ADA4805-2-EP data sheet

FEATURES
TYPICAL APPLICATIONS CIRCUIT
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC standard)
Extended industrial temperature range (−55°C to +125°C)
Controlled manufacturing baseline
1 assembly/test site
1 fabrication site
Enhanced product change notification
Qualification data available upon request
+7.5V
5V REF
VDD
C2
10µF
C4
100nF
C3
0.1µF
+7.5V
ADA4805-2-EP
0V TO
VREF
R3
20Ω
IN+
C1
2.7nF
REF VDD
AD7980
IN–
GND
Figure 1. Driving the AD7980 with the ADA4805-2-EP
The Analog Devices, Inc., proprietary extra fast complementary
bipolar (XFCB) process allows both low voltage and low current
noise (5.9 nV/√Hz, 0.6 pA/√Hz). The ADA4805-2-EP operates
over a wide range of supply voltages from ±1.5 V to ±5 V, as well as
single 3 V and 5 V supplies, making it ideal for high speed, low
power instruments.
The ADA4805-2-EP is available in an 8-lead MSOP package and is
rated to work over the extended industrial temperature range of
−55°C to +125°C. Additional application and technical information can be found in the ADA4805-1/ADA4805-2 data sheet.
0
INPUT FREQUENCY = 10kHz
SNR = 89.4dB
THD = 104dB
SINAD = 89.3dB
–20
–40
High resolution, high precision analog-to-digital converter
(ADC) drivers
Battery-powered instrumentation
Micropower active filters
Portable point of sales terminals
Active radio frequency identification (RFID) readers
Photomultipliers
ADC reference buffers
–60
AMPLITUDE (dB)
APPLICATIONS
–80
–100
–120
–140
–160
–180
GENERAL DESCRIPTION
0
The ADA4805-2-EP is a high speed voltage feedback, rail-to-rail
output amplifier with an exceptionally low quiescent current of
500 µA, making it ideal for low power, high resolution data
conversion systems. Despite being low power, this amplifier
provides excellent overall performance. It offers a high bandwidth
of 105 MHz at a gain of +1, a high slew rate of 160 V/µs, and a
low input offset voltage of 125 µV (maximum).
Rev. 0
ADA4805-2-EP
ADR435
13741-010
Low input offset voltage: 125 µV (maximum)
Low input offset voltage drift
0.4 µV/°C (typical)
2.7 µV/°C (maximum)
Ultralow supply current: 500 µA per amplifier
Fully specified at VS = 3 V, 5 V, ±5 V
High speed performance
−3 dB bandwidth: 105 MHz
Slew rate: 160 V/µs
Settling time to 0.1%: 35 ns
Rail-to-rail outputs
Input common-mode range: −VS − 0.1 V to +VS − 1 V
Low noise: 5.9 nV/√Hz at 100 kHz; 0.6 pA/√Hz at 100 kHz
Low distortion: −102 dBc/−126 dBc HD2/HD3 at 100 kHz
Low input bias current: 470 nA (typical)
Small packaging
8-lead MSOP
10
20
30
40
50
FREQUENCY (kHz)
60
70
80
13741-102
Enhanced Product
0.4 µV/°C Offset Drift, 105 MHz Low Power,
Low Noise, Rail-to-Rail Amplifier
ADA4805-2-EP
Figure 2. FFT Plot for the Circuit Configuration in Figure 1
Table 1. Complementary ADCs to the ADA4805-2-EP
Product
AD7982
AD7984
AD7980
AD7685
ADC Power (mW)
7.0
10.5
4.0
10
Throughput
(MSPS)
1
1.33
1
0.25
Resolution
(Bits)
18
18
16
16
SNR
(dB)
98
98.5
91
88
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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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
ADA4805-2-EP
Enhanced Product
TABLE OF CONTENTS
Features .............................................................................................. 1
Absolute Maximum Ratings ............................................................6
Enhanced Product Features ............................................................ 1
Thermal Resistance .......................................................................6
Applications ....................................................................................... 1
Maximum Power Dissipation ......................................................6
General Description ......................................................................... 1
ESD Caution...................................................................................6
Typical Applications Circuit............................................................ 1
Pin Configuration and Function Descriptions..............................7
Revision History ............................................................................... 2
Typical Performance Characteristics ..............................................8
Specifications..................................................................................... 3
Outline Dimensions ..........................................................................9
±5 V Supply ................................................................................... 3
Ordering Guide .............................................................................9
5 V Supply...................................................................................... 4
3 V Supply...................................................................................... 5
REVISION HISTORY
4/16—Revision 0: Initial Version
Rev. 0 | Page 2 of 9
Enhanced Product
ADA4805-2-EP
SPECIFICATIONS
±5 V SUPPLY
VS = ±5 V at TA = 25°C; RF = 0 Ω for G = +1; otherwise, RF = 1 kΩ; RL = 2 kΩ to ground; unless otherwise noted. All specifications are per
amplifier.
Table 2.
Parameter
DYNAMIC PERFORMANCE
−3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion, HD2/HD31
Input Voltage Noise
Input Voltage Noise 1/f Corner Frequency
0.1 Hz to 10 Hz Voltage Noise
Input Current Noise
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift2
Input Bias Current
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Common Mode
Differential Mode
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time (Rising/Falling Edge)
Output Voltage Swing
Short-Circuit Current
Linear Output Current
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
Power Supply Rejection Ratio
Positive
Negative
1
2
Test Conditions/Comments
Min
Typ
Max
Unit
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V p-p
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V step
G = +2, VOUT = 4 V step
G = +1, VOUT = 2 V step
G = +2, VOUT = 4 V step
120
40
18
190
250
35
78
MHz
MHz
MHz
V/µs
V/µs
ns
ns
fC = 20 kHz, VOUT = 2 V p-p
fC = 100 kHz, VOUT = 2 V p-p
fC = 20 kHz, VOUT = 4 V p-p, G = +1
fC = 100 kHz, VOUT = 4 V p-p, G = +1
fC = 20 kHz, VOUT = 4 V p-p, G = +2
fC = 100 kHz, VOUT = 4 V p-p, G = +2
f = 100 kHz
−114/−140
−102/−128
−109/−143
−93/−130
−113/−142
−96/−130
5.2
8
44
0.7
dBc
dBc
dBc
dBc
dBc
dBc
nV/√Hz
Hz
nV rms
pA/√Hz
f = 100 kHz
TMIN to TMAX
VOUT = −4.0 V to +4.0 V
107
13
0.4
550
2.1
111
125
2.7
800
25
50
260
1
VIN, CM = −4.0 V to +4.0 V
VIN = +6 V to −6 V, G = +2
RL = 2 kΩ
Sinking/sourcing
<1% THD at 100 kHz, VOUT = 2 V p-p
30% overshoot
−5.1
103
+4
130
95/100
−4.98
+4.98
85/73
±58
15
2.7
570
+VS = 3 V to 5 V, −VS = −5 V
+VS = 5 V, −VS = −3 V to −5 V
fC is the fundamental frequency.
Guaranteed, but not tested.
Rev. 0 | Page 3 of 9
100
100
119
122
10
625
µV
µV/°C
nA
nA
dB
MΩ
kΩ
pF
V
dB
ns
V
mA
mA
pF
V
µA
dB
dB
ADA4805-2-EP
Enhanced Product
5 V SUPPLY
VS = 5 V at TA = 25°C; RF = 0 Ω for G = +1; otherwise, RF = 1 kΩ; RL = 2 kΩ to midsupply; unless otherwise noted. All specifications are
per amplifier.
Table 3.
Parameter
DYNAMIC PERFORMANCE
−3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion, HD2/HD31
Input Voltage Noise
Input Voltage Noise 1/f Corner
0.1 Hz to 10 Hz Voltage Noise
Input Current Noise
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift2
Input Bias Current
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Common Mode
Differential Mode
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Overdrive Recovery Time (Rising/Falling
Edge)
Output Voltage Swing
Short-Circuit Current
Linear Output Current
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
Power Supply Rejection Ratio
Positive
Negative
1
2
Test Conditions/Comments
Min
Typ
Max
Unit
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V p-p
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V step
G = +2, VOUT = 4 V step
G = +1, VOUT = 2 V step
G = +2, VOUT = 4 V step
105
35
20
160
220
35
82
MHz
MHz
MHz
V/µs
V/µs
ns
ns
fC = 20 kHz, VOUT = 2 V p-p
fC = 100 kHz, VOUT = 2 V p-p
fC = 20 kHz, G = +2, VOUT = 4 V p-p
fC = 100 kHz, G = +2, VOUT = 4 V p-p
f = 100 kHz
−114/−135
−102/−126
−107/−143
−90/−130
5.9
8
54
0.6
dBc
dBc
dBc
dBc
nV/√Hz
Hz
nV rms
pA/√Hz
f = 100 kHz
TMIN to TMAX
VOUT = 1.25 V to 3.75 V
105
9
0.4
470
0.4
109
125
2.7
720
50
260
1
VIN, CM = 1.25 V to 3.75 V
−0.1
103
VIN = −1 V to +6 V, G = +2
RL = 2 kΩ
Sinking/sourcing
<1% THD at 100 kHz, VOUT = 2 V p-p
30% overshoot
133
MΩ
kΩ
pF
V
dB
130/145
ns
+4
0.02
500
fC is the fundamental frequency.
Guaranteed, but not tested.
Rev. 0 | Page 4 of 9
4.98
V
mA
mA
pF
10
520
V
µA
73/63
±47
15
2.7
+VS = 1.5 V to 3.5 V, −VS = −2.5 V
+VS = 2.5 V, −VS = −1.5 V to −3.5 V
100
100
µV
µV/°C
nA
nA
dB
120
126
dB
dB
Enhanced Product
ADA4805-2-EP
3 V SUPPLY
VS = 3 V at TA = 25°C; RF = 0 Ω for G = +1; otherwise, RF = 1 kΩ; RL = 2 kΩ to midsupply; unless otherwise noted. All specifications are
per amplifier.
Table 4.
Parameter
DYNAMIC PERFORMANCE
−3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion, HD2/HD31
Input Voltage Noise
Input Voltage Noise 1/f Corner
0.1 Hz to 10 Hz Voltage Noise
Input Current Noise
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift2
Input Bias Current
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Common Mode
Differential Mode
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time
(Rising/Falling Edge)
Output Voltage Swing
Short-Circuit Current
Linear Output Current
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
Power Supply Rejection Ratio
Positive
Negative
1
2
Test Conditions/Comments
Min
Typ
Max
Unit
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 1 V step, +VS = 2 V, −VS = −1 V
G = +1, VOUT = 1 V step
95
30
35
85
41
MHz
MHz
MHz
V/µs
ns
fC = 20 kHz, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V
fC = 100 kHz, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V
f = 100 kHz
−123/−143
−107/−133
6.3
8
55
0.8
dBc
dBc
nV/√Hz
Hz
nV rms
pA/√Hz
f = 100 kHz
TMIN to TMAX
VOUT = 1.1 V to 1.9 V
100
7
0.4
440
0.5
107
125
2.7
690
50
260
1
VIN, CM = 0.5 V to 2 V
−0.1
89
VIN = −1 V to +4 V, G = +2
RL = 2 kΩ
Sinking/sourcing
<1% THD at 100 kHz, VOUT = 1 V p-p
30% overshoot
117
MΩ
kΩ
pF
V
dB
135/175
ns
+2
0.02
470
fC is the fundamental frequency.
Guaranteed, but not tested.
Rev. 0 | Page 5 of 9
2.98
V
mA
mA
pF
10
495
V
µA
65/47
±40
15
2.7
+VS = 1.5 V to 3.5 V, −VS = −1.5 V
+VS = 1.5 V, −VS = −1.5 V to −3.5 V
96
96
µV
µV/°C
nA
nA
dB
119
125
dB
dB
ADA4805-2-EP
Enhanced Product
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter
Supply Voltage
Power Dissipation
Common-Mode Input Voltage
Differential Input Voltage
Storage Temperature Range
Operating Temperature Range
Lead Temperature (Soldering, 10 sec)
Junction Temperature
Rating
11 V
See Figure 3
−VS − 0.7 V to +VS + 0.7 V
±1 V
−65°C to +125°C
−55°C to +125°C
300°C
150°C
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
THERMAL RESISTANCE
θJA is specified for the worst case conditions, that is, θJA is specified
for a device soldered in a circuit board for surface-mount packages.
Table 6 lists the θJA for the ADA4805-2-EP.
The quiescent power dissipation is the voltage between the supply
pins (VS) multiplied by the quiescent current (IS).
PD = Quiescent Power + (Total Drive Power − Load Power)
V
V
PD = (VS × I S ) +  S × OUT
RL
 2
RMS output voltages must be considered. If RL is referenced
to −VS, as in single-supply operation, the total drive power is
VS × IOUT. If the rms signal levels are indeterminate, consider the
worst case, when VOUT = VS/4 for RL to midsupply.
PD = (VS × I S ) +
(VS / 4)2
RL
In single-supply operation with RL referenced to −VS, worst case
is VOUT = VS/2.
Airflow increases heat dissipation, effectively reducing θJA. Also,
more metal directly in contact with the package leads and exposed
pad from metal traces, through holes, ground, and power planes
reduces θJA.
Figure 3 shows the maximum safe power dissipation in the
package vs. the ambient temperature on a JEDEC standard,
4-layer board. θJA values are approximations.
Table 6. Thermal Resistance
2.0
TJ = 150°C
Unit
°C/W
MAXIMUM POWER DISSIPATION
The maximum safe power dissipation for the ADA4805-2-EP is
limited by the associated rise in junction temperature (TJ) on
the die. At approximately 150°C, which is the glass transition
temperature, the properties of the plastic change. Even temporarily
exceeding this temperature limit may change the stresses that the
package exerts on the die, permanently shifting the parametric
performance of the ADA4805-2-EP. Exceeding a junction temperature of 175°C for an extended period of time can result in changes
in silicon devices, potentially causing degradation or loss of
functionality.
The power dissipated in the package (PD) is the sum of the
quiescent power dissipation and the power dissipated in the die
due to the ADA4805-2-EP output load drive.
1.6
8-LEAD MSOP
1.2
0.8
0.4
0
–55
–35
–15
5
25
45
65
85
AMBIENT TEMPERATURE (°C)
105
125
13741-011
θJA
123.8
MAXIMUM POWER DISSIPATION (W)
Package Type
8-Lead MSOP
 V 2
 − OUT

RL

Figure 3. Maximum Power Dissipation vs. Temperature for a 4-Layer Board
ESD CAUTION
Rev. 0 | Page 6 of 9
Enhanced Product
ADA4805-2-EP
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
8
+VS
–IN1 2
7
VOUT2
+IN1 3
6
–IN2
–VS 4
5
+IN2
13741-004
ADA4805-2-EP
VOUT1 1
Figure 4. 8-Lead MSOP Pin Configuration
Table 7. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
Mnemonic
VOUT1
−IN1
+IN1
−VS
+IN2
−IN2
VOUT2
+VS
Description
Output 1.
Inverting Input 1.
Noninverting Input 1.
Negative Supply.
Noninverting Input 2.
Inverting Input 2.
Output 2.
Positive Supply.
Rev. 0 | Page 7 of 9
ADA4805-2-EP
Enhanced Product
TYPICAL PERFORMANCE CHARACTERISTICS
RL = 2 kΩ, unless otherwise noted. When G = +1, RF = 0 Ω.
3
3
–55°C
+25°C
+125°C
CLOSED-LOOP GAIN (dB)
+25°C
–3
+125°C
–6
100
1000
–9
0.1
750
INPUT BIAS CURRENT (nA)
700
VS = ±5V
600
550
VS = ±1.5V
VS = ±2.5V
700
VS = ±5V
650
VS = ±2.5V
600
550
500
400
450
350
400
300
–55 –40 –25 –10
20
5
35
65
50
80
110 125
95
TEMPERATURE (°C)
VS = ±1.5V
350
–55 –40 –25 –10
13741-256
QUIESCENT SUPPLY CURRENT (µA)
800
750
450
100
Figure 8. Large Signal Frequency Response for Various Temperatures
800
500
10
FREQUENCY (MHz)
Figure 5. Small Signal Frequency Response for Various Temperatures
650
1
13741-016
10
1
FREQUENCY (MHz)
5
20
35
50
65
80
95
110 125
TEMPERATURE (°C)
Figure 9. Input Bias Current vs. Temperature for Various Supplies
Figure 6. Quiescent Supply Current vs. Temperature for Various Supplies
150
30
VS = ±2.5V
VS = ±2.5V
TA = –55°C TO +125°C
x = 0.43V/°
σ = 0.32V/°C
100
INPUT OFFSET VOLTAGE (µV)
25
20
15
10
50
0
–50
1.6
13741-323
INPUT OFFSET VOLTAGE DRIFT (µV/°C)
1.4
1.2
1.0
0.8
0.6
0.4
0
0.2
–0.2
–0.4
–0.6
–0.8
–150
–55 –40 –25 –10
–1.0
0
–1.2
–100
–1.4
5
–1.6
PERCENTAGE OF UNITS (%)
–6
13741-257
–12
0.1
–55°C
–3
VS = ±2.5V
G = +1
VOUT = 2V p-p
RL = 2kΩ
VS = ±2.5V
G = +1
VOUT = 20mV p-p
RL = 2kΩ
13741-208
–9
0
5
20
35
50
65
80
95
TEMPERATURE (°C)
Figure 7. Input Offset Voltage Drift Distribution
Figure 10. Input Offset Voltage vs. Temperature
Rev. 0 | Page 8 of 9
110 125
13741-013
CLOSED-LOOP GAIN (dB)
0
Enhanced Product
ADA4805-2-EP
OUTLINE DIMENSIONS
3.20
3.00
2.80
8
3.20
3.00
2.80
1
5
5.15
4.90
4.65
4
PIN 1
IDENTIFIER
0.65 BSC
0.95
0.85
0.75
15° MAX
1.10 MAX
0.40
0.25
6°
0°
0.23
0.09
0.80
0.55
0.40
COMPLIANT TO JEDEC STANDARDS MO-187-AA
10-07-2009-B
0.15
0.05
COPLANARITY
0.10
Figure 11. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model1
ADA4805-2TRMZ-EP
ADA4805-2TRMZ-EPR7
1
Temperature Range
−55°C to +125°C
−55°C to +125°C
Package Description
8-Lead Mini Small Outline Package [MSOP]
8-Lead Mini Small Outline Package [MSOP]
Z = RoHS Compliant Part.
©2016 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D13741-0-4/16(0)
Rev. 0 | Page 9 of 9
Package Option
RM-8
RM-8
Branding
Y5W
Y5W
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