a
FEATURES
Usable Closed-Loop Gain Range: 1 to 40
Low Distortion: –67 dBc (2nd) at 20 MHz
Small Signal Bandwidth: 190 MHz (A
V
= +3)
Large Signal Bandwidth: 150 MHz at 4 V p-p
Settling Time: 10 ns to 0.1%; 14 ns to 0.02%
Overdrive and Output Short Circuit Protected
Fast Overdrive Recovery
DC Nonlinearity 10 ppm
APPLICATIONS
Driving Flash Converters
D/A Current-to-Voltage Converters
IF, Radar Processors
Baseband and Video Communications
Photodiode, CCD Preamps
Low Distortion, Precision,
Wide Bandwidth Op Amp
AD9617
PIN CONFIGURATION
NC
1
–INPUT
2
+INPUT
3
–V
S
4
AD9617
8
*
7
+V
S
6
OUTPUT
5
**
*
OPTIONAL +V
S
NC = NO CONNECT
**
OPTIONAL –V
S
NOTE:
FOR BEST SETTLING TIME AND DISTORTION
PERFORMANCE, USE OPTIONAL SUPPLY
CONNECTIONS. PERFORMANCE INDICATED
IN SPECIFICATIONS IS BASED ON SUPPLY
CONNECTIONS TO THESE PINS.
GENERAL DESCRIPTION
The AD9617 is a current feedback amplifier which utilizes a
proprietary architecture to produce superior distortion and dc
precision. It achieves this along with fast settling, very fast slew
rate, wide bandwidth (both small signal and large signal) and
exceptional signal fidelity. The device achieves –67 dBc 2nd
harmonic distortion at 20 MHz while maintaining 190 MHz
small signal and 150 MHz large signal bandwidths.
These attributes position the AD9617 as an ideal choice for
driving flash ADCs and buffering the latest generation of
DACs. Optimized for applications requiring gain between
±
1
to
±
15, the AD9617 is unity gain stable without external
compensation.
The AD9617 offers outstanding performance in high fidelity,
wide bandwidth applications in instrumentation ranging from
network and spectrum analyzers to oscilloscopes, and in military
systems such as radar, SIGINT and ESM systems. The superior
slew rate, low overshoot and fast settling of the AD9617 allow the
device to be used in pulse applications such as communications
receivers and high speed ATE. Most monolithic op amps suffer
in these precision pulse applications due to slew rate limiting.
The AD9617J operates over the range of 0°C to +70°C and is
available in either an 8-lead plastic DIP or an 8-1ead plastic
small outline package (SOIC).
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999
AD9617–SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
1
Supply Voltages (± V
S
) . . . . . . . . . . . . . . . . . . . . . . . . . . . +7 V
Common-Mode Input Voltage . . . . . . . . . . . . . . . . . . . . .
±
Vs
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 3 V
Continuous Output Current
2
. . . . . . . . . . . . . . . . . . . . . 70 mA
Operating Temperature Ranges
AD9617JN/JR . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Storage Temperature
AD9617JN/JR . . . . . . . . . . . . . . . . . . . . . –65°C to +125°C
Junction Temperature
3
AD9617JN/JR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Lead Soldering Temperature (10 Seconds) . . . . . . . . . +300°C
NOTES
1
Absolute maximum ratings are limiting values to be applied individually and
beyond which the serviceability of the circuit may be impaired. Functional
operability is not necessarily implied. Exposure to absolute maximum rating
conditions for an extended period of time may affect device reliability.
2
Output is short circuit protected to ground, but not to supplies. Continuous
short circuit to ground may affect device reliability.
3
Typical thermal impedances (part soldered onto board):
Plastic DIP:
θ
JA
= 140°C/W;
θ
JC
= 30°C/W. SOIC Package:
θ
JA
= 155°C/W;
θ
JC
= 40°C/W.
DC ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, A = +3;
V
V
S
=
5 V; R
F
= 400
; R
LOAD
= 100
)
Units
Parameter
Input Offset Voltage
1, 2
Input Offset Voltage TC
2
Input Bias Current
2
Inverting
Noninverting
Input Bias Current TC
2
Noninverting
Inverting
Input Resistance
Noninverting
Input Capacitance
Noninverting
Common-Mode Input Range
3
Common-Mode Rejection Ratio
4
Power Supply Rejection Ratio
Open Loop Gain
T
O
Nonlinearity
Output Voltage Range
Output Impedance
Output Current (50
Ω
Load)
Conditions
Test
Temp Level
+25°C I
Full
IV
+25°C I
+25°C I
Full
Full
IV
IV
AD9617JN/JR
AD9617AQ/SQ*
Min Typ Max Min Typ Max
–1.1
–4
–50
–25
–50
–50
+0.5 +2.2 –1.1
+3
+25 –4
0
+5
+30
+50
60
1.5
±
1.4
±
1.5
±
1.7
±
1.8
44
48
48
51
48
51
500
10
±
3.4
±
3.8
0.07
60
50
+50
+35
–50
–25
+0.5 +2.2
+3
+25
0
+5
+30
+50
60
1.5
±
1.4
±
1.5
±
1.7
±
1.8
44
48
48
51
48
51
500
10
±
3.4
±
3.8
0.07
60
50
+50
+35
+125
+150
AD9617BQ/TQ*
Min Typ Max
+0.0
–4
–25
–15
–50
–50
+0.5 +1.35 mV
+3
+25
µV/°C
0
+5
+30
+50
60
+25
+20
+125
+150
µA
µA
nA/°C
nA/°C
kΩ
pF
V
V
dB
dB
dB
kΩ
ppm
V
Ω
mA
mA
+125 –50
+150 –50
+25°C V
+25°C
←
←
←
←
Full
+25°C
+25°C
+25°C
+25°C
←
←
V
II
II
II
II
II
V
IV
II
V
II
II
T = T
MAX
T = T
MIN
to +25°C
T = T
MIN
to T
MAX
T = T
MIN
to +25°C
∆V
S
=
±
5%
At DC
At DC
At DC
T = +25°C to T
MAX
T = T
MIN
±
1.4
±
1.7
44
48
48
1.5
±
1.5
±
1.8
48
51
51
500
10
+3.8
0.07
±
3.4
60
50
NOTES
*Pending obsoletion: last-time buy October 25, 1999.
1
Measured with respect to the inverting input.
2
Typical is defined as the mean of the distribution.
3
Measured in voltage follower configuration.
4
Measured with V
IN
= +0.25 V.
Specifications subject to change without notice.
–2–
REV. B
AD9617
AC ELECTRICAL CHARACTERISTICS
Parameter
FREQUENCY DOMAIN
Bandwidth (–3 dB)
Small Signal
Large Signal
Bandwidth Variation vs. A
V
Amplitude of Peaking (<50 MHz)
Conditions
(Unless otherwise noted, A
V
= +3;
V
S
=
5 V; R
F
= 400
; R
LOAD
= 100
)
Units
Test
Temp Level
AD9617JN/JR
AD9617AQ/SQ*
Min Typ Max Min Typ Max
AD9617BQ/TQ*
Min Typ Max
V
OUT
≤
2 V p-p
V
OUT
= 4 V p-p
A
V
= –1 to
±
15
T = T
MIN
to +25°C
T = T
MAX
Amplitude of Peaking (>50 MHz) T = T
MIN
to +25°C
T = T
MAX
Amplitude of Roll-Off (<60 MHz)
Phase Nonlinearity
DC to 75 MHz
2nd Harmonic Distortion
2 V p-p; 4.3 MHz
2 V p-p; 20 MHz
2 V p-p; 60 MHz
3rd Harmonic Distortion
2 V p-p; 4.3 MHz
2 V p-p; 20 MHz
2 V p-p; 60 MHz
Input Noise Voltage
10 MHz
Inverting Input Noise Current
10 MHz
Average Equivalent Integrated
Input Noise Voltage
0.1 MHz to 200 MHz
TIME DOMAIN
Slew Rate
Rise/Fall Time
V
OUT
= 2 V Step
V
OUT
= 4 V Step
V
OUT
= 4 V Step
Overshoot
Settling Time
To 0.1%
To 0.02%
To 0.1%
To 0.02%
2× Overdrive Recovery to
±
2 mV of Final Value
Propagation Delay
Differential Gain
1
Differential Phase
1
V
OUT
= 4 V Step
Full
Full
+25°C
←
←
←
←
Full
+25°C
Full
Full
Full
Full
Full
Full
+25°C
+25°C
II
IV
V
II
II
II
II
II
V
IV
IV
II
IV
IV
II
V
V
135
190
150
40
0
0
0
0
0.1
0.5
–86
–67
–51
–83
–69
–54
1.2
29
55
1400
2.0
2.4
2.4
3
10
14
11
16
50
2
<0. 01
0.01
145
115
–78
–59
–43
–75
–61
–46
190
150
40
0
0
0
0
0.1
0.5
–86
–67
–51
–83
–69
–54
1.2
29
55
145
115
0.3
0.6
0.8
1.0
0.6
–78
–59
–43
–75
–61
–46
190
150
40
0
0
0
0
0.1
0.5
–86
–67
–51
–83
–69
–54
1.2
29
55
0.3
0.6
0.8
1.0
0.6
–78
–59
–43
–75
–61
–46
MHz
MHz
MHz
dB
dB
dB
dB
dB
Degree
dBc
dBc
dBc
dBc
dBc
dBc
nV/√Hz
pA/√Hz
µV,
rms
V/µs
+25°C V
Full
Full
←
←
Full
Full
Full
Full
Full
+25°C
+25°C
Full
Full
IV
IV
IV
IV
IV
IV
IV
IV
IV
V
V
V
V
1100 1400
2.0
2.4
2.4
3
10
14
11
16
50
2
<0. 01
0.01
2.5
3.3
3.5
14
15
23
16
24
1100
1400
2.0
2.4
2.4
3
10
14
11
16
50
2
<0 .01
0.01
2.5
3.3
3.5
14
15
23
16
24
T = +25°C to T
MAX
T = T
MIN
V
OUT
= 2 V Step
V
OUT
= 2 V Step
V
OUT
= 2 V Step
V
OUT
= 4 V Step
V
OUT
= 4 V Step
V
IN
= 1.7 V Step
ns
ns
ns
%
ns
ns
ns
ns
ns
ns
%
Degree
POWER SUPPLY REQUIREMENTS
Quiescent Current
+I
S
–I
S
NOTES
*Pending obsoletion: last-time buy October 25, 1999.
1
Frequency = 4.3 MHz; R
L
= 150
Ω;
A
V
= +3.
Specifications subject to change without notice.
Full
Full
II
II
34
34
48
48
34
34
48
48
34
34
48
48
mA
mA
REV. B
–3–
AD9617
EXPLANATION OF TEST LEVELS
Test Level
DIE CONNECTIONS
+V
S
I - 100% production tested.
II - 100% production tested at +25°C and sample tested at
specified temperatures. AC testing of J grade devices done
on sample basis.
III - Sample tested only.
IV - Parameter is guaranteed by design and characterization
testing.
V - Parameter is a typical value only.
VI - All devices are 100% production tested at +25°C. 100%
production tested at temperature extremes for extended
temperature devices; sample tested at temperature ex-
tremes for commercial/industrial devices.
+V
S
–INPUT
TOP VIEW
(Not to Scale)
OUTPUT
+INPUT
–V
S
DIE SIZE = 53
67
–V
S
15 mils
ORDERING GUIDE
Model
AD9617JN
AD9617JR
AD9617JR-REEL
Temperature
Range
0°C to +70°C
0°C to +70°C
0°C to +70°C
Package
Description
Plastic DIP
SOIC
13" Tape and Reel
Package
Option
N-8
SO-8
SO-8
–4–
REV. B
AD9617
Typical Performance Characteristics
(A = +3;
V
3
2
1
0
A
V
= +5
A
V
= +1
180
135
V
S
=
5 V; R
F
= 400 V, unless otherwise noted)
10
15
PHASE – Degrees
90
45
0
–45
–90
–135
–180
20
25
30
MAGNITUDE – dB
–1
–2
–3
–4
–5
–6
–7
A
V
= +20
0
40
80
120
FREQUENCY – MHz
160
dB
35
40
45
50
55
PSRR
CMRR
200
60
100
1k
10k
100k
1M
FREQUENCY – Hz
10M
100M
Figure 1. Noninverting Frequency Response
Figure 4. CMRR and PSRR
3
2
1
A
V
= –1
MAGNITUDE – dB
0
–1
–2
–3
–4
–5
A
V
= –20
–6
–7
0
40
80
120
160
A
V
= –5
180
135
SETTLING PERCENTAGE – %
0.1
0.08
TEST CIRCUIT
100
6pF
PHASE – Degrees
90
45
0
–45
–90
0.06
0.04
0.02
0
–0.02
–0.04
–135
–180
V
OUT
= 4V STEP
–0.06
–0.08
200
–0.1
0
8
16
TIME – s
24
32
40
FREQUENCY – MHz
Figure 2. Inverting Frequency Response
Figure 5. Settling Time
120
GAIN
105
90
75
PHASE
60
45
30
15
0
10k
TEST CIRCUIT
0
30
60
90
120
150
180
210
240
100k
1M
10M
FREQUENCY – Hz
100M
1G
SETTLING PERCENTAGE – %
RELATIVE PHASE – Degrees
0.1
0.08
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
V
OUT
= 4V STEP
–0.08
–0.1
0
2
4
TIME – s
6
8
10
TEST CIRCUIT
100
6pF
GAIN – dB
100
Figure 3. Open Loop Transimpedance Gain
[T(s)
Relative to 1
Ω]
Figure 6. Long Term Settling Time
REV. B
–5–
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