Analog Devices AD9617 Datasheet
Low Distortion, Precision,
a
FEATURES
Usable Closed-Loop Gain Range: 61 to 640
Low Distortion: –67 dBc (2nd) at 20 MHz
Small Signal Bandwidth: 190 MHz (A
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
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.
= +3)
V
Wide Bandwidth Op Amp
AD9617
PIN CONFIGURATION
AD9617
1
NC
2
–INPUT
3
+INPUT
4
–V
S
NC = NO CONNECT
*
OPTIONAL +VS **OPTIONAL –V
NOTE:
FOR BEST SETTLING TIME AND DISTORTION
PERFORMANCE, USE OPTIONAL SUPPLY
CONNECTIONS. PERFORMANCE INDICATED
IN SPECIFICATIONS IS BASED ON SUPPLY
CONNECTIONS TO THESE PINS.
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).
8
*
7
+V
OUTPUT
6
5
**
S
S
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
Supply Voltages (±V
) . . . . . . . . . . . . . . . . . . . . . . . . . . . +7 V
S
1
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
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
θ
= 40°C/W.
JC
= 140°C/W; θJC = 30°C/W. SOIC Package: θJA = 155°C/W;
JA
AD9617JN/JR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Lead Soldering Temperature (10 Seconds) . . . . . . . . . +300°C
DC ELECTRICAL CHARACTERISTICS
Parameter Conditions Temp Level Min Typ Max Min Typ Max Min Typ Max Units
Input Offset Voltage
Input Offset Voltage TC
Input Bias Current
Inverting +25°C I –50 0 +50 –50 0 +50 –25 0 +25 µA
Noninverting +25°C I –25 +5 +35 –25 +5 +35 –15 +5 +20 µA
Input Bias Current TC
Noninverting Full IV –50 +30 +125 –50 +30 +125 –50 +30 +125 nA/°C
Inverting Full IV –50 +50 +150 –50 +50 +150 –50 +50 +150 nA/°C
Input Resistance
Noninverting +25°C V 60 60 60 kΩ
Input Capacitance
Noninverting +25°C V 1.5 1.5 1.5 pF
Common-Mode Input Range
Common-Mode Rejection Ratio
Power Supply Rejection Ratio ∆V
Open Loop Gain
T
O
Nonlinearity At DC +25°C IV 10 10 10 ppm
Output Voltage Range +25°CII ±3.4 ± 3.8 ±3.4 ± 3.8 ±3.4 +3.8 V
Output Impedance At DC +25°C V 0.07 0.07 0.07 Ω
Output Current (50 Ω Load) T = +25°C to T
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 VIN = +0.25 V.
Specifications subject to change without notice.
1, 2
2
2
2
3
T = T
MAX
4
T = T
T = T
T = T
to +25°C ← II ±1.7 ±1.8 ±1.7 ±1.8 ±1.7 ±1.8 V
MIN
to T
MIN
MAX
to +25°C ← II 48 51 48 51 48 51 dB
MIN
= ±5% Full II 48 51 48 51 48 51 dB
S
At DC +25°C V 500 500 500 kΩ
T = T
MIN
(Unless otherwise noted, AV = +3; 6VS = 65 V; RF = 400 V; R
= 100 V)
LOAD
Test AD9617JN/JR AD9617AQ/SQ* AD9617BQ/TQ*
+25°C I –1.1 +0.5 +2.2 –1.1 +0.5 +2.2 +0.0 +0.5 +1.35 mV
Full IV –4 +3 +25 –4 +3 +25 –4 +3 +25 µV/°C
← II ±1.4 ±1.5 ±1.4 ±1.5 ±1.4 ±1.5 V
← II 44 48 44 48 44 48 dB
← II 60 60 60 mA
MAX
← II 50 50 50 mA
–2–
REV. B
AD9617
AC ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, AV = +3; 6VS = 65 V; RF = 400 V; R
= 100 V)
LOAD
Test AD9617JN/JR AD9617AQ/SQ* AD9617BQ/TQ*
Parameter Conditions Temp Level Min Typ Max Min Typ Max Min Typ Max Units
FREQUENCY DOMAIN
Bandwidth (–3 dB)
Small Signal V
Large Signal V
Bandwidth Variation vs. A
V
Amplitude of Peaking (<50 MHz) T = T
Amplitude of Peaking (>50 MHz) T = T
≤ 2 V p-p Full II 135 190 145 190 145 190 MHz
OUT
= 4 V p-p Full IV 150 115 150 115 150 MHz
OUT
A
= –1 to ±15 +25°C V 40 40 40 MHz
V
to +25°C ← II 0 0 0.3 0 0.3 dB
T = T
T = T
MIN
MAX
to +25°C ← II 0 0 0.8 0 0.8 dB
MIN
MAX
← II 0 0 0.6 0 0.6 dB
← II 0 0 1.0 0 1.0 dB
Amplitude of Roll-Off (<60 MHz) Full II 0.1 0.1 0.6 0.1 0.6 dB
Phase Nonlinearity DC to 75 MHz +25°C V 0.5 0.5 0.5 Degree
2nd Harmonic Distortion 2 V p-p; 4.3 MHz Full IV –86 –78 –86 –78 –86 –78 dBc
2 V p-p; 20 MHz Full IV –67 –59 –67 –59 –67 –59 dBc
2 V p-p; 60 MHz Full II –51 –43 –51 –43 –51 –43 dBc
3rd Harmonic Distortion 2 V p-p; 4.3 MHz Full IV –83 –75 –83 –75 –83 –75 dBc
2 V p-p; 20 MHz Full IV –69 –61 –69 –61 –69 –61 dBc
2 V p-p; 60 MHz Full II –54 –46 –54 –46 –54 –46 dBc
Input Noise Voltage 10 MHz +25°C V 1.2 1.2 1.2 nV/√Hz
Inverting Input Noise Current 10 MHz +25°C V 29 29 29 pA/√Hz
Average Equivalent Integrated
Input Noise Voltage 0.1 MHz to 200 MHz +25°C V 55 55 55 µV, rms
TIME DOMAIN
Slew Rate V
= 4 V Step Full IV 1400 1100 1400 1100 1400 V/µs
OUT
Rise/Fall Time
= 2 V Step Full IV 2.0 2.0 2.5 2.0 2.5 ns
V
OUT
= 4 V Step T = +25°C to T
V
OUT
V
= 4 V Step T = T
OUT
Overshoot V
MIN
= 2 V Step Full IV 3 3 14 3 14 %
OUT
← IV 2.4 2.4 3.3 2.4 3.3 ns
MAX
← IV 2.4 2.4 3.5 2.4 3.5 ns
Settling Time
To 0.1% V
To 0.02% V
To 0.1% V
To 0.02% V
= 2 V Step Full IV 10 10 15 10 15 ns
OUT
= 2 V Step Full IV 14 14 23 14 23 ns
OUT
= 4 V Step Full IV 11 11 16 11 16 ns
OUT
= 4 V Step Full IV 16 16 24 16 24 ns
OUT
2× Overdrive Recovery to
±2 mV of Final Value V
Propagation Delay +25°CV 2 2 2 ns
Differential Gain
Differential Phase
1
1
= 1.7 V Step +25°C V 50 50 50 ns
IN
Full V <0. 01 <0. 01 <0 .01 %
Full V 0.01 0.01 0.01 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
Specifications subject to change without notice.
= 150 Ω; A
L
= +3.
V
Full II 34 48 34 48 34 48 mA
Full II 34 48 34 48 34 48 mA
REV. B
–3–
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