Datasheet

ManualsBrandsANALOG DEVICES ManualsLinear ICsLinear IC - Op-amp J-FET MSOP 8

Low Noise, Precision, Rail-to-Rail Output,

JFET Dual Operational Amplifier

Data Sheet

ADA4610-2

Rev. B

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FEATURES

Low offset voltage

B grade: 0.4 mV maximum

A grade: 1 mV maximum

Low offset voltage drift

B grade: 4 µV/°C maximum

A grade: 8 µV/°C maximum

Low input bias current: 5 pA typical at V

= ±15 V

Dual-supply operation: ±4.5 V to ±15 V

Low noise

7.3 nV/√Hz typical at f = 1 kHz

0.45 µV p-p at 0.1 Hz to 10 Hz

Low distortion: 0.00006%

No phase reversal

Rail-to-rail output

Unity gain stable

APPLICATIONS

Instrumentation

Medical instruments

Multipole filters

Precision current measurement

Photodiode amplifiers

Sensors

Audio

PIN CONFIGURATIONS

NOTES

1. THE EXPOSED PAD MUST BE

CONNECTED TO V–.

1OUT A

2–IN A

3+I

N A

4V–

7 OUT B

8 V+

6 –IN B

5 +IN B

09646-001

PIN 1

INDICATOR

ADA4610-2

TOP VIEW

(Not to Scale)

Figure 1. 8-Lead LFCSP (CP Suffix)

09646-002

OUT A

–IN A

+IN A

V–

V+

OUT B

–IN B

+IN B

ADA4610-2

TOP VIEW

(Not to Scale)

Figure 2. 8-Lead SOIC_N (R Suffix) and 8-Lead MSOP (RM Suffix)

GENERAL DESCRIPTION

The ADA4610-2 is a dual channel, precision JFET amplifier

that features low input voltage and current noise, offset voltage,

input bias current, and rail-to-rail output.

The combination of low offset, noise, and very low input

bias current makes these amplifiers especially suitable for

high impedance sensor amplification and precise current

measurements using shunts. With excellent dc precision, low

noise, and fast settling time, the ADA4610-2 provides superior

accuracy in medical instruments, electronic measurement, and

automated test equipment. Unlike many competitive amplifiers,

the ADA4610-2 maintains fast settling performance with

substantial capacitive loads. Unlike many older JFET amplifiers,

the ADA4610-2 does not suffer from output phase reversal

when input voltages exceed the maximum common-mode

voltage range.

The fast slew rate and great stability with capacitive loads make

the ADA4610-2a perfect fit for high performance filters. Low

input bias currents, low offset, and low noise result in a wide

dynamic range for photodiode amplifier circuits. Low noise

and distortion, high output current, and excellent speed make

the ADA4610-2 a great choice for audio applications.

The ADA4610-2 is specified over the −40°C to +125°C

extended industrial temperature range.

The ADA4610-2 is available in the 8-lead narrow SOIC, 8-lead

MSOP, and 8-lead LFCSP packages.

Summary of content (21 pages)

PAGE 1
Low Noise, Precision, Rail-to-Rail Output, JFET Dual Operational Amplifier ADA4610-2 Data Sheet PIN CONFIGURATIONS OUT A 1 PIN 1 INDICATOR 8 V+ –IN A 2 ADA4610-2 7 OUT B +IN A 3 TOP VIEW (Not to Scale) 6 –IN B V– 4 5 +IN B 09646-001 Low offset voltage B grade: 0.4 mV maximum A grade: 1 mV maximum Low offset voltage drift B grade: 4 µV/°C maximum A grade: 8 µV/°C maximum Low input bias current: 5 pA typical at VSY = ±15 V Dual-supply operation: ±4.5 V to ±15 V Low noise 7.
PAGE 2
Powered by TCPDF (www.tcpdf.org) IMPORTANT LINKS for the ADA4610-2* Last content update 08/27/2013 12:56 pm PARAMETRIC SELECTION TABLES Looking for similar performance at lower price where higher offset and drift are acceptable? Consider the ADA4001-2. Find Similar Products By Operating Parameters DESIGN COLLABORATION COMMUNITY Collaborate Online with the ADI support team and other designers about select ADI products. Follow us on Twitter: www.twitter.com/ADI_News Like us on Facebook: www.facebook.
PAGE 3
ADA4610-2 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 ESD Caution...................................................................................6 Applications ....................................................................................... 1 Typical Performance Characteristics ..............................................7 Pin Configurations ...........................................................
PAGE 4
Data Sheet ADA4610-2 SPECIFICATIONS VSY = ±5 V, VCM = 0 V, TA = 25°C, unless otherwise noted. Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage (B Grade) 1 Symbol Test Conditions/Comments Min VOS Typ Max Unit 0.2 0.4 0.8 1 1.8 4 8 25 1.5 20 0.25 +2.5 mV mV mV mV µV/°C µV/°C pA nA pA nA V dB dB dB dB pF pF Ω −40°C < TA < +125°C Offset Voltage (A Grade)1 VOS 0.
PAGE 5
ADA4610-2 Data Sheet ELECTRICAL CHARACTERISTICS VSY = ±15 V, VCM = 0 V, TA = 25°C, unless otherwise noted. Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage (B Grade) 1 Symbol Test Conditions/Comments Min VOS Typ Max Unit 0.2 0.4 0.8 1 1.8 4 8 25 1.5 20 0.25 +12.5 mV mV mV mV µV/°C µV/°C pA nA pA nA V dB dB dB dB pF pF Ω −40°C < TA < +125°C Offset Voltage (A Grade)1 VOS 0.
PAGE 6
Data Sheet Parameter NOISE PERFORMANCE Peak-to-Peak Voltage Noise Voltage Noise Density 1 2 ADA4610-2 Symbol Test Conditions/Comments en p-p en 0.1 Hz to 10 Hz bandwidth f = 10 Hz f = 100 Hz f = 1 kHz f = 10 kHz Offset voltage does not include solder heat resistance. Guaranteed by design and characterization. Rev. B | Page 5 of 20 Min Typ 0.45 14 8.5 7.3 7.
PAGE 7
ADA4610-2 Data Sheet ABSOLUTE MAXIMUM RATINGS Table 4. Thermal Resistance Table 3.
PAGE 8
Data Sheet ADA4610-2 TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. 400 400 ADA4610-2 VSY = ±5V TA = 25°C SOIC 350 300 250 200 150 100 ADA4610-2 VSY = ±15V TA = 25°C SOIC 300 NUMBER OF CHANNELS 250 200 150 100 50 800 1000 1200 0 –1000 –800 –600 –400 –200 0 200 400 600 OFFSET VOLTAGE (µV) 09646-003 0 –1000 –800 –600 –400 –200 0 200 400 600 OFFSET VOLTAGE (µV) Figure 3. Input Offset Voltage Distribution Figure 6.
PAGE 9
ADA4610-2 Data Sheet 1M INPUT BIAS A, INPUT BIAS B (pA) ADA4610-2 SOIC VSY = ±5V 100k RL = ∞ TA = +25°C ADA4610-2 VSY = ±5V TA = 25°C 1 VDD – VOUT (V) 10k 1k 100 0.1 –4 –3 –2 –1 0 1 2 3 4 0.01 0.1 09646-055 1 –5 5 VCMI (V) Figure 9. Input Bias Current vs. Common Mode Voltage 1 10 IOUT SOURCE (mA) 100 09646-011 10 Figure 12. Dropout Voltage vs.
PAGE 10
Data Sheet ADA4610-2 ADA4610-2 100M SOIC VSY = ±15V RL = ∞ 10M ADA4610-2 10 VSY = ±15V TA = 25°C VOUT – VSS (V) 1M 100k 10k +85°C 0.1 100 +25°C 1 –15 –10 –5 0 5 10 15 COMMON-MODE VOLTAGE (V) 0.01 0.01 Figure 15. Input Bias Current vs. Common-Mode Voltage and Temperature 1 IOUT SINK (mA) 10 100 Figure 18. Dropout Voltage vs. Sink Current 120 100 ADA4610-2 VSY = ±15V INPUT BIAS CURRENT (pA) 0.
PAGE 11
ADA4610-2 1k Data Sheet 1k ADA4610-2 VSY = ±5V TA = 25°C 100 10 ZOUT (Ω) AV = +100 1 10 AV = +100 1 AV = +10 0.1 AV = +1 1 10 100 1k FREQUENCY (kHz) 10k 100k 0.01 0.1 09646-021 0.01 0.1 Figure 21. Closed-Loop Output Impedance vs. Frequency 270 ADA4610-2 VSY = ±15V TA = 25°C 225 RL = 2kΩ 180 60 135 40 90 20 45 0.1 1 10 100 FREQUENCY (kHz) 1k 10k PSRR– 60 40 PSRR+ 20 0 –45 –40 0.01 –90 100k –20 0.1 1 Figure 22. Open-Loop Gain and Phase vs.
PAGE 12
ADA4610-2 12 2 8 1 0 ADA4610-2 VSY = ±5V TA = 25°C AV = +1 RL = 2kΩ CL = 100pF –1 –2 2 3 4 ADA4610-2 VSY = ±15V TA = 25°C AV = +1 RL = 2kΩ CL = 100pF –4 5 6 TIME (µs) 7 8 9 10 –12 0 Figure 27. Large Signal Transient Response OUTPUT VOLTAGE (mV) 5 6 TIME (µs) 7 8 9 10 40 PSRR+ 9 10 25 ADA4610-2 VSY = ±5V TA = 25°C AV = +1 RL = 2kΩ CL = 100pF 0 –25 –50 0 10 100 FREQUENCY (kHz) 1k 10k –75 09646-025 1 0 Figure 28. PSRR vs.
PAGE 13
ADA4610-2 Data Sheet 100 OS+ 30 OS– 20 10 0.1 CAPACITANCE (nF) 1 10 1 0.001 09646-034 0 0.01 Figure 33. Overshoot vs. Load Capacitance 0.01 0.1 1 FREQUENCY (kHz) 10 Figure 35. Voltage Noise Density 75 50 ADA4610-2 45 VSY = ±15V TA = 25°C A = +1 40 V RL = 2kΩ V = 100mV p-p 35 IN 50 OVERSHOOT (%) 25 ADA4610-2 VSY = ±15V TA = 25°C AV = +1 RL = 2kΩ CL = 100pF 0 –25 OS+ 30 25 20 OS– 15 10 –50 0 1 2 3 4 5 6 TIME (µs) 7 8 9 10 0 0.01 Figure 34.
PAGE 14
Data Sheet ADA4610-2 COMPARATIVE VOLTAGE AND VARIABLE VOLTAGE GRAPHS 16 –40 ADA4610-2 VSY = ±15V TA = 25°C AV = +1 RL = 2kΩ CL = 100pF 12 8 –80 4 VOLTAGE (V) –100 0 –4 –120 –8 –140 OUTPUT INPUT –12 1 10 100 FREQUENCY (kHz) –16 09646-039 –160 0.1 0 0.1 0.2 1 0.7 0.8 0.9 1.0 8 9 10 300 ADA4610-2 VSY = ±15V TA = 25°C RL = 2kΩ FIN = 1kHz 0.1 ADA4610-2 VSY = ±15V TA = 25°C RL = 2kΩ 200 100 THD + N % VOLTAGE (nV) THD + N (%) 0.4 0.5 0.6 TIME (ms) Figure 40.
PAGE 15
ADA4610-2 Data Sheet 4.0 12 ISY FOR BOTH AMPLIFIERS (mA) 0.01% 0.1% 6 4 2 +125°C ADA4610-2 RL = ∞ 3.5 3.0 +25°C 2.5 +85°C –40°C 2.0 1.5 1.0 0 0 0.2 0.4 0.6 0.8 1.0 SETTLING TIME (µs) 1.2 1.4 0 0 Figure 43. Negative Step Settling Time 5 10 15 VSY (V) 20 25 30 Figure 44. Supply Current vs. Supply Voltage and Temperature Rev. B | Page 14 of 20 09646-047 0.
PAGE 16
Data Sheet ADA4610-2 APPLICATIONS INFORMATION COMPARATOR OPERATION 8 Although op amps are quite different from comparators, occasionally an unused section of a dual or a quad op amp may be used as a comparator; however, this is not recommended for any rail-to-rail output op amp. For rail-to-rail output op amps, the output stage is generally a ratioed current mirror with bipolar or MOSFET transistors.
PAGE 17
ADA4610-2 Data Sheet OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890) 8 4.00 (0.1574) 3.80 (0.1497) 5 1 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) 6.20 (0.2441) 5.80 (0.2284) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) COPLANARITY 0.10 SEATING PLANE 0.50 (0.0196) 0.25 (0.0099) 45° 8° 0° 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.
PAGE 18
Data Sheet ADA4610-2 0.60 MAX 5 2.95 2.75 SQ 2.55 PIN 1 INDICATOR 8 EXPOSED PAD 4 0.50 0.40 0.30 TOP VIEW 12° MAX 0.90 MAX 0.85 NOM SEATING PLANE 0.70 MAX 0.65 TYP 0.05 MAX 0.01 NOM 0.30 0.23 0.18 0.50 BSC 0.60 MAX 1.60 1.50 1.40 1 BOTTOM VIEW 2.23 2.13 2.03 PIN 1 INDICATOR FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION SECTION OF THIS DATA SHEET. 0.20 REF 04-06-2012-A 3.25 3.00 SQ 2.75 Figure 49.
PAGE 19
ADA4610-2 Data Sheet NOTES Rev.
PAGE 20
Data Sheet ADA4610-2 NOTES Rev.