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AD844AN

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
AD844
Rev. F | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagrams ............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
Metallization Photograph ............................................................ 5
ESD Caution .................................................................................. 5
Typical Performance Characteristics ............................................. 6
Inverting Gain-of-1 AC Characteristics .................................... 8
Inverting Gain-of-10 AC Characteristics .................................. 9
Inverting Gain-of-10 Pulse Response ...................................... 10
Noninverting Gain-of-10 AC Characteristics ........................ 11
Understanding the AD844 ............................................................ 12
Open-Loop Behavior ................................................................. 12
Response as an Inverting Amplifier ......................................... 12
Response as an I-V Converter .................................................. 13
Circuit Description of the AD844 ............................................ 13
Response as a Noninverting Amplifier .................................... 14
Noninverting Gain of 100 ......................................................... 14
Using the AD844 ............................................................................ 15
Board Layout ............................................................................... 15
Input Impedance ........................................................................ 15
Driving Large Capacitive Loads ............................................... 15
Settling Time ............................................................................... 15
DC Error Calculation ................................................................ 16
Noise ............................................................................................ 16
Video Cable Driver Using ±5 V Supplies ................................ 16
High Speed DAC Buffer ............................................................ 17
20 MHz Variable Gain Amplifier ............................................. 17
Outline Dimensions ....................................................................... 19
Ordering Guide .......................................................................... 20
REVISION HISTORY
2/09—Rev. E to Rev F
Updated Format .................................................................. Universal
Changes to Features Section............................................................ 1
Changes to Differential Phase Error Parameter, Table 1 ............. 3
Changes to Figure 13 ........................................................................ 8
Changes to Figure 18 ........................................................................ 9
Changes to Figure 23 and Figure 24 ............................................. 11
Changes to Figure 42 and High Speed DAC Buffer Section ..... 17
Updated Outline Dimensions ....................................................... 19
Changes to Ordering Guide .......................................................... 20
1/03 Data Sheet changed from REV. D to REV. E.
Updated Features ............................................................................... 1
Edit to TPC 18 ................................................................................... 7
Edits to Figure 13 and Figure 14 ................................................... 13
Updated Outline Dimensions ....................................................... 15
11/01 Data Sheet changed from REV. C to REV. D.
Edits to Specifications ...................................................................... 2
Edits to Absolute Maximum Ratings .............................................. 3
Edits to Ordering Guide ................................................................... 3
AD844
Rev. F | Page 3 of 20
SPECIFICATIONS
T
A
= 25°C and V
S
= ±15 V dc, unless otherwise noted.
Table 1.
AD844J/AD844A AD844B AD844S
Parameter Conditions Min Typ Max Min Typ Max Min Typ Max Unit
INPUT OFFSET VOLTAGE
1
50 300
50 150
50 300 V
T
MIN
to T
MAX
75 500
75 200
125 500 V
vs. Temperature
1 1 5
1 5 V/°C
vs. Supply 5 V to 18 V
Initial
4 20
4 10
4 20 V/V
T
MIN
to T
MAX
4 4 10
4 20 V/V
vs. Common Mode V
CM
= ±10 V
Initial
10 35
10 20
10 35 V/V
T
MIN
to T
MAX
10 10 20
10 35 V/V
INPUT BIAS CURRENT
Negative Input Bias Current
1
200 450
150 250
200 450 nA
T
MIN
to T
MAX
800 1500
750 1100
1900 2500 nA
vs. Temperature
9 9 15
20 30 nA/°C
vs. Supply 5 V to 18 V
Initial
175 250
175 200
175 250 nA/V
T
MIN
to T
MAX
220 220 240
220 300 nA/V
vs. Common Mode V
CM
= ±10 V
Initial
90 160
90 110
90 160 nA/V
T
MIN
to T
MAX
110
110 150
120 200 nA/V
Positive Input Bias Current
1
150 400
100 200
100 400 nA
T
MIN
to T
MAX
350 700
300 500
800 1300 nA
vs. Temperature
3 3 7
7 15 nA/°C
vs. Supply 5 V to 18 V
Initial
80 150
80 100
80 150 nA/V
T
MIN
to T
MAX
100 100 120
120 200 nA/V
vs. Common Mode V
CM
= ±10 V
Initial
90 150
90 120
90 150 nA/V
T
MIN
to T
MAX
130 130 190
140 200 nA/V
INPUT CHARACTERISTICS
Input Resistance
Negative Input
50 65
50 65
50 65 Ω
Positive Input 7 10
7 10 7 10
MΩ
Input Capacitance
Negative Input
2
2
2 pF
Positive Input
2
2 2 pF
Input Common-Mode Voltage
Range
±10 ±10 ±10 V
INPUT VOLTAGE NOISE f ≥ 1 kHz 2
2 2 nV/√Hz
INPUT CURRENT NOISE
Negative Input f ≥ 1 kHz 10
10
10 pV/√Hz
Positive Input f ≥ 1 kHz 12
12
12 pV/√Hz
OPEN-LOOP TRANSRESISTANCE V
OUT
= ±10 V
R
L
= 500 Ω 2.2 3.0
2.8 3.0 2.2 3.0 MΩ
T
MIN
to T
MAX
1.3 2.0
1.6 2.0
1.3 1.6 MΩ
Transcapacitance 4.5
4.5
4.5 pF
DIFFERENTIAL GAIN ERROR
2
f = 4.4 MHz 0.03
0.03
0.03 %
DIFFERENTIAL PHASE ERROR
2
f = 4.4 MHz 0.16
0.16 0.16 Degree
AD844
Rev. F | Page 4 of 20
AD844J/AD844A AD844B AD844S
Parameter Conditions Min Typ Max Min Typ Max Min Typ Max Unit
FREQUENCY RESPONSE
Small Signal Bandwidth
3, 4
Gain = −1 60
60
60 MHz
Gain = −10 33
33
33 MHz
TOTAL HARMONIC DISTORTION
f = 100 kHz,
2 V rms
5
0.005
0.005
0.005 %
SETTLING TIME
10 V Output Step ±15 V supplies
Gain = −1, to 0.1%
5
100
100
100 ns
Gain = −10, to 0.1%
6
100
100
100 ns
2 V Output Step ±5 V supplies
Gain = −1, to 0.1%
5
110
110
110 ns
Gain = −10, to 0.1%
6
100
100
100 ns
OUTPUT SLEW RATE
Overdriven
input
1200 2000
1200 2000
1200 2000 V/µs
FULL POWER BANDWIDTH THD = 3%
V
OUT
= 20 V p-p
5
V
S
= ±15 V 20
20 20 MHz
V
OUT
= 2 V p-p
5
V
S
= ±5 V 20
20 20 MHz
OUTPUT CHARACTERISTICS
Voltage R
L
= 500 Ω ±10 ±11
±10 ±11
±10 ±11
V
Short-Circuit Current 80
80
80 mA
T
MIN
to T
MAX
60
60
60 mA
Output Resistance Open loop 15
15
15 Ω
POWER SUPPLY
Operating Range ±4.5 ±18 ±4.5 ±18 ±4.5 ±18 V
Quiescent Current 6.5 7.5
6.5 7.5
6.5 7.5 mA
T
MIN
to T
MAX
7.5 8.5
7.5 8.5
7.5 8.5 mA
1
Rated performance after a 5 minute warm-up at T
A
= 25°C.
2
Input signal 285 mV p-p carrier (40 IRE) riding on 0 mV to 642 mV (90 IRE) ramp. R
L
= 100 Ω; R1, R2 = 300 Ω.
3
For gain = −1, input signal = 0 dBm, C
L
= 10 pF, R
L
= 500 Ω, R1 = 500 Ω, and R2 = 500 Ω in . Figure 29
Figure 29
Figure 29
Figure 29.
4
For gain = −10, input signal = 0 dBm, C
L
=10 pF, R
L
= 500 Ω, R1 = 500 Ω, and R2 = 50 Ω in .
5
C
L
= 10 pF, R
L
= 500 Ω, R1 = 1 kΩ, R2 = 1 kΩ in .
6
C
L
= 10 pF, R
L
= 500 Ω, R1 = 500 Ω, R2 = 50 Ω in
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

AD844AN

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Manufacturer:
Analog Devices Inc.
Description:
Operational Amplifiers - Op Amps 60MHz 2000V/uS Monolithic
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