Pin Bias Current PD1, PD0 = 1 Pin Bias Current Enable/Disable Time Power Supply Rejection Ratio Test Conditions/Comments Min Typ Referenced to GND PD1 or PD0 = 0 V PD1 or PD0 = 3 V 1.5 −0.2 70 Positive/Negative −70/−60 Max 0.04/2 Rev.
PAGE 5
ADA4310-1 ABSOLUTE MAXIMUM RATINGS Table 2. Maximum Power Dissipation Parameter Supply Voltage 10-Lead MINI_SO_EP 16-Lead LFCSP_VQ Power Dissipation Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering 10 sec) Junction Temperature Rating 12 V ±6V (TJMAX − TA)/θJA −65°C to +125°C −40°C to +85°C 300°C 150°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
PAGE 6
ADA4310-1 –IN A 4 7 PD1 +IN A 5 6 PD0 NC = NO CONNECT +IN A 3 10 +IN B GND 4 9 PD1 NC = NO CONNECT Figure 5. 10-Lead MSOP Pin Configuration 06027-002 +IN B –VS 7 –IN B 8 11 −IN B PD0 8 9 14 +VS 13 OUT B 16 OUT A NC 2 OUT A 3 12 NC NC 1 −IN A 2 NC 5 OUT B NC 6 10 06027-001 +VS 1 15 NC PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 6. 16-Lead LFCSP Pin Configuration Table 4. 10-Lead MSOP Pin Function Description Table 5. 16-Lead LFCSP Pin Function Description Pin No.
PAGE 7
ADA4310-1 TYPICAL PERFORMANCE CHARACTERISTICS –20 VOUT = 100mV p-p RL = 50Ω PD1, PD0 = 0, 0 9 –30 G = +2 HARMONIC DISTORTION (dBc) NORMALIZED GAIN (dB) 6 3 G = +5 0 –3 G = +10 –6 G = +20 –9 –12 –40 –50 –60 –70 1000 06027-022 –110 100 100 Figure 10. Harmonic Distortion vs. Frequency PD1, PD0 = 0, 0 VOLTAGE NOISE (nV/√Hz) 17 14 11 GAIN (dB) 10 100 VOUT = 100mV p-p G = +5 RL = 50Ω 20 1 FREQUENCY (MHz) Figure 7.
PAGE 8
ADA4310-1 –40 PD1, PD0 = (0, 0) RL = 100Ω PD1, PD0 = (1,1) –10 –60 FEEDTHROUGH (dB) –20 –30 –40 –50 –80 –100 0.1 1 10 100 1000 FREQUENCY (MHz) –120 1 10 PD1, PD0 = (1,1) 100 –20 –30 OUTPUT IMPEDANCE (kΩ) +PSR –40 –PSR –50 –60 10 1 0.1 0.01 0.1 1 10 100 1000 FREQUENCY (MHz) 0.001 0.01 06027-006 –80 0.01 1 10 100 FREQUENCY (MHz) Figure 17. Output Impedance vs. Frequency (Disabled) Figure 14. Power Supply Rejection(PSR) vs. Frequency 100 0.1 2.5 PD1, PD0 = (0, 0) 2.
PAGE 9
ADA4310-1 0 –40 –60 –80 –100 –120 0.1 1 10 FREQUENCY (MHz) 100 1000 06027-014 CROSSTALK (dB) –20 Figure 19. Crosstalk Rev.
PAGE 10
ADA4310-1 THEORY OF OPERATION The ADA4310-1 is a current feedback amplifier with high output current capability. With a current feedback amplifier, the current into the inverting input is the feedback signal, and the open-loop behavior is that of a transimpedance, dVO/dIIN or TZ. The open-loop transimpedance is analogous to the open-loop voltage gain of a voltage feedback amplifier. Figure 20 shows a simplified model of a current feedback amplifier.
PAGE 11
ADA4310-1 APPLICATION INFORMATION 1 RF (Ω) 499 499 1k 499 499 RG (Ω) 499 124 249 55.4 26.1 −3 dB SS BW (MHz) 230 190 125 160 115 Applications (that is, powerline AV modems) requiring greater than 10 dBm peak power should consider using an external line driver, such as the ADA4310-1. Figure 21 shows an example interface between the TxDAC® output and ADA4310-1 biased for single-supply operation.
PAGE 12
ADA4310-1 BOARD LAYOUT POWER SUPPLY BYPASSING As is the case with all high speed applications, careful attention to printed circuit board layout details prevents associated board parasitics from becoming problematic. Proper RF design technique is mandatory. The PCB should have a ground plane covering all unused portions of the component side of the board to provide a low impedance return path.
PAGE 13
ADA4310-1 OUTLINE DIMENSIONS 3.00 BSC EXPOSED PAD 6 10 TOP VIEW 3.00 BSC 1 4.90 BSC 2.50 SQ 0.75 5 PIN 1 BOTTOM VIEW 0.50 BSC 0.95 0.85 0.75 1.10 MAX 0.15 0.00 0.33 0.17 SEATING PLANE 0.80 0.60 0.40 8° 0° 0.23 0.08 COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-187-BA-T Figure 22. 10-Lead Mini Small Outline Package with Exposed Pad [MINI_SO_EP] (RH-10) Dimensions shown in millimeters 4.00 BSC SQ 0.60 MAX 0.60 MAX PIN 1 INDICATOR 0.65 BSC TOP VIEW 12° MAX 0.75 0.60 0.
PAGE 14
ADA4310-1 NOTES Rev.
PAGE 15
ADA4310-1 NOTES Rev.