ADA4927-2YCPZ-R7

ADA4927-2YCPZ-R7 Datasheet

ADA4927-1/ADA4927-2

Part	Datasheet
ADA4927-2YCPZ-R7	ADA4927-2YCPZ-R7 (pdf)

Related Parts	Information
ADA4927-2YCP-EBZ	ADA4927-2YCP-EBZ
ADA4927-1YCPZ-R2	ADA4927-1YCPZ-R2
ADA4927-1YCPZ-RL	ADA4927-1YCPZ-RL
ADA4927-2YCPZ-R2	ADA4927-2YCPZ-R2
ADA4927-1YCPZ-R7	ADA4927-1YCPZ-R7
ADA4927-2YCPZ-RL	ADA4927-2YCPZ-RL

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Data Sheet Ultralow Distortion Current Feedback Differential ADC Driver ADA4927-1/ADA4927-2 Extremely low harmonic distortion −105 dBc HD2 at 10 MHz −91 dBc HD2 at 70 MHz −87 dBc HD2 at 100 MHz −103 dBc HD3 at 10 MHz −98 dBc HD3 at 70 MHz −89 dBc HD3 at 100 MHz Better distortion at higher gains than VF amplifiers Low input voltage noise High speed −3 dB bandwidth of GHz dB gain flatness 150 MHz Slew rate 5000 V/µs, 25% to 75% Fast settling time 10 ns Low input offset voltage mV typical Externally adjustable gain Stability and bandwidth controlled by feedback resistor Differential-to-differential or single-ended-to-differential operation Adjustable output common-mode voltage Wide supply operation +5 V to ±5 V ADC drivers Single-ended-to-differential converters IF and baseband gain blocks Differential buffers Differential line drivers The ADA4927 is a low noise, ultralow distortion, high speed, current feedback differential amplifier that is an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The output common-mode level can easily be matched to the required ADC input common-mode levels. The internal common-mode feedback loop provides exceptional output balance and suppression of even-order distortion products. Differential gain configurations are easily realized using an external feedback network comprising four resistors. The current feedback architecture provides loop gain that is nearly independent of closed-loop gain, achieving wide bandwidth, low distortion, and low noise at higher gains and lower power consumption than comparable voltage feedback amplifiers. The ADA4927 is fabricated using the Analog Devices, Inc., silicon-germanium complementary bipolar process, enabling very low levels of distortion with an input voltage noise of only Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. FUNCTIONAL BLOCK DIAGRAMS ADA4927-1 16 15 14 13 07574-001 1 +IN 2 3 +FB 4 12 PD 11 10 +OUT 9 VOCM +VS 5 +VS 6 +VS 7 +VS 8 Figure 24 +IN1 23 22 21 20 PD1 19 1 +FB1 2 +VS1 3 +VS1 4 5 +IN2 6 ADA4927-2 18 +OUT1 17 VOCM1 16 15 14 PD2 7 +FB2 8 +VS2 9 +VS2 10 VOCM2 11 +OUT2 12 07574-002 VOUT, dm = 2V p-p Figure SPURIOUS-FREE DYNAMIC RANGE dBc G=1 G = 10 G = 20 07574-026 FREQUENCY MHz Figure Spurious-Free Dynamic Range vs. Frequency at Various Gains The low dc offset and excellent dynamic performance of the ADA4927 make it well suited for a wide variety of data acquisition and signal processing applications. The ADA4927-1 is available in a Pb-free, 3 mm x 3 mm 16-lead LFCSP, and the ADA4927-2 is available in a Pb-free, 4 mm x 4 mm 24-lead LFCSP. The pinouts are optimized to facilitate printed circuit board PCB layout and to minimize distortion. They are specified to operate over the −40°C to +105°C temperature range. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel Analog Devices, Inc. All rights reserved. Technical Support 0 Initial Version Data Sheet Definition of 17 Applications Information 18 Analyzing an Application Circuit 18 Setting the Closed-Loop Gain 18 Estimating the Output Noise Voltage 18 Impact of Mismatches in the Feedback Networks 19 Calculating the Input Impedance for an Application Circuit 19 Input Common-Mode Voltage Range 21 Input and Output Capacitive AC Coupling............................ 21 Setting the Output Common-Mode Voltage 21 Power-Down 22 Layout, Grounding, and 23 High Performance ADC Driving 24 Outline Dimensions 25 Ordering Guide 25 Data Sheet ADA4927-1/ADA4927-2 SPECIFICATIONS ±5 V OPERATION TA = 25°C, +VS = 5 V, −VS = − 5 V, VOCM = 0 V, RF = 301 Ω, RG = 301 Ω, RT = Ω when used , RL, dm = 1 unless otherwise noted. All specifications refer to single-ended input and differential outputs, unless otherwise noted. Refer to Figure 46 for signal definitions. ±DIN to VOUT, dm Performance Table Parameter DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth −3 dB Large Signal Bandwidth for dB Flatness Slew Rate Settling Time to Overdrive Recovery Time NOISE/HARMONIC PERFORMANCE Second Harmonic Third Harmonic Voltage Noise RTI Input Current Noise Crosstalk INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Resistance Input Capacitance Input Common-Mode Voltage Range Common-Mode Rejection Ratio CMRR Open-Loop Transresistance OUTPUT CHARACTERISTICS Output Voltage Swing Linear Output Current Output Balance Error Test Conditions/Comments VOUT, dm = V p-p VOUT, dm = V p-p VOUT, dm = V p-p, ADA4927-1 VOUT, dm = V p-p, ADA4927-2 VOUT, dm = 2 V step, 25% to 75% VOUT, dm = 2 V step VIN = 0 V to V step, G = 10 See Figure 45 for distortion test circuit VOUT, dm = 2 V p-p, 10 MHz VOUT, dm = 2 V p-p, 70 MHz VOUT, dm = 2 V p-p, 100 MHz VOUT, dm = 2 V p-p, 10 MHz VOUT, dm = 2 V p-p, 70 MHz VOUT, dm = 2 V p-p, 100 MHz f1 = 70 MHz, f2 = MHz, VOUT, dm = 2 V p-p f1 = 140 MHz, f2 = MHz, VOUT, dm = 2 V p-p f = 100 kHz, G = 28 f = 100 kHz, G = 28 f = 100 MHz, ADA4927-2 VIP = VIN = VOCM = 0 V tMIN to tMAX variation tMIN to tMAX variation Differential Common mode Differential cm, cm = ±1 V DC Each single-ended output, RF = RG = 10 dm, dm = 1 V, 10 MHz, see Figure 44 for test circuit Min Typ Max Unit 2300 1500 5000 V/µs −105 −91 −87 −103 −98 −89 −94 −85 14 −75 dBc dB −15 14 120 −70 −93 120 185 mV µV/°C µA µA/°C µA pF V dB mA p-p −65 ADA4927-1/ADA4927-2 VOCM to VOUT, cm Performance Table Parameter VOCM DYNAMIC PERFORMANCE Small Signal −3 dB Bandwidth Slew Rate Input Voltage Noise RTI VOCM INPUT CHARACTERISTICS Input Voltage Range Input Resistance Input Offset Voltage VOCM CMRR Gain General Performance Table Parameter POWER SUPPLY ORDERING GUIDE Model1 ADA4927-1YCPZ-R2 ADA4927-1YCPZ-RL ADA4927-1YCPZ-R7 ADA4927-2YCPZ-R2 ADA4927-2YCPZ-RL ADA4927-2YCPZ-R7 1 Z = RoHS Compliant Part. PIN 1 INDICATOR SEATING PLANE COMPLIANT TO JEDEC STANDARDS MO-220-WEED. Figure 16-Lead Frame Chip Scale Package [LFCSP] 3 mm x 3 mm Body and mm Package Height CP-16-21 Dimensions shown in millimeters 19 18 EXPOSED PAD PIN 1 INDICATOR TOP VIEW BOTTOM VIEW MAX NOM COPLANARITY FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET. COMPLIANT TO JEDEC STANDARDS MO-220-WGGD. Figure 24-Lead Frame Chip Scale Package [LFCSP] 4 mm x 4 mm Body and mm Package Height CP-24-7 Dimensions shown in millimeters 03-11-2013-A Temperature Range −40°C to +105°C −40°C to +105°C −40°C to +105°C −40°C to +105°C −40°C to +105°C −40°C to +105°C Package Description 16-Lead LFCSP_VQ 16-Lead LFCSP_VQ 16-Lead LFCSP_VQ 24-Lead LFCSP_VQ 24-Lead LFCSP_VQ 24-Lead LFCSP_VQ Package Option CP-16-21 CP-16-21 CP-16-21 CP-24-7 CP-24-7 CP-24-7 Ordering Quantity 250 5,000 1,500 250 5,000 1,500 Branding H1N Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07574-0-5/16 B

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Data Sheet

Ultralow Distortion Current Feedback Differential ADC Driver

ADA4927-1/ADA4927-2

Extremely low harmonic distortion −105 dBc HD2 at 10 MHz −91 dBc HD2 at 70 MHz −87 dBc HD2 at 100 MHz −103 dBc HD3 at 10 MHz −98 dBc HD3 at 70 MHz −89 dBc HD3 at 100 MHz

Better distortion at higher gains than VF amplifiers Low input voltage noise High speed
−3 dB bandwidth of GHz dB gain flatness 150 MHz Slew rate 5000 V/µs, 25% to 75% Fast settling time 10 ns Low input offset voltage mV typical Externally adjustable gain Stability and bandwidth controlled by feedback resistor Differential-to-differential or single-ended-to-differential operation Adjustable output common-mode voltage Wide supply operation +5 V to ±5 V

ADC drivers Single-ended-to-differential converters IF and baseband gain blocks Differential buffers Differential line drivers

The ADA4927 is a low noise, ultralow distortion, high speed, current feedback differential amplifier that is an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The output common-mode level can easily be matched to the required ADC input common-mode levels. The internal common-mode feedback loop provides exceptional output balance and suppression of even-order distortion products. Differential gain configurations are easily realized using an external feedback network comprising four resistors. The current feedback architecture provides loop gain that is nearly independent of closed-loop gain, achieving wide bandwidth, low distortion, and low noise at higher gains and lower power consumption than comparable voltage feedback amplifiers. The ADA4927 is fabricated using the Analog Devices, Inc., silicon-germanium complementary bipolar process, enabling very low levels of distortion with an input voltage noise of only

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

FUNCTIONAL BLOCK DIAGRAMS

ADA4927-1
16 15 14 13
07574-001
1 +IN 2 3 +FB 4
12 PD 11 10 +OUT 9 VOCM
+VS 5 +VS 6 +VS 7 +VS 8

Figure
24 +IN1 23 22 21 20 PD1 19
1 +FB1 2 +VS1 3 +VS1 4 5 +IN2 6

ADA4927-2
18 +OUT1
17 VOCM1 16 15 14 PD2
7 +FB2 8 +VS2 9 +VS2 10 VOCM2 11 +OUT2 12
07574-002

VOUT, dm = 2V p-p

Figure

SPURIOUS-FREE DYNAMIC RANGE dBc

G=1 G = 10 G = 20
07574-026

FREQUENCY MHz

Figure Spurious-Free Dynamic Range vs. Frequency at Various Gains

The low dc offset and excellent dynamic performance of the ADA4927 make it well suited for a wide variety of data acquisition and signal processing applications.

The ADA4927-1 is available in a Pb-free, 3 mm x 3 mm 16-lead LFCSP, and the ADA4927-2 is available in a Pb-free, 4 mm x 4 mm 24-lead LFCSP. The pinouts are optimized to facilitate printed circuit board PCB layout and to minimize distortion. They are specified to operate over the −40°C to +105°C temperature range.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel Analog Devices, Inc. All rights reserved.

Technical Support
0 Initial Version

Data Sheet

Definition of 17 Applications Information 18
Analyzing an Application Circuit 18 Setting the Closed-Loop Gain 18 Estimating the Output Noise Voltage 18 Impact of Mismatches in the Feedback Networks 19 Calculating the Input Impedance for an Application Circuit 19 Input Common-Mode Voltage Range 21 Input and Output Capacitive AC Coupling............................ 21 Setting the Output Common-Mode Voltage 21 Power-Down 22 Layout, Grounding, and 23 High Performance ADC Driving 24 Outline Dimensions 25 Ordering Guide 25

Data Sheet

ADA4927-1/ADA4927-2

SPECIFICATIONS
±5 V OPERATION

TA = 25°C, +VS = 5 V, −VS = − 5 V, VOCM = 0 V, RF = 301 Ω, RG = 301 Ω, RT = Ω when used , RL, dm = 1 unless otherwise noted. All specifications refer to single-ended input and differential outputs, unless otherwise noted. Refer to Figure 46 for signal definitions. ±DIN to VOUT, dm Performance

Table Parameter DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth −3 dB Large Signal Bandwidth for dB Flatness

Slew Rate Settling Time to Overdrive Recovery Time NOISE/HARMONIC PERFORMANCE Second Harmonic

Third Harmonic

Voltage Noise RTI Input Current Noise Crosstalk INPUT CHARACTERISTICS Offset Voltage

Input Bias Current

Input Offset Current Input Resistance

Input Capacitance Input Common-Mode Voltage Range Common-Mode Rejection Ratio CMRR Open-Loop Transresistance OUTPUT CHARACTERISTICS Output Voltage Swing Linear Output Current Output Balance Error

Test Conditions/Comments

VOUT, dm = V p-p VOUT, dm = V p-p VOUT, dm = V p-p, ADA4927-1 VOUT, dm = V p-p, ADA4927-2 VOUT, dm = 2 V step, 25% to 75% VOUT, dm = 2 V step VIN = 0 V to V step, G = 10 See Figure 45 for distortion test circuit VOUT, dm = 2 V p-p, 10 MHz VOUT, dm = 2 V p-p, 70 MHz VOUT, dm = 2 V p-p, 100 MHz VOUT, dm = 2 V p-p, 10 MHz VOUT, dm = 2 V p-p, 70 MHz VOUT, dm = 2 V p-p, 100 MHz f1 = 70 MHz, f2 = MHz, VOUT, dm = 2 V p-p f1 = 140 MHz, f2 = MHz, VOUT, dm = 2 V p-p f = 100 kHz, G = 28 f = 100 kHz, G = 28 f = 100 MHz, ADA4927-2

VIP = VIN = VOCM = 0 V tMIN to tMAX variation
tMIN to tMAX variation

Differential Common mode Differential
cm, cm = ±1 V DC

Each single-ended output, RF = RG = 10
dm, dm = 1 V, 10 MHz, see Figure 44 for test circuit

Min Typ Max Unit
2300
1500
5000

V/µs
−105 −91 −87 −103 −98 −89 −94 −85 14 −75
dBc dB
−15
14 120
−70 −93 120 185
mV µV/°C µA µA/°C µA pF V dB
mA p-p
−65

ADA4927-1/ADA4927-2

VOCM to VOUT, cm Performance

Table Parameter VOCM DYNAMIC PERFORMANCE

Small Signal −3 dB Bandwidth Slew Rate Input Voltage Noise RTI VOCM INPUT CHARACTERISTICS Input Voltage Range Input Resistance Input Offset Voltage VOCM CMRR Gain

General Performance

Table Parameter POWER SUPPLY
ORDERING GUIDE

Model1 ADA4927-1YCPZ-R2 ADA4927-1YCPZ-RL ADA4927-1YCPZ-R7 ADA4927-2YCPZ-R2 ADA4927-2YCPZ-RL ADA4927-2YCPZ-R7
1 Z = RoHS Compliant Part.

PIN 1 INDICATOR

SEATING PLANE

COMPLIANT TO JEDEC STANDARDS MO-220-WEED.

Figure 16-Lead Frame Chip Scale Package [LFCSP] 3 mm x 3 mm Body and mm Package Height CP-16-21 Dimensions shown in millimeters
19 18

EXPOSED PAD

PIN 1 INDICATOR

TOP VIEW

BOTTOM VIEW

MAX NOM

COPLANARITY

FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET.

COMPLIANT TO JEDEC STANDARDS MO-220-WGGD.

Figure 24-Lead Frame Chip Scale Package [LFCSP] 4 mm x 4 mm Body and mm Package Height CP-24-7 Dimensions shown in millimeters
03-11-2013-A

Temperature Range −40°C to +105°C −40°C to +105°C −40°C to +105°C −40°C to +105°C −40°C to +105°C −40°C to +105°C

Package Description 16-Lead LFCSP_VQ 16-Lead LFCSP_VQ 16-Lead LFCSP_VQ 24-Lead LFCSP_VQ 24-Lead LFCSP_VQ 24-Lead LFCSP_VQ

Package Option CP-16-21 CP-16-21 CP-16-21 CP-24-7 CP-24-7 CP-24-7
Ordering Quantity 250 5,000 1,500 250 5,000 1,500

Branding H1N

Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.

D07574-0-5/16 B

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Datasheet ID: ADA4927-2YCPZ-R7 517800