ADA4939-1YCPZ-R2

ADA4939-1YCPZ-R2 Datasheet

The ADA4939-1/ADA4939-2 are low noise, ultralow distortion, high speed differential amplifiers. They are an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The output common-mode voltage is user adjustable by means of an internal common-mode feedback loop, allowing the ADA4939-1/ADA4939-2 output to match the input of the ADC. The internal feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products.

Part	Datasheet
ADA4939-1YCPZ-R2	ADA4939-1YCPZ-R2 (pdf)

Related Parts	Information
ADA4939-2YCP-EBZ	ADA4939-2YCP-EBZ
ADA4939-1YCPZ-RL	ADA4939-1YCPZ-RL
ADA4939-2YCPZ-R2	ADA4939-2YCPZ-R2
ADA4939-1YCPZ-R7	ADA4939-1YCPZ-R7
ADA4939-2YCPZ-R7	ADA4939-2YCPZ-R7
ADA4939-2YCPZ-RL	ADA4939-2YCPZ-RL

PDF Datasheet Preview
Data Sheet Extremely low harmonic distortion −102 dBc HD2 at 10 MHz −83 dBc HD2 at 70 MHz −77 dBc HD2 at 100 MHz −101 dBc HD3 at 10 MHz −97 dBc HD3 at 70 MHz −91 dBc HD3 at 100 MHz Low input voltage noise High speed −3 dB bandwidth of GHz, G = 2 Slew rate 6800 V/us, 25% to 75% Fast overdrive recovery of <1 ns mV typical offset voltage Externally adjustable gain Stable for differential gains Differential-to-differential or single-ended-to-differential operation Adjustable output common-mode voltage Single-supply operation V to 5 V ADC drivers Single-ended-to-differential converters IF and baseband gain blocks Differential buffers Line drivers The ADA4939-1/ADA4939-2 are low noise, ultralow distortion, high speed differential amplifiers. They are an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The output common-mode voltage is user adjustable by means of an internal common-mode feedback loop, allowing the ADA4939-1/ADA4939-2 output to match the input of the ADC. The internal feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products. With the ADA4939-1/ADA4939-2, differential gain configurations are easily realized with a simple external feedback network of four resistors that determine the closed-loop gain of the amplifier. The ADA4939-1/ADA4939-2 are fabricated using Analog Devices, Inc., proprietary silicon-germanium SiGe , complementary bipolar process, enabling them to achieve very low levels of distortion with an input voltage noise of only The low dc offset and excellent dynamic performance of the ADA4939-1/ADA4939-2 make them well suited for a wide variety of data acquisition and signal processing applications. 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. Ultralow Distortion, Differential ADC Driver ADA4939-1/ADA4939-2 FUNCTIONAL BLOCK DIAGRAMS ADA4939-1 16 15 14 13 1 +IN 2 3 +FB 4 12 PD 11 10 +OUT 9 VOCM +VS 5 +VS 6 +VS 7 +VS 8 Figure ADA4939-1 07752-001 24 +IN1 23 22 21 20 PD1 19 1 +FB1 2 +VS1 3 +VS1 4 5 +IN2 6 ADA4939-2 18 +OUT1 17 VOCM1 16 15 14 PD2 7 +FB2 8 +VS2 9 +VS2 10 VOCM2 11 +OUT2 12 07429-002 Figure ADA4939-2 The ADA4939-1 single is available in a 3 mm x 3 mm, 16-lead LFCSP, and the ADA4939-2 dual is available in a 4 mm x 4 mm, 24-lead LFCSP. The pinouts are optimized to facilitate printed circuit board PCB layout and minimize distortion. The ADA4939-1/ADA4939-2 are specified to operate over the −40°C to +105°C temperature range both operate on supplies between V and 5 V. VOUT, dm = 2V p-p HARMONIC DISTORTION dBc 07429-021 0 Initial Version Data Sheet Theory of Operation 17 Analyzing an Application Circuit 17 Setting the Closed-Loop Gain 17 Stable for Gains 17 Estimating the Output Noise Voltage 17 Impact of Mismatches in the Feedback Networks 18 Calculating the Input Impedance for an Application Circuit 19 Input Common-Mode Voltage Range 21 Input and Output Capacitive AC Coupling............................ 21 Minimum RG Value of 50 Ω 21 Setting the Output Common-Mode Voltage 21 Layout, Grounding, and 22 High Performance ADC Driving 23 Outline Dimensions 24 Ordering Guide 24 Data Sheet ADA4939-1/ADA4939-2 SPECIFICATIONS 5 V OPERATION TA = 25°C, +VS = 5 V, −VS = 0 V, VOCM = +VS/2, RF = 402 Ω, RG = 200 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 42 for signal definitions. ±DIN to VOUT, dm Performance Table Parameter DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth for dB Flatness Large Signal Bandwidth Slew Rate 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 CMRR OUTPUT CHARACTERISTICS Output Voltage Swing Linear Output Current Output Balance Error Test Conditions/Comments VOUT, dm = V p-p VOUT, dm = V p-p, ADA4939-1 VOUT, dm = V p-p, ADA4939-2 VOUT, dm = 2 V p-p VOUT, dm = 2 V p-p, 25% to 75% VIN = 0 V to V step, G = See Figure 41 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 f = 100 kHz f = 100 MHz, ADA4939-2 VOS, dm = VOUT, dm/2, VDIN+ = VDIN− = V TMIN to TMAX variation TMIN to TMAX variation Differential Common mode cm, cm = ±1 V Maximum single-ended output, RF = RG = 10 dm, dm = 1 V, 10 MHz, see Figure 40 for test circuit Min Typ Max Unit 1400 1400 6800 V/µs −102 −83 −77 −101 −97 −91 −95 −89 6 −80 dBc dB −26 −10 180 450 1 −83 −77 mV µV/°C µA µA/°C µA pF V dB −64 ADA4939-1/ADA4939-2 VOCM to VOUT, cm Performance Table Parameter VOCM DYNAMIC PERFORMANCE −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 ADA4939-1YCPZ-R2 ADA4939-1YCPZ-RL ADA4939-1YCPZ-R7 ADA4939-2YCPZ-R2 ADA4939-2YCPZ-RL ADA4939-2YCPZ-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 13 12 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-8. Figure 24-Lead Frame Chip Scale Package [LFCSP] 4 mm x 4 mm Body and mm Package Height CP-24-10 Dimensions shown in millimeters 06-11-2012-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 16-Lead LFCSP 16-Lead LFCSP 24-Lead LFCSP 24-Lead LFCSP 24-Lead LFCSP Package Option CP-16-21 CP-16-21 CP-16-21 CP-24-10 CP-24-10 CP-24-10 Ordering Quantity 250 5,000 1,500 250 5,000 1,500 Branding H1E Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07429-0-5/16 A

PDF Datasheet Preview

Data Sheet

Extremely low harmonic distortion −102 dBc HD2 at 10 MHz −83 dBc HD2 at 70 MHz −77 dBc HD2 at 100 MHz −101 dBc HD3 at 10 MHz −97 dBc HD3 at 70 MHz −91 dBc HD3 at 100 MHz

Low input voltage noise High speed
−3 dB bandwidth of GHz, G = 2 Slew rate 6800 V/us, 25% to 75% Fast overdrive recovery of <1 ns mV typical offset voltage Externally adjustable gain Stable for differential gains Differential-to-differential or single-ended-to-differential operation Adjustable output common-mode voltage Single-supply operation V to 5 V

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

The ADA4939-1/ADA4939-2 are low noise, ultralow distortion, high speed differential amplifiers. They are an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The output common-mode voltage is user adjustable by means of an internal common-mode feedback loop, allowing the ADA4939-1/ADA4939-2 output to match the input of the ADC. The internal feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products.

With the ADA4939-1/ADA4939-2, differential gain configurations are easily realized with a simple external feedback network of four resistors that determine the closed-loop gain of the amplifier.

The ADA4939-1/ADA4939-2 are fabricated using Analog Devices, Inc., proprietary silicon-germanium SiGe , complementary bipolar process, enabling them to achieve very low levels of distortion with an input voltage noise of only The low dc offset and excellent dynamic performance of the ADA4939-1/ADA4939-2 make them well suited for a wide variety of data acquisition and signal processing applications.

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.

Ultralow Distortion, Differential ADC Driver ADA4939-1/ADA4939-2

FUNCTIONAL BLOCK DIAGRAMS

ADA4939-1
16 15 14 13
1 +IN 2 3 +FB 4
12 PD 11 10 +OUT 9 VOCM
+VS 5 +VS 6 +VS 7 +VS 8

Figure ADA4939-1
07752-001
24 +IN1 23 22 21 20 PD1 19
1 +FB1 2 +VS1 3 +VS1 4 5 +IN2 6

ADA4939-2
18 +OUT1 17 VOCM1 16 15
14 PD2
7 +FB2 8 +VS2 9 +VS2 10 VOCM2 11 +OUT2 12
07429-002

Figure ADA4939-2

The ADA4939-1 single is available in a 3 mm x 3 mm, 16-lead

LFCSP, and the ADA4939-2 dual is available in a 4 mm x 4 mm,
24-lead LFCSP. The pinouts are optimized to facilitate printed
circuit board PCB layout and minimize distortion. The

ADA4939-1/ADA4939-2 are specified to operate over the
−40°C to +105°C temperature range both operate on supplies
between V and 5 V.

VOUT, dm = 2V p-p

HARMONIC DISTORTION dBc
07429-021
0 Initial Version

Data Sheet

Theory of Operation 17 Analyzing an Application Circuit 17 Setting the Closed-Loop Gain 17 Stable for Gains 17 Estimating the Output Noise Voltage 17 Impact of Mismatches in the Feedback Networks 18 Calculating the Input Impedance for an Application Circuit 19 Input Common-Mode Voltage Range 21 Input and Output Capacitive AC Coupling............................ 21 Minimum RG Value of 50 Ω 21 Setting the Output Common-Mode Voltage 21

Layout, Grounding, and 22 High Performance ADC Driving 23 Outline Dimensions 24
Ordering Guide 24

Data Sheet

ADA4939-1/ADA4939-2

SPECIFICATIONS
5 V OPERATION

TA = 25°C, +VS = 5 V, −VS = 0 V, VOCM = +VS/2, RF = 402 Ω, RG = 200 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 42 for signal definitions. ±DIN to VOUT, dm Performance

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

Large Signal Bandwidth Slew Rate 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 CMRR OUTPUT CHARACTERISTICS Output Voltage Swing Linear Output Current Output Balance Error

Test Conditions/Comments

VOUT, dm = V p-p VOUT, dm = V p-p, ADA4939-1 VOUT, dm = V p-p, ADA4939-2 VOUT, dm = 2 V p-p VOUT, dm = 2 V p-p, 25% to 75% VIN = 0 V to V step, G = See Figure 41 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 f = 100 kHz f = 100 MHz, ADA4939-2

VOS, dm = VOUT, dm/2, VDIN+ = VDIN− = V TMIN to TMAX variation

TMIN to TMAX variation

Differential Common mode
cm, cm = ±1 V

Maximum single-ended output, RF = RG = 10
dm, dm = 1 V, 10 MHz, see Figure 40 for test circuit

Min Typ Max Unit
1400
1400
6800

V/µs
−102 −83 −77 −101 −97 −91 −95 −89 6 −80
dBc dB
−26 −10
180 450 1
−83
−77
mV µV/°C µA µA/°C µA pF V dB
−64

ADA4939-1/ADA4939-2

VOCM to VOUT, cm Performance

Table Parameter VOCM DYNAMIC PERFORMANCE
−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 ADA4939-1YCPZ-R2 ADA4939-1YCPZ-RL ADA4939-1YCPZ-R7 ADA4939-2YCPZ-R2 ADA4939-2YCPZ-RL ADA4939-2YCPZ-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
13 12

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-8.

Figure 24-Lead Frame Chip Scale Package [LFCSP] 4 mm x 4 mm Body and mm Package Height CP-24-10 Dimensions shown in millimeters
06-11-2012-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 16-Lead LFCSP 16-Lead LFCSP 24-Lead LFCSP 24-Lead LFCSP 24-Lead LFCSP

Package Option CP-16-21 CP-16-21 CP-16-21 CP-24-10 CP-24-10 CP-24-10
Ordering Quantity 250 5,000 1,500 250 5,000 1,500

Branding H1E

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

D07429-0-5/16 A

More datasheets: CY7C1020CV33-15ZC | CFRMT101-HF | CFRMT102-HF | CFRMT106-HF | 2N5308 | 2N5308_D26Z | 2N5308_D74Z | 2N5308_D75Z | 2N5308_D27Z | ADA4939-2YCP-EBZ

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ADA4939-1YCPZ-R2 Datasheet file may be downloaded here without warranties.

Datasheet ID: ADA4939-1YCPZ-R2 517804