HA2557/883 [INTERSIL]
Wideband Four Quadrant Analog Multiplier (Current Output); 宽带四象限模拟乘法器（电流输出）
| 型号： | HA2557/883 |
| 厂家： | 
Intersil |
| 描述： | Wideband Four Quadrant Analog Multiplier (Current Output) |
| 文件： | 总14页 (文件大小：433K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HA2557/883
Wideband Four Quadrant Analog
Multiplier (Current Output)
July 1994
Features
Description
• This Circuit is Processed in Accordance to MIL-STD- The HA-2557/883 is a monolithic, high speed, four quadrant,
883 and is Fully Conformant Under the Provisions of analog multiplier constructed in Intersil’ Dielectrically Iso-
Paragraph 1.2.1.
lated High Frequency Process. The single-ended current
output of the HA-2557/883 has a 130MHz signal bandwidth
(RL = 50Ω). High bandwidth and low distortion make this part
an ideal component in video systems.
• Low Multiplication Error . . . . . . . . . . . . . . . . 1.5% (Typ)
• Input Bias Currents . . . . . . . . . . . . . . . . . . . . . 8µA (Typ)
• Signal Input Feedthrough at 5MHz. . . . . . . -52dB (Typ)
• Wide Y Channel Bandwidth . . . . . . . . . . 130MHz (Typ)
• Wide X Channel Bandwidth . . . . . . . . . . . 75MHz (Typ)
• Rise Time (RL = 50Ω) . . . . . . . . . . . . . . . . . . . . 7ns (Typ)
• Supply Current. . . . . . . . . . . . . . . . . . . . . . . 17mA (Max)
The suitability for precision video applications is demon-
strated further by low multiplication error (1.5%), low
feedthrough (-52dB), and differential inputs with low bias cur-
rents (8µA). The HA-2557/883 is also well suited for mixer
circuits as well as AGC applications for sonar, radar, and
medical imaging equipment.
The current output of the HA-2557/883 allows it to achieve
higher bandwidths than voltage output multipliers. Full scale out-
put current is trimmed to 1.6mA. An internal 2500Ω feedback
resistor is also provided to accurately convert the current, if
desired, to a full scale output voltage of ±4V. The HA-2557/883 is
not limited to multiplication applications only; frequency doubling,
power detection, as well as many other configurations are also
possible.
Applications
• Military Avionics
• Missile Guidance Systems
• Medical Imaging Displays
• Video Mixers
• Sonar AGC Processors
• Radar Signal Conditioning
• Voltage Controlled Amplifier
• Vector Generator
Ordering Information
TEMPERATURE
PART NUMBER
RANGE
PACKAGE
o
o
HA1-2557/883
-55 C to +125 C 16 Lead CerDIP
Schematic
Pinout
V+
HA-2557/883
(CERDIP)
TOP VIEW
VBIAS
16
VXIOA
GND
VREF
1
2
3
4
5
6
7
8
REF
15 VXIO
14 NC
13 VX+
12 VX-
11 V+
10 RZ
B
VBIAS
VYIOB
IOUT
VYIO
A
X
VX-
VX+
VY+
VY-
V-
Y
X
VY+
YY-
RZ
REF
+
-
9
NC
IOUT
VYIO
A
VYIOB
GND
VXIO
B
VXIO
A
V-
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Spec Number 511064-883
File Number 3638
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
8-12
Specifications HA2557/883
Absolute Maximum Ratings
Thermal Information
Voltage Between V+ and V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3mA
ESD Rating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .< 2000V
Thermal Resistance
CerDIP Package . . . . . . . . . . . . . . . . . . . . 82 C/W
Maximum Package Power Dissipation at +75 C
CerDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.22W
Package Power Dissipation Derating Factor above +75 C
CerDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12mW/ C
θ
θ
JC
27 C/W
JA
o
o
o
o
o
Lead Temperature (Soldering 10s). . . . . . . . . . . . . . . . . . . . +300 C
o
o
o
Storage Temperature Range . . . . . . . . . . . . . .-65 C ≤ T ≤ +150 C
A
o
Max Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . +175 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.
Operating Conditions
o
o
Operating Supply Voltage (±V ) . . . . . . . . . . . . . . . . . . . . . . . . . . ±15V
Operating Temperature Range . . . . . . . . . . . . -55 C ≤ T ≤ +125 C
A
S
TABLE 1. DC ELECTRICAL PERFORMANCE CHARACTERISTICS
Device Tested at: V
= ±15V, R (Pin 10) not connected, Unless Otherwise Specified.
SUPPLY
Z
LIMITS
GROUP A
PARAMETERS
SYMBOL
CONDITIONS
V , V = ±4V
SUBGROUPS
TEMPERATURE
MIN
MAX
3
UNITS
%FS
%FS
%FS
%
o
Multiplication Error
ME
1
2, 3
1
+25 C
-3
-6
Y
X
FS = 1.6mA
o
o
+125 C, -55 C
6
o
Linearity Error
LE
V , V = ±4V
+25 C
-0.25
-3
0.25
3
Y
X
o
R Accuracy
RZE
Nominal 2500Ω
1
+25 C
Z
o
o
2, 3
1
+125 C, -55 C
-5
5
%
o
I
Offset
I
V , V = 0V
+25 C
-10
-15
-15
-25
-15
-25
-2
10
15
15
25
15
25
2
µA
OUT
OO
X
Y
X
X
Y
o
o
2, 3
1
+125 C, -55 C
µA
o
Input Offset Voltage (V )
V
V
V
V
= ±4V
+25 C
mV
mV
µA
X
XIO
o
o
2, 3
1
+125 C, -55 C
o
Input Bias Current (V )
I (V )
= 0V, V = 4V
+25 C
X
B
X
Y
o
o
2, 3
1
+125 C, -55 C
µA
o
Input Offset Current (V )
I
(V )
= 0V, V = 4V
+25 C
µA
X
IO
X
Y
o
o
2, 3
1
+125 C, -55 C
-3
3
µA
o
Common Mode (V )
Rejection Ratio
CMRR(V ) V CM = ±10V
+25 C
65
65
65
65
45
45
-15
-25
-15
-25
-2
-
dB
X
X
X
Y
V
= 4V
o
o
2, 3
1
+125 C, -55 C
-
dB
o
Power Supply (V )
+ PSRR(V ) V+ = +12V to +17V
+25 C
-
dB
X
X
Rejection Ratio
V = 4V
Y
o
o
2, 3
1
+125 C, -55 C
-
dB
o
- PSRR(V ) V- = -12V to -17V
+25 C
-
dB
X
V = 4V
o
o
Y
2, 3
1
+125 C, -55 C
-
dB
o
Input Offset Voltage (V )
V
V
V
V
= ±4V
+25 C
15
25
15
25
2
mV
mV
µA
Y
YIO
X
Y
Y
o
o
2, 3
1
+125 C, -55 C
o
Input Bias Current (V )
I (V )
= 0V, V = 4V
+25 C
Y
B
Y
X
o
o
2, 3
1
+125 C, -55 C
µA
o
Input Offset Current (V )
I
(V )
= 0V, V = 4V
+25 C
µA
Y
IO
Y
X
o
o
2, 3
1
+125 C, -55 C
-3
3
µA
o
Common Mode (V )
Rejection Ratio
CMRR(V ) V CM = +9V, -10V
+25 C
65
65
65
65
45
45
-
-
dB
Y
Y
Y
X
V
= 4V
o
o
2, 3
1
+125 C, -55 C
-
dB
o
Power Supply (V )
+ PSRR(V ) V+ = +12V to +17V
+25 C
-
dB
Y
Y
Rejection Ratio
V = 4V
X
o
o
2, 3
1
+125 C, -55 C
-
dB
o
- PSRR(V ) V- = -12V to -17V
+25 C
-
dB
Y
V = 4V
o
o
X
2, 3
1
+125 C, -55 C
-
dB
o
Supply Current
I
V , V = 0V
+25 C
17
17
-
mA
mA
MΩ
CC
X
Y
o
o
2, 3
1
+125 C, -55 C
-
o
Output Impedance
Z
V
= ±10V
+25 C
1.0
OUT
OUT
Spec Number 511064-883
8-13
HA2557/883
TABLE 2. AC ELECTRICAL PERFORMANCE CHARACTERISTICS
Table 2 Intentionally Left Blank. See AC Specifications in Table 3
TABLE 3. ELECTRICAL PERFORMANCE CHARACTERISTICS
= ±15V, R (Pin 10) not connected, Unless Otherwise Specified.
Device Tested at: V
SUPPLY
Z
LIMITS
PARAMETERS
SYMBOL
CONDITIONS
NOTES
TEMPERATURE
MIN
MAX
UNITS
V , CHARACTERISTICS
Y
o
Bandwidth
BW(V )
-3dB, V = 4V,
1
+25 C
90
-
-
MHz
dB
Y
X
V
≤ 200mV
Y
P-P
o
AC Feedthrough
V
f
V
V
= 5MHz,
= 200mV
= Nulled
1, 2
+25 C
-48
ISO
O
Y
X
P-P
o
Rise and Fall Time
Overshoot
T , T
V
V
= -4V to +4V Step
= 4V,
1
+25 C
-
10
ns
R
F
Y
X
10% to 90% pts
o
+OS, -OS
V
V
= -4V to +4V Step
= 4V
1
1
+25 C
-
10
-
%
Y
X
o
Differential Input
Resistance
R
(V )
V
= ±4V, V = 0V
+25 C
650
kΩ
IN
Y
Y
X
V
CHARACTERISTICS
X
o
Bandwidth
BW(V )
-3dB, V = 4V,
1
+25 C
60
-
-
MHz
dB
X
Y
V
≤ 200mV
X
P-P
o
AC Feedthrough
V
f
V
V
= 5MHz,
= 200mV
= Nulled
1, 2
+25 C
-50
ISO
O
X
Y
P-P
o
Rise and Fall Time
Overshoot
T , T
V
V
= -4V to +4V Step
= 4V, 10% to 90% pts
1
1
1
+25 C
-
-
10
15
-
ns
%
R
F
X
Y
o
+OS, -OS
V
V
= -4V to +4V Step
= 4V
+25 C
X
Y
o
Differential Input
Resistance
R
(V )
V
= ±4V, V = 0V
+25 C
650
kΩ
IN
X
X
Y
NOTE:
1. Parameters listed in Table 3 are controlled via design or process parameters and are not directly tested at final production. These param-
eters are lab characterized upon initial design release, or upon design changes. These parameters are guaranteed by characterization
based upon data from multiple production runs which reflect lot to lot and within lot variation.
2. Offset voltage applied to minimize feedthrough signal.
TABLE 4. ELECTRICAL TEST REQUIREMENTS
MIL-STD-883 TEST REQUIREMENTS
Interim Electrical Parameters (Pre Burn-In)
Final Electrical Test Parameters
Group A Test Requirements
SUBGROUPS (SEE TABLE 1)
-
1 (Note 1), 2, 3
1, 2, 3
Groups C and D Endpoints
1
NOTE:
1. PDA applies to Subgroup 1 only.
Spec Number 511064-883
8-14
HA2557/883
Die Characteristics
DIE DIMENSIONS:
71mils x 100mils x 19mils ± 1mils
METALLIZATION:
Type: Al, 1% Cu
Thickness: 16kÅ ± 2kÅ
GLASSIVATION:
Type: Nitride (Si3N4) over Silox (SiO2, 5% Phos)
Silox Thickness: 12kÅ ± 2kÅ
Nitride Thickness: 3.5kÅ ± 1.5kÅ
TRANSISTOR COUNT: 72
SUBSTRATE POTENTIAL: V-
WORST CASE CURRENT DENSITY:
0.47 x 105A/cm2
Metallization Mask Layout
HA-2557/883
V
B (3)
A (4)
YIO
V
YIO
(13) V +
X
V + (5)
(12) V -
Y
X
V - (6)
Y
(11) V+
Spec Number 511064-883
8-15
HA2557/883
Test Circuits
V
TRANSIENT RESPONSE
Y
Vertical Scale: Top 5V/Div. Bottom: 100mV/Div.
Horizontal Scale: 20ns/Div.
16
15
14
13
12
11
10
9
NC
NC
NC
VX+
1
2
3
4
5
6
7
8
REF
NC
NC
NC
X
VY+
X
Y
+15V
NC
-15V
NC
VOUT
50Ω
FIGURE 1. AC AND TRANSIENT RESPONSE TEST CIRCUIT
Burn-In Circuit
HA-2557/883 CERAMIC DIP
16
15
14
13
12
11
10
9
NC
NC
1
REF
2
3
4
5
6
7
8
NC
NC
NC
VX+
NC
VY+
X
Y
X
+15.5 V
±0.5V
RZ
D2
0.01µF
- 15.5V
±0.5V
0.01µF
D1
NC
IOUT
D1 = D2 = 1N4002 OR EQUIVALENT (PER BOARD)
Spec Number 511064-883
8-16
HA2557/883
Packaging
c1 LEAD FINISH
F16.3 MIL-STD-1835 GDIP1-T16 (D-2, CONFIGURATION A)
16 LEAD DUAL-IN-LINE FRIT-SEAL CERAMIC PACKAGE
INCHES MILLIMETERS
MIN
-D-
E
-A-
-B-
BASE
METAL
(c)
SYMBOL
MAX
0.200
0.026
0.023
0.065
0.045
0.018
0.015
0.840
0.310
MIN
-
MAX
5.08
0.66
0.58
1.65
1.14
0.46
0.38
21.34
7.87
NOTES
b1
A
b
-
-
2
3
-
M
M
0.014
0.014
0.045
0.023
0.008
0.008
-
0.36
0.36
1.14
0.58
0.20
0.20
-
(b)
b1
b2
b3
c
SECTION A-A
S
S
S
D
bbb
C A - B
D
4
2
3
5
5
-
BASE
Q
PLANE
A
-C-
c1
D
SEATING
PLANE
L
α
E
0.220
5.59
S1
eA
A A
e
e
0.100 BSC
2.54 BSC
b2
eA/2
b
c
eA
eA/2
L
0.300 BSC
0.150 BSC
7.62 BSC
3.81 BSC
-
-
M
S
S
M
S
S
D
ccc
C A - B
D
aaa
C A - B
0.125
0.200
3.18
5.08
-
Q
0.015
0.005
0.005
0.060
0.38
0.13
0.13
1.52
6
7
-
NOTES:
S1
S2
-
-
-
-
1. Index area: A notch or a pin one identification mark shall be locat-
ed adjacent to pin one and shall be located within the shaded
area shown. The manufacturer’s identification shall not be used
as a pin one identification mark.
o
o
o
o
90
105
90
105
-
α
aaa
bbb
ccc
M
-
-
-
-
0.015
0.030
0.010
0.0015
-
-
-
-
0.38
0.76
0.25
0.038
-
-
2. The maximum limits of lead dimensions b and c or M shall be
measured at the centroid of the finished lead surfaces, when
solder dip or tin plate lead finish is applied.
-
2
8
3. Dimensions b1 and c1 apply to lead base metal only. Dimension
M applies to lead plating and finish thickness.
N
16
16
4. Corner leads (1, N, N/2, and N/2+1) may be configured with a
partial lead paddle. For this configuration dimension b3 replaces
dimension b1.
5. This dimension allows for off-center lid, meniscus, and glass
overrun.
6. Dimension Q shall be measured from the seating plane to the
base plane.
7. Measure dimension S1 at all four corners.
8. N is the maximum number of terminal positions.
9. Dimensioning and tolerancing per ANSI Y14.5M - 1982.
10. Controlling Dimension: Inch.
11. Lead Finish: Type A.
12. Materials: Compliant to MIL-M38510.
Spec Number 511064-883
8-17
Semiconductor
HA2557
Wideband Four Quadrant
Current Output Analog Multiplier
DESIGN INFORMATION
August 1999
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
Typical Performance Curves
V
BANDWIDTH
V
BANDWIDTH
-3dB AT 77MHz
Y
X
-32
-37
-42
-32
-37
-42
-3dB at 131MHz
100M
IOUT INTO 50Ω VY BANDWIDTH
VY = 200MVP-P, VX = 4VDC
IOUT INTO 50Ω VX BANDWIDTH
VX = 200mVP-P VY = 4VDC
1M
10M
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
HA2557 INTO HA2842 AS I TO V CONVERTER V FULLPOWER
V
TRANSIENT RESPONSE OF HA-2842 AS I TO V
CONVERTER
Y
Y
BANDWIDTH
Top: V Input 0 to 4V Step
Bottom: HA-2842 0 to 4V Response
Y
4
INTERNAL RX AS FEEDBACK RESISTOR,
PLUS 3pF COMPENSATION CAPACITOR
Y = 3.5VP-P, VX = 4VDC
2
V
0
-2
-4
-6
-3dB at 24.4MHz
1K
10K
100K
1M
10M
100M
FREQUENCY (Hz)
Spec Number 511064-883
8-18
HA2557
DESIGN INFORMATION(Continued)
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
Typical Performance Curves
DRIVING HA5023 AS I TO V CONVERTER V BANDWIDTH
V TRANSIENT RESPONSE OF HA5023 AS I TO V CONVERTER
Y
Y
Top: V Input 0 to 4V Step
Y
Bottom: HA5023 0 to 4V Response
FIRST STAGE USING A 909Ω FEEDBACK RESISTOR, OUTPUT
OF SECOND STAGE (AMP 2) WITH 619Ω FEEDBACK RESISTOR
AND 220Ω GAIN RESISTOR IN PARALLEL WITH A 10pF
4
PLUS 220Ω, VY = 200mVP-P, VX = 4VDC
2
0
-3dB at 94MHz
-2
-4
1M
10M
100M
FREQUENCY (Hz)
DRIVING HA5023 AS I TO V CONVERTER V BANDWIDTH
V
TRANSIENT RESPONSE OF HA5023 AS I TO V CONVERTER
Y
X
Top: V Input 0 to 4V Step
X
Bottom: HA5023 0 to 4V Response
FIRST STAGE USING A 909Ω FEEDBACK RESISTOR, OUTPUT
OF SECOND STAGE (AMP 2) WITH 619Ω FEEDBACK RESISTOR
AND 220Ω GAIN RESISTOR IN PARALLEL WITH A
4
2
0
10pF PLUS 220Ω, VX = 200mVP-P, VY = 4VDC
-3dB at 98MHz
-2
-4
1M
10M
100M
FREQUENCY (Hz)
DRIVING HA5023 AS I TO V CONVERTER V FULLPOWER
DRIVING HA5023 AS I TO V CONVERTER V FULLPOWER
Y
X
BANDWIDTH
BANDWIDTH
FIRST STAGE USING A 909Ω FEEDBACK RESISTOR OUTPUT
OF SECOND STAGE (AMP 2) WITH 619Ω FEEDBACK RESISTOR
AND 220Ω GAIN RESISTOR IN PARALLEL WITH A 10pF
FIRST STAGE USING A 909Ω FEEDBACK RESISTOR OUTPUT
OF SECOND STAGE (AMP 2) WITH 619Ω FEEDBACK RESISTOR
AND 220Ω GAIN RESISTOR IN PARALLEL WITH A 10pF
4
4
2
0
PLUS 220Ω, VY = 3.5VP-P, VX = 4VDC
2
0
PLUS 220Ω, VX = 3.5VP-P, VY = 4VDC
-3dB at 80MHz
-3dB at 80MHz
-2
-4
-2
-4
1M
10M
100M
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
Spec Number 511064-883
8-19
HA2557
DESIGN INFORMATION(Continued)
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
Typical Performance Curves
INPUT BIAS CURRENT
ABSOLUTE VALUE OFFSET VOLTAGE
14
13
12
11
10
9
7
6
5
4
3
2
1
|VIOX|
8
7
6
|VIOY|
5
0
-100
-50
0
50
100
150
4
TEMPERATURE (oC)
-100
-50
0
50
100
150
TEMPERATURE (oC)
SCALE FACTOR ERROR
INPUT VOLTAGE RANGE
2
1.5
1
6
5
4
3
2
X INPUT
0.5
0
Y INPUT
-0.5
-1
1
4
6
8
10
12
14
16
-100
-50
0
50
100
150
±SUPPLY VOLTAGE (V)
TEMPERATURE (oC)
INPUT COMMON MODE RANGE
15
10
5
X INPUT
Y INPUT
0
-5
X AND Y INPUT
-10
-15
4
6
8
10
12
14
16
±SUPPLY VOLTAGE (V)
Spec Number 511064-883
8-20
HA2557
DESIGN INFORMATION(Continued)
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
Applications Information
Operation at Reduced Supply Voltages
products where one input was dedicated to a slow moving
control function as is required for Automatic Gain Control.
The HA-2557 is versatile enough for both.
The HA-2557 will operate over a range of supply voltages,
±5V to ±15V. Use of supply voltages below ±12V will reduce
input and output voltage ranges. See “Typical Performance
Curves” for more information.
Offset Adjustment
ACOS(ωΑτ) VX+
+
-
The channel offset voltage may be nulled by using a 20K poten-
tiometer between the VYIO or VXIO adjust pin A and B and con-
necting the wiper to V-. Reducing the channel offset voltage will
reduce AC feedthrough and improve the multiplication error.
AUDIO
X
VX-
1/10kVΩ
VY+
X
IOUT
RZ
CCOS(ωCτ)
Y
+
-
CARRIER
Theory of Operation
VY-
The HA-2557 creates an output current that is the product of
the X and Y input voltages divided by a constant scale factor
of 10kVΩ. The resulting output has the correct polarity in
each of the four quadrants defined by the combinations of
positive and negative X and Y inputs. This results in the fol-
lowing equation, where X and Y are high impedance differ-
ential inputs:
AC
--------------
(Cos (ωC – ω ) τ + Cos (ωC + ω ) τ)
A A
20kVΩ
I
=
OUT
FIGURE 2. AM SIGNAL GENERATION
X x Y
I
= ------------
OUT
VX+
10kVΩ
AM SIGNAL
CARRIER
+
-
X
Y
VX-
To accomplish this the differential input voltages are first
converted into differential currents by the X and Y input
transconductance stages. The currents are then scaled by a
constant reference and combined in the multiplier core. The
multiplier core is a basic Gilbert Cell that produces a differ-
ential output current proportional to the product of X and Y
input signal currents. This current is converted into the out-
put for the HA-2557.
1/10KVΩ
X
IOUT
RZ
VY+
+
-
VY-
LIKE THE FREQUENCY DOUBLER YOU GET
AUDIO CENTERED AT DC AND 2FC.
The purpose of the reference circuit is to provide a stable
current, used in setting the scale factor. This is achieved with
a bandgap reference circuit to produce a temperature stable
voltage of 1.2V which is forced across a NiCr resistor. Slight
adjustments to scale factor may be possible by overriding
the internal reference with the VREF pin. The scale factor is
used to maintain the output of the multiplier within the nor-
mal operating range of ±1.6mA when full scale inputs are
applied.
FIGURE 3. SYNCHRONOUS AM DETECTION
VX+
VX-
ACOS(ωτ)
+
-
X
Y
IOUT
X
1/10kVΩ
Communications
RZ
VY+
+
ACOS(ωτ+φ)
The multiplier function of the HA-2557 has applications in
AM Signal Generation, Synchronous AM Detection and
Phase Detection. These circuit configurations are shown in
Figure 2, Figure 3 and Figure 4. By feeding a signal into both
X and Y inputs a Square function results that is useful as a
Frequency Doubler as shown in Figure 5. The HA-2557 is
particularly useful in applications that require the interaction
of high speed signals. Both inputs X and Y have similar wide
bandwidth and input characteristics. This is unlike earlier
-
VY-
2
A
--------------
(Cos (φ) + Cos (2ωτ + φ) )
I
=
OUT
20kVΩ
DC COMPONENT IS PROPORTIONAL TO COS(Φ)
FIGURE 4. PHASE DETECTION
Spec Number 511064-883
8-21
HA2557
DESIGN INFORMATION(Continued)
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
VX+
ACOS(ωτ)
16 NC
15 NC
+
-
1
2
3
4
5
6
7
8
REF
X
Y
VX-
NC
NC
NC
IOUT
1/10KVΩ
VY+
X
14
13
12
11
10
9
NC
VX
RZ
+
-
X
0.01µ
VY
VY-
0.01µ
Y
X
+15V
2.5K
RZ
1.0µ
-15V
(ACos (ωτ) × ACos (ωτ) ) = 10kVΩ (I
)
1.0µ
OUT
NC
IOUT
WHICH EVALUATES TO:
2
A
--------
I
=
20K (1 + Cos (2ωτ) )
3pF
OUT
FIGURE 5. FREQUENCY DOUBLER
-
VOUT
+
HA-2842
Although the X and Y inputs have similar AC characteristics,
they are not the same. The designer should consider input
parameters such as small signal bandwidth and ac
feedthrough to get the most performance from the HA-2557.
The Y channel is the faster of the two inputs with a small sig-
nal bandwidth of typically 130MHz verses 75MHz for the X
channel. Therefore in AM Signal Generation, the best perfor-
mance will be obtained with the Carrier applied to the Y
channel and the modulation signal (lower frequency) applied
to the X channel.
10kΩ
0.1µF
1N914
10kΩ
+15V
0.01µF
-
+
5kΩ
HA-5127
5.6V
20kΩ
Operation Over a Wide Supply Range
0.1µF
The HA-2557 is able to operate over a wide supply voltage
range ±5V to ±17.5V. The ±5V range is particularly useful in
video applications. At ±5V the input voltage range is reduced
to ±1.4V limiting the fullscale output current. Another current
output option is the HA-2556 voltage output multiplier config-
ured for current output with an output sensing resistor (Refer
to the HA-2556 datasheet).
FIGURE 6. AUTOMATIC GAIN CONTROL
This multiplier has the advantage over other AGC circuits, in
that the signal bandwidth is not affected by the control signal
gain adjustment.
Voltage Output Conversion
Automatic Gain Control
The HA-2842 is an excellent choice to perform the output
current to voltage conversion as shown in Figure 7. The
combination of 400V/µs slew rate and 80MHz Gain Band-
width product will maintain signal dynamics while providing a
full scale ±4V output. The HA-2842 also provides a hefty out-
put drive capability of 100mA.
Figure 6 shows the HA-2557 configured in an Automatic
Gain Control or AGC application. The HA-2842 serves as an
output I to V converter using RZ which is trimmed to provide
an accurate 4V Fullscale conversion. Refer to Voltage
Output Conversion for more details about this function. The
HA-5127 low noise amplifier provides the gain control signal
to the X input. This control signal sets the peak output volt-
age of the multiplier to match the preset reference level. The
feedback network around the HA-5127 provides a response
time adjustment. High frequency changes in the peak are
rejected as noise or the desired signal to be transmitted.
These signals do not indicate a change in the average peak
value and therefore no gain adjustment is needed. Lower
frequency changes in the peak value are given a gain of -1
for feedback to the control input. At DC the circuit is an inte-
grator automatically compensating for offset and other con-
stant error terms.
This voltage feedback amplifier takes advantage of the inter-
nal RZ resistor, trimmed to provide an accurate 4V fullscale
conversion. The parasitic capacitance at the negative input
of the HA-2842 must be compensated with a 3pF capacitor
from pin 2 to pin 6. This compensation will also insure that
the amp will see a noise gain of 2 at its crossover frequency,
the minimum required for stability with this device. The full
power bandwidth curve and large signal pulse response for
this circuit are shown in Typical Performance Curves. The
fast slew rate of the HA-2842 results in a minimal reduction
of bandwidth for large signals.
Spec Number 511064-883
8-22
HA2557
DESIGN INFORMATION(Continued)
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
Another choice for an I to V converter that takes better The optimum bandwidth is achieved in stage 1 with a 909Ω
advantage of the wide bandwidth of the HA-2557, is to use feedback resistor. This voltage is then gained up by the sec-
the HA5023 Dual 100MHz current feedback amp. The opti- ond stage to provide a ±4V Fullscale Voltage output with a
mum bandwidth of a current feedback amp is obtained with a bandwidth in excess of 90MHz. The 10pF capacitor and the
fixed feedback resistor. Therefore scaling the I to V conver- additional 220Ω resistor improve gain flatness and reduce
sion to a convenient value requires two stages. Fortunately gain peaking. The HA5023 also provides excellent Full
the HA5023 provides two wideband amplifiers in a single 8 Power Bandwidth (-3dB at 80MHz for a 3.5VP-P signal).
pin Mini-DIP or SOIC package, while their current feedback Refer to Typical Performance Curves for more information.
architecture provides signal gain with minimal reduction in
bandwidth. This circuit configuration is shown in Figure 8.
16 NC
15 NC
1
2
3
4
5
6
7
8
16 NC
15 NC
1
2
3
4
5
6
7
8
REF
REF
NC
NC
NC
NC
NC
NC
14
13
12
11
10
9
NC
14
13
12
11
10
9
NC
VX
VX
X
0.01µ
X
0.01µ
VY
VY
Y
X
0.01µ
Y
X
0.01µ
+15V
+15V
2.5K
RZ
1.0µ
1.0µ
2.5K
RZ
-15V
NC
NC
-15V
1.0µ
IOUT
1.0µ
IOUT
909Ω
1 of 2
NC
3pF
10pF
220Ω
619Ω
2
3
220Ω
2
6
5
2 of 2
6
-
-
8
VOUT
-
+
+
1
VOUT
HA5023
(1/2)
HA-2842
+
0.01µ
1.0µ
0.01µ
1.0µ
3
0.01µ
4
HA5023
(1/2)
1.0µ
0.01µ
1.0µ
8
+15V -15V
+15V -15V
FIGURE 8. VOLTAGE OUTPUT CONVERSION
FIGURE 7. VOLTAGE OUTPUT CONVERSION
Spec Number 511064-883
8-23
HA2557
DESIGN INFORMATION(Continued)
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
TYPICAL PERFORMANCE CHARACTERISTICS
Device Tested at V
= 15V, R (Pin 10) Not Connected, Unless Otherwise Specified.
Z
SUPPLY
PARAMETERS
SYMBOL
CONDITIONS
V , V = ±4V
TEMPERATURE
TYPICAL
±1.5
±3.0
±0.003
±0.02
±0.05
10
UNITS
%FS
o
Multiplication Error
ME
+25 C
Y
X
o
o
+125 C, -55 C
%FS
o
o
o
Multiplication Error Drift
Linearity Error
METC
LE3V
LE4V
SF
V , V = ±4V
+125 C, -55 C
%FS/ C
Y
X
o
V , V = ±3V
+25 C
%FS
%FS
kVΩ
nV/√Hz
nV/√Hz
dB
Y
X
o
V , V = ±4V
+25 C
Y
X
o
Scale Factor
+25 C
o
Voltage Noise
E (1kHz)
f = 1kHz, V = 0V, V = 0V
+25 C
150
40
N
X
Y
o
E (100kHz)
f = 100kHz, V = 0V, V = 0V
+25 C
N
X
Y
o
Positive Power Supply
Rejection Ratio
+PSRR
-PSRR
V + = +12V to +15V,
+25 C
80
S
V - = -15V
S
o
o
+125 C, -55 C
80
dB
o
Negative Power Supply
Rejection Ratio
V - = -12V to -15V,
+25 C
55
dB
S
V + = +15V
S
o
o
+125 C, -55 C
55
dB
o
Supply Current
I
V , V = 0V
+25 C
13
mA
CC
X
Y
o
o
+125 C, -55 C
13
mA
INPUT CHARACTERISTICS
Input Offset Voltage
o
V
V
= ±4V
= ±4V
+25 C
±4
±8
mV
mV
IO
Y
o
o
+125 C, -55 C
o
o
o
Input Offset Voltage Drift
Input Bias Current
V
TC
V
V
+125 C, -55 C
±35
±8
µV/ C
IO
Y
X
o
I
= 0V, V = 4V
+25 C
µA
µA
µA
µA
V
B
Y
o
o
+125 C, -55 C
±12
±0.5
±1.0
±4
o
Input Offset Current
I
V
= 0V, V = 4V
+25 C
IO
X
Y
o
o
+125 C, -55 C
o
Differential Input Range
+25 C
Spec Number 511064-883
8-24
HA2557
DESIGN INFORMATION(Continued)
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
TYPICAL PERFORMANCE CHARACTERISTICS
Device Tested at V
= 15V, R (Pin 10) Not Connected, Unless Otherwise Specified.
Z
SUPPLY
PARAMETERS
SYMBOL
CONDITIONS
TEMPERATURE
TYPICAL
UNITS
V
CHARACTERISTICS
Y
o
Bandwidth
BW(V )
-3dB, V = 4V, V ≤ 200mV
P-P
+25 C
130
-52
MHz
dB
Y
X
Y
o
AC Feedthrough
V
(5MHz)
f
= 5MHz, V = 200mV
+25 C
ISO
O
Y
P-P
V
= Nulled (Note 1)
X
o
Rise and Fall Time
T , T
V = -4V to +4V Step, V = 4V,
10% to 90% pts
+25 C
7
1
ns
R
F
Y
X
o
Differential Input
Resistance
R
(V )
V
= ±4V, V = 0V
+25 C
MΩ
IN
Y
Y
X
V
CHARACTERISTICS
X
o
Bandwidth
BW(V )
-3dB, V = 4V,
+25 C
75
MHz
dB
X
Y
V
≤ 200mV
X
P-P
o
AC Feedthrough
V
(5MHz)
f
V
V
= 5MHz,
= 200mV
= nulled (Note 1)
+25 C
-54
ISO
O
X
Y
P-P
o
Rise and Fall Time
T , T
V
= -4V to +4V step, V = 4V,
+25 C
7
1
ns
R
F
X
Y
10% to 90% pts
o
Differential Input
Resistance
R
(V )
V
= ±4V, V = 0V
+25 C
MΩ
IN
X
X
Y
OUTPUT CHARACTERISTICS
Output Offset Current
o
I
V , V = 0V
+25 C
2.4
5.6
µA
µA
OO
X
Y
o
o
+125 C, -55 C
o
Full Scale Output Current
Output Resistance
Output Capacitance
NOTE:
I
FS
V , V = ±4V
+25 C
±1.6
1.5
mA
MΩ
pF
OUT
X
Y
o
Z
V
= ±10V
+25 C
OUT
OUT
o
C
+25 C
6.5
OUT
1. Offset voltage applied to minimize feedthrough signal.
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate
and reliable. However, no responsibility is assumed by Intersil or its subsidiaries 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 Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
Spec Number 511064-883
8-25
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