1
Semiconductor
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-800-4-HARRIS or 407-727-9207 | Copyright
Harris Corporation 1999
HA-5004
100MHz Current Feedback Amplifier
The HA-5004 current feedback amplifier is a video/wideband
amplifier optimized for low gain applications. The design is
based on current-mode feedback which allows the amplifier
to achieve higher closed loop bandwidth than voltage-mode
feedback operational amplifiers. Since feedback is
employed, the HA-5004 can offer better gain accuracy and
lower distortion than open loop buffers. Unlike conventional
op amps, the bandwidth and rise time of the HA-5004 are
nearly independent of closed loop gain. The 100MHz
bandwidth at unity gain reduces to only 65MHz at a gain of
10. The HA-5004 may be used in place of a conventional op
amp with a significant improvement in speed power product.
Several features have been designed in for added value. A
thermal overload feature protects the part against excessive
junction temperature by shutting down the output. If this
feature is not needed, it can be inhibited via a TTL input
(TOI). A TTL chip enable/disable (OE) is also provided; when
the chip is disabled its output is high impedance. Finally, an
open collector output flag (TOL) is provided to indicate the
status of the chip. The status flag goes low to indicate when
the chip is disabled due to either the internal Thermal
Overload shutdown or the external disable.
In order to maximize bandwidth and output drive capacity,
internal current limiting is not provided. However, current
limiting may be applied via the V
C
+ and V
C
- pins which
provide power separately to the output stage.
For Military grade product refer to the HA-5004/883 data
sheet.
Pinout
HA-5004
(CERDIP)
TOP VIEW
Features
Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200V/
s
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . .
100mA
Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9V into 100
V
SUPPLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5V to
18V
Thermal Overload Protection and Output Flag
Bandwidth Nearly Independent of Gain
Output Enable/Disable
Applications
Unity Gain Video/Wideband Buffer
Video Gain Block
High Speed Peak Detector
Fiber Optic Transmitters
Zero Insertion Loss Transmission Line Drivers
Current to Voltage Converter
Radar Systems
OUT
TOI
OE
V
C+
V
CC
+BAL
-IN
+IN
TOL
GND
N/C
V
C-
V
EE
1
2
3
4
5
6
7
14
13
12
11
10
9
8
+
-BAL
-
Part Number Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG. NO.
HA1-5004-5
0 to 70
14 Ld CERDIP
F14.3
TRUTH TABLE
INPUTS
TEMP
TOL OUTPUT
(OPEN
COLLECTOR)
OPERATION
OE
TOI
T
J
0
0
Normal
1
Normal
0
0
High
(Note)
0
Auto Shutdown,
HI-Z OUT
0
1
X
1
Normal
1
X
X
0
Manual Shutdown,
HI-Z OUT
NOTE:
>180
o
C Typical
January 1999
File Number
2923.4
OBSOLETE PR
ODUCT
NO RECOMMENDED REPLA
CEMENT
Call Central Applications 1-800-442-7747
or email: centapp@harris.com
2
Absolute Maximum Ratings
Thermal Information
Supply Voltage (Between V+ and V- Terminals) . . . . . . . . . . . . 40V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
DC Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
SUPPLY
Output Current . . . . . . . . . . . . . . .
120mA Max (
25% Duty Cycle)
Operating Conditions
Temperature Range
HA-5004-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to 75
o
C
Thermal Resistance (Typical, Note 2)
JA
(
o
C/W)
JC
(
o
C/W)
CERDIP Package . . . . . . . . . . . . . . . . .
75
20
Maximum Junction Temperature (Note 1) . . . . . . . . . . . . . . . 175
o
C
Maximum Storage Temperature Range . . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
o
C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Maximum power dissipation, including load condition, must be designed to maintain the junction temperature below 175
o
C. See Thermal Resis-
tances in the "Thermal Information" section.
2.
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
V
CC
= V
C+
= +15V, V
EE
= V
C-
= -15V, R
S
= 50
, R
L
= 100
, A
V
= +1, R
F
= 250
, OE = 0.8V, TOI = 0.8V or
2.0V, Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
TEMP. (
o
C)
MIN
TYP
MAX
UNITS
INPUT CHARACTERISTICS
Offset Voltage
25
-
1
5
mV
Full
-
-
20
mV
Average Offset Voltage Drift
Full
-
10
-
V/
o
C
Bias Current (+Input Only) (Note 3)
25
-
2
5
A
Full
-
-
20
A
Input Resistance (-Input)
25
-
6.5
-
Input Resistance (+Input)
25
-
3
-
M
Input Capacitance
25
-
3
-
pF
Common Mode Range
Full
10
-
-
V
DISTORTION AND NOISE
Total Harmonic Distortion (2V
P-P
,
200kHz)
A
VCL
= +1
25
-
-72
-
dBc
A
VCL
= +2
25
-
-70
-
dBc
A
VCL
= +5
25
-
-68
-
dBc
Input Noise Voltage
10Hz to 1MHz
25
-
15
-
V
P-P
Input Noise Voltage Density (Note 4)
f = 10kHz
25
-
2.2
-
nV/
Hz
f = 100kHz
25
-
2.2
-
nV/
Hz
Input Noise Current Density (Note 4)
f = 10kHz
25
-
6
-
pA/
Hz
f = 100kHz
25
-
4
-
pA/
Hz
DIGITAL I/O CHARACTERISTICS
Logic Inputs (OE and TO)
V
IH
Full
2.0
-
-
V
V
IL
Full
-
-
0.8
V
I
IH
at V
I
= 2.4V
Full
-
-
1
A
I
IH
at V
I
= 0.4V
Full
-
-
10
A
Logic Output (TOL) (Open Collector)
V
OL
at 800
A
Full
-
0.05
0.4
V
HA-5004
3
TRANSFER CHARACTERISTICS
DC Gain Error (Note 5)
Small Signal
(
100mV)
25
-
0.25
0.43
%
Full
-
0.25
0.75
%
Large Signal (
10V)
(R
L
= 1k
)
25
-
0.25
0.43
%
Full
-
0.25
0.75
%
DC Voltage Gain
Small and Large Signal
25
233
400
-
V/V
Full
133
400
-
V/V
DC Transimpedance (Note 6)
25
-
100
-
V/mA
Full
33
100
-
V/mA
-3dB Bandwidth (Note 7)
A
V
= +1
25
-
100
-
MHz
Gain Flatness
DC to 5MHz
25
-
0.03
-
dB
DC to 10MHz
25
-
0.05
-
dB
Differential Gain (Notes 7, 8, 9, 3.58MHz) A
VCL
= +1
25
-
0.035
-
%
A
VCL
= +2
25
-
0.058
-
%
Differential Gain (Notes 7, 8, 9, 4.43MHz) A
VCL
= +1
25
-
0.035
-
%
A
VCL
= +2
25
-
0.058
-
%
Differential Phase (Notes 7, 8, 3.58MHz)
A
VCL
= +1
25
-
0.15
-
Degrees
A
VCL
= +2
25
-
0.23
-
Degrees
Differential Phase (Notes 7, 8, 4.43MHz)
A
VCL
= +1
25
-
0.17
-
Degrees
A
VCL
= +2
25
-
0.24
-
Degrees
Common Mode Rejection Ratio
V
CM
=
10V
Full
-
58
-
dB
Minimum Stable Gain
Full
1
-
-
V/V
OUTPUT CHARACTERISTICS
Output Voltage Swing
R
L
= 100
25
9.0
9.5
-
V
R
L
= 1k
25
11.5
11.8
-
V
R
L
= 100
Full
8.0
9.5
-
V
R
L
= 1k
Full
10.5
11.8
-
V
Full Power Bandwidth
A
V
= +1, V
OUT
= 4V
P-P
25
-
50
-
MHz
Output Resistance, Open Loop
25
-
5
-
Output Current
25
90
100
-
mA
Full
80
100
-
mA
Output Enable Time
HI-Z to
2V
Full
-
100
-
ns
Output Disable Time
2V to HI-Z
Full
-
3
-
s
Output Leakage
Disabled
Full
-
-
1
A
TRANSIENT RESPONSE
Rise Time/Fall Time
200mV Step
25
-
6.3
-
ns
Propagation Delay
10V Step
25
-
7
-
ns
Slew Rate
10V Step
25
-
1200
-
V/
s
Settling Time
0.1%, 10V Step
25
-
50
-
ns
Overshoot
25
-
10
-
%
POWER SUPPLY CHARACTERISTICS
Supply Current
Enabled
25
-
12
16
mA
Full
-
-
22
mA
Disabled
25
-
7
-
mA
Electrical Specifications
V
CC
= V
C+
= +15V, V
EE
= V
C-
= -15V, R
S
= 50
, R
L
= 100
, A
V
= +1, R
F
= 250
, OE = 0.8V, TOI = 0.8V or
2.0V, Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
TEMP. (
o
C)
MIN
TYP
MAX
UNITS
HA-5004
4
Power Supply Rejection Ratio
Full
50
60
-
dB
NOTES:
3. The inverting input is a low impedance point; Bias Current and Offset Current, are not specified for this terminal.
4. See typical performance curves.
5.
.
6.
.
7. V
IN
= 300mV
P-P.
8. V
OFFSET
= 1.0V.
9. Differential Gain (dB) = 0.0869 Differential Gain (%).
Test Circuits and Waveforms
LARGE SIGNAL RESPONSE, A
V
= +1
FIGURE 1. TEST CIRCUIT
PROPAGATION DELAY
SMALL SIGNAL RESPONSE
Electrical Specifications
V
CC
= V
C+
= +15V, V
EE
= V
C-
= -15V, R
S
= 50
, R
L
= 100
, A
V
= +1, R
F
= 250
, OE = 0.8V, TOI = 0.8V or
2.0V, Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
TEMP. (
o
C)
MIN
TYP
MAX
UNITS
Gain Error
1
DC Voltage Gain
---------------------------------------------
100%
=
DC Transimpedance
R
F
Gain Error
---------------------------
, R
F
250
=
=
A
V
= +1, V
SUPPLY
=
15V
INPUT
OUTPUT
Vertical Scale: 5V/Div.; Horizontal Scale: 20ns/Div.
249
V
IN
V
OUT
+
-
A
V
= +1, V
SUPPLY
=
15V
INPUT
OUTPUT
Vertical Scale: 2V/Div.; Horizontal Scale: 20ns/Div.
INPUT
OUTPUT
A
V
= +1, V
SUPPLY
=
15V
Vertical Scale: 100mV/Div.; Horizontal Scale: 20ns/Div.
HA-5004
5
Sc
hematic Dia
gram
TO
I
R
T17
R
T7
Q
PT7
Q
PT1
Q
PT6
Q
PT5
R
T20
R
T4
R
T5
R
T16
R
T9
R
T8
R
T13
R
T15
R
T12
R
25
R
23
R
30
R
29
R
24A
R
24B
R
31
R
3
R
26
R
4
R
32
R
5
R
XU2
Q
P5
Q
P4
Q
P3
Q
N30
Q
P24
Q
P1
Q
N2
D
D2
D
D1
Q
P
Q
P32
Q
N26
Q
N25
Q
P22
Q
P23
Q
N20
Q
N21
Q
N
Q
P28
Q
N32
Q
N31
Q
N24
Q
N3
Q
N4
D
D3
D
D4
R
20
R
21
Q
P25
Q
N22
R
XU9
D
Z1
R
T10
Q
NT9
Q
PT12
Q
PT13
Q
PT18
Q
NT11
Q
NT10
Q
PT14
R
T14
R
28
Q
N1
D
D8
D
D6
Q
P30
R
22A
R
22B
R
6
R
27
R
7
R
8
C
C1
Q
P2
Q
P6
R
35
R
37
Q
N7
Q
P7
Q
N6A
Q
N6B
R
34B
R
34A
D
D7
D
D8
R
36B
R
36A
Q
N5
FB
V
EE
V
C-
V
C+
V
CC
OUT
B
AL 2
B
AL1
IN
GND
Q
PT15
R
T18
Q
NT12
Q
PT10
OE
T
OL
Q
PT3
Q
PT17
Q
PT11
Q
PT4
Q
NT4
R
T6
R
T19
Q
PT9
Q
PT6
Q
NT7
Q
NT8
D
ZT1
D
ZT2
Q
NT3
Q
NT2
Q
NT5
R
T1
R
T1
Q
PT2
23
31
Q
NT6
HA-5004
6
Application Information
Theory Of Operation
The HA-5004 is a high performance amplifier that uses
current feedback to achieve its outstanding performance.
Although it is externally configured like an ordinary op amp
in most applications, its internal operation is significantly
different.
Inside the HA-5004, there is a unity gain buffer from the non-
inverting (+) input to the inverting-input (as suggested by the
circuit symbol), and the inverting terminal is a low
impedance point. Error currents are sensed at the inverting
input and amplified; a small change in input current
produces a large change in output voltage. The ratio of
output voltage delta due to input current delta is the
transimpedance of the device.
Steady state current at the inverting input is very small
because the transimpedance is large. The voltage across
the input terminals is nearly zero due to the buffer amplifier.
These two properties are similar to standard op amps and
likewise simplify circuit analysis.
Resistor Selection
The HA-5004 is optimized for a feedback resistor of 250
,
regardless of gain configuration. It is important to note that
this resistor is required even for unity gain applications;
higher gain settings use a second resistor like regular op
amp circuits as shown in Figure 2 below.
Power Supplies
The HA-5004 will operate over a wide range of supply
voltages with excellent performance. Supplies may be either
single-ended or split, ranging from 6V (
3V) to 36V (
18V).
Appropriate reduction in input and output signal excursion is
necessary for operation at lower supply voltages. Bypass
capacitors from each supply to ground are recommended,
typically a 0.01
F ceramic in parallel with a 4.7
F
electrolytic.
Current Limit
No internal current limiting is provided for the HA-5004 in
order to maximize bandwidth and slew rate. However, power
is supplied separately to the output stage via pins 1 (V
C
+)
and 14 (V
C
-) so that external current limiting resistors may
be used. If required, 100
resistors to each supply rail are
recommended.
Enable/Disable and Thermal
Overload Operation
The HA-5004 operates normally with a TTL low state on pin
7 (OE) but it may be disabled manually by a TTL high state
at this input. When disabled, the output and inverting-input
go to a high impedance state and the circuit is electrically
debiased, reducing supply current by about 5mA. It is
important to keep the differential input voltage below the
absolute maximum rating of 5V when the device is disabled.
If the power dissipation becomes excessive and chip
temperature exceeds approximately 180
o
C, the HA-5004 will
automatically disable itself. The thermal overload condition
will be indicated by a low state at the TOL output on pin 10.
(TOL is also low for manual shutdown via pin 7). Automatic
thermal shutdown can be bypassed by a TTL high state on
Thermal Overload Inhibit (TOI) pin 6. See the truth table for a
summary of operation.
Offset Adjustment
Offset voltage may be nulled with a 5k
potentiometer
between pins 3 and 4, center tapped to the positive supply.
Setting the slider towards pin 3 (+BAL) increases output
voltage; towards pin 4 (-BAL) decreases output voltage.
Offset can be adjusted by about
10mV with a 5K pot; this
range is extended with a lower resistance potentiometer.
14
13
12
11
10
9
8
1
2
3
4
5
6
7
BAL
+
V
OUT
R
F
+5V
-15V
+15V
V
IN
NC
TOI
V
CC
GND
V
EE
V
C-
V
C+
OE
THERMAL OVERLOAD
TOL
10k
5k
100
100
249
249
+
-
-
FIGURE 2. TYPICAL APPLICATION CIRCUIT, A
V
= +2
HA-5004
7
Typical Performance Curves
V
SUPPLY
=
15V, T
A
= 25
o
C, Unless Otherwise Specified
FIGURE 3. GAIN AND PHASE vs FREQUENCY
FIGURE 4. FREQUENCY RESPONSE vs SUPPLY VOLTAGE
FIGURE 5. FREQUENCY RESPONSE vs C
L
FIGURE 6. MAXIMUM UNDISTORTED SINEWAVE
OUTPUT vs FREQUENCY
FIGURE 7. CLOSED LOOP OUTPUT IMPEDANCE vs
FREQUENCY
FIGURE 8. SUPPLY CURRENT vs SUPPLY VOLTAGE
GAIN (dB)
15
12
9
6
3
0
A
V
= +5
A
V
= +2
A
V
= +1
A
V
= +1
A
V
= +2
A
V
= +5
0
45
90
135
180
PHASE
PHASE (DEGREES)
1
10
100
FREQUENCY (MHz)
0
-1
-2
-3
-4
-5
-6
1
10
FREQUENCY (MHz)
GAIN (dB)
100
INPUT = 300mV
P-P
3.5V
5V
10V
15V
A
V
= 1
GAIN (dB)
12
9
6
3
0
100pF
50pF
10pF
0.0pF
1
10
100
FREQUENCY (MHz)
V
CC
=
15V, A
V
= +2
R
L
= 1k
, Input = 10mV
40
35
30
25
20
15
10
5
0
V
OUT
(V
P-P
)
1K
10K
FREQUENCY (Hz)
100K
1M
10M
V
CC
=
15V, A
V
= +1
SINEWAVE INPUT
10.0
1.0
0.1
0.01
IMPED
ANCE (
)
1K
100K
1M
10M
FREQUENCY (Hz)
SUPPL
Y CURRENT (mA)
12
8
4
0
0
SUPPLY VOLTAGE (
V)
2
4
6
8
10
12
14
16
18
16
20
HA-5004
8
Die Characteristics
DIE DIMENSIONS:
63 mils x 93 mils x 19 mils
1600
m x 2370
m x 483
m
METALLIZATION:
Type: Al, 1% Cu
Thickness: 16k
2k
PASSIVATION:
Type: Nitride (Si
3
N
4
) over (Silox, 5% Phos.)
Silox Thickness: 12k
2k
Nitride Thickness: 3.5k
1.5k
SUBSTRATE POTENTIAL (Powered Up):
V
EE
TRANSISTOR COUNT:
64
PROCESS:
Bipolar Dielectric Isolation
Metallization Mask Layout
HA-5004
FIGURE 9. NOISE VOLTAGE vs FREQUENCY
FIGURE 10. NOISE CURRENT vs FREQUENCY
Typical Performance Curves
V
SUPPLY
=
15V, T
A
= 25
o
C, Unless Otherwise Specified (Continued)
8
7
6
5
4
3
2
1
0
10
100
1K
10K
100K
e
N
(nV/
Hz)
FREQUENCY (Hz)
V
CC
=
15V
55
50
45
40
35
30
25
20
15
10
5
0
10
100
1K
10K
100K
i
N
(pA/
Hz)
FREQUENCY (Hz)
V
CC
=
15V
OUT
VC+
VC-
V-
FB
IN
TOL
GND
OE
TOI
V+
-BAL
+BAL
HA-5004
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