INTERSIL HFA3763

HFA3763
Data Sheet
June 1999
File Number
400MHz Quadrature Modulator and AGC
Features
The HFA3763 is a highly integrated
baseband converter for quadrature
modulation applications. The HFA3763
400MHz quadrature modulator and
AGC is one of the seven chips in the
PRISM® full duplex chip set (see Typical Application
Diagram). It features all the necessary blocks for baseband
modulation of I and Q signals. An output AGC and Baseband
shaping filters are integrated in the design. Four filter
bandwidths are programmable via a two bit digital control
interface. In addition, these filters are continuously tunable
over a ±20% frequency range via one external resistor. The
modulator channel receives digital or analog I and Q data for
processing. To achieve broadband operation, the Local
Oscillator frequency input is required to be twice the desired
frequency of modulation. A selectable buffered divide by 2
LO output and a stable reference voltage are provided for
convenience of the user.
• Integrates all IF Transmit Functions
Ordering Information
• Wireless Local Area Networks
™
PART NUMBER
HFA3763IN
• Broad Frequency Range . . . . . . . . . . . 10MHz to 400MHz
• I/Q Amplitude and Phase Balance . . . . . . . . . . . 0.2dB, 2o
• 5th Order Programmable
Low Pass Filter. . . . . . . . . . . . . . . . . . . 2.2MHz - 17.6MHz
• 400MHz Output AGC Amplifier/Attenuator . . . . . . . .45dB
• Selectable Digital or Analog TX Baseband Inputs
• Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . -15dBm
• Fast Transmit-on Switching . . . . . . . . . . . . . . . . . . . . . 1µs
• Power Management/Standby Mode
• Single Supply 2.7V to 5.5V Operation
Applications
• Wireless Local Loop Systems
• PCMCIA Wireless Duplex Transceivers
TEMP.
RANGE (oC)
-40 to 85
4237.4
PACKAGE
• ISM Systems
PKG. NO.
80 Ld TQFP
• TDMA Packet Protocol Radios
Q80.14x14
• PCS/Wireless PBX
÷2
MOD_LO_OUT
LPF_TUNE_0
LPF_SEL0
LPF_SEL1
MOD_LO_IN
LPF_TUNE_1
Simplified Block Diagram
2V
REF
2V REF
0o/90o
LO_GND
LPF_TXI_IN
I
∑
IF_OUT
LPF_TXQ_IN
4-1
TX D OR A
LPF_TX_I
LPF_TX_Q
MOD_TX_I
MOD_TX_Q
IF_AGC_IN
MOD_TX_IF_OUT
AGC_CTRL
Q
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.
HFA3763
Pinout
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
AGC_VCC
GND
IF_OUT
GND
AGC_PE
GND
AGC_VCC
80 LEAD TQFP
TOP VIEW
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
GND
GND
GND
GND
GND
GND
GND
GND
LPF_VCC
2V REF
LPF_BYP
LPF_TXI_IN
LPF_TXQ_IN
NC
NC
LPF_SEL1
LPF_SEL0
LPF_TUNE1
LPF_TUNE0
TX D or A
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
GND
AGC_CTRL
GND
AGC_VCC
GND
IF_AGC_IN
GND
GND
GND
GND
LO_GND
MOD_BYP
MOD_BYP
MOD_VCC
MOD_LO_OUT
MOD_VCC
MOD_LO_IN
GND
MOD_TX_IF_OUT
MOD_TX_PE
MOD_TXIMOD_TXQ+
MOD_TXQ-
GND
LPF_TX_PE
LPF_TXQLPF_TXQ+
LPF_TXILPF_TXI+
NC
NC
NC
NC
GND
GND
NC
NC
NC
NC
MOD_TXI+
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Typical Application Diagram
PRISM FULL DUPLEX CHIP SET
HFA3661
(File #4240)
HFA3424/21
(File #4131)
D
U
P
L
E
X
E
R
LNA
LNA
RF/IF
CONVERTER
BPF
HFA3761 (File #4236)
FILTER
LPF
IF AGC
A/D
QMODEM
LPF
RF LO1
HFA3524
(File #4062)
SYNTHESIZER
IF LO1
BASEBAND
HFA3524
(File #4062)
HFA3925
(File #4132)
PA
SYNTHESIZER
IF LO2
HFA3763
(File #4237)
RF LO2
AGC
IF/RF
CONVERTER
BPF
HFA3663 (File #4241)
HFA3664 (File #4242)
LPF
AGC
QMODEM
D/A
LPF
OPTIONAL WHEN IN
ANALOG MODE
PRISM FULL DUPLEX RADIO
CHIP SET, FILE #4238
4-2
HFA3763
TX D or A
LPF_TXI_IN
LPF_TXQ_IN
Block Diagram
LPF_TX_PE
LPF_SEL1
LPF_SEL0
I
Q
LPF_TUNE0
LPF_TUNE1
LPF_TX_Q LPF_TX_Q +
LPF_TX_I LPF_TX_I +
1.25V
/ 90o
MOD TX I +
MOD TX I MOD TX Q +
MOD TX Q -
0o
2V
REF
∑
÷2
MOD_TX_PE
VCC
MOD_TX_IF_OUT
250
IF_AGC_IN
AGC_CTRL
10K
LO_GND
VCC
L1
OUTPUT MATCH COMPONENTS TABLE
C1
FREQ.
L2
(2XLO)
MOD_LO_IN
C2
50Ω
NETWORK
50Ω
MOD_LO_OUT
IF_OUT
NOTE: VCC, GND and Bypass capacitors not shown.
4-3
L1
C1
L2
C2
105MHz 270nH
12pF
82nH
15pF
280MHz
5.0pF
33nH
6.0pF
82nH
HFA3763
Pin Descriptions
PIN
SYMBOL
DESCRIPTION
9
LPF_VCC
10
2V REF
11
LPF_BYP
12
LPF_TXI_In
Low pass filter in phase (I) channel transmit input. Conventional or attenuated direct coupling is required for digital
inputs. AC couple for analog input.
13
LPF_TXQ_In
Low pass filter quadrature (Q) channel transmit input. Conventional or attenuated direct coupling is required for
digital inputs. AC couple for analog input.
14
NC
Connected internally for test purpose. Leave this pin floating.
15
NC
Connected internally for test purpose. Leave this pin floating.
16
LPF_Sel1
17
LPF_Sel0
Supply pin for the Low pass filter. Use high quality decoupling capacitors right at the pin.
Stable 2V reference voltage output for external applications. Loading must be higher than 10kΩ. A bypass
capacitor of at least 0.1µF is required.
Internal reference bypass pin. This is the common voltage (VCM) used for the LPF digital thresholds. Requires
0.1µF decoupling capacitor.
Digital control input pins. Selects four programmed cut off frequencies for the transmit channel. Tuning speed from
one cutoff to another is less than 1µs.
SEL1
LO
LO
SEL0
LO
HI
CUTOFF FREQUENCY
2.2MHz
4.4MHz
SEL1
HI
HI
SEL0
LO
HI
CUTOFF FREQUENCY
8.8MHz
17.6MHz
18
LPF_Tune1
These two pins are used to fine tune the Low pass filter cutoff frequency. A resistor connected between the two
pins (RTUNE) will fine tune the transmit filters. Refer to the tuning equation in the LPF AC specifications.
19
LPF_Tune0
20
TX D or A
22
LPF_TX_PE
23
LPF_TXQ-
Negative output of the transmit Low pass filter, quadrature channel. AC coupling is required. Normally connects to
the inverting input of the quadrature Modulator (Mod_TXQ-), pin 40.
24
LPF_TXQ+
Positive output of the transmit Low pass filter, quadrature channel. AC coupling is required. Normally connects to
the non inverting input of the quadrature Modulator (Mod_TXQ+), pin 39.
25
LPF_TXI-
Negative output of the transmit Low pass filter, in phase channel. AC coupling is required. Normally connects to
the inverting input of the in phase Modulator (Mod_TXI-), pin 38.
26
LPF_TXI+
Positive output of the transmit Low pass filter, in phase channel. AC coupling is required. Normally connects to the
non inverting input of the in phase Modulator (Mod_TXI+), pin 37.
27
NC
Connected internally for test purpose. Leave this pin floating.
28
NC
Connected internally for test purpose. Leave this pin floating.
29
NC
Connected internally for test purpose. Leave this pin floating.
30
NC
Connected internally for test purpose. Leave this pin floating.
33
NC
Connected internally for test purpose. Leave this pin floating.
34
NC
Connected internally for test purpose. Leave this pin floating.
35
NC
Connected internally for test purpose. Leave this pin floating.
36
NC
Connected internally for test purpose. Leave this pin floating.
37
Mod_TXI+
In phase modulator non inverting input. AC coupling is required. This input is normally coupled to the Low pass
filter positive output (LPF_TXI+), pin 26.
38
Mod_TXI-
In phase modulator inverting input. AC coupling is required. This input is normally coupled to the Low pass filter
negative output (LPF_TXI-), pin 25.
39
Mod_TXQ+
Quadrature modulator non inverting input. AC coupling is required. This input is normally coupled to the Low pass
filter positive output (LPF_TXQ+), pin 24.
40
Mod_TXQ-
Quadrature modulator inverting input. AC coupling is required. This input is normally coupled to the Low pass filter
negative output (LPF_TXQ-), pin 23.
Selects the configuration of the Transmit baseband input for either Digital or Analog (500mVP-P max).
Tie to a High for Analog and Ground for Digital inputs. Requires decoupling capacitor for analog and a simple direct
coupled attenuator for digital inputs.
Digital input control pin to enable the LPF transmit mode of operation. Enable logic level is High.
4-4
HFA3763
Pin Descriptions
(Continued)
PIN
SYMBOL
DESCRIPTION
41
Mod_TX_PE
42
Mod_TX_IF_Out
44
Mod_LO_In
(2XLO)
45
Mod_VCC
46
Mod_LO_Out
47
Mod_VCC
Modulator supply pin. Use high quality decoupling capacitors right at the pin.
48
MOD_BYP
This pin must be connected to pin 49 and decoupled to gnd. (Note 1)
49
MOD_BYP
This pin must be connected to pin 48. (Note 1)
50
LO_GND
55
IF_AGC_IN
AC coupled input to the AGC amplifier.
57
AGC_VCC
AGC supply pin supply pin. Use high quality decoupling capacitors right at the pin.
59
AGC_CTRL
61
AGC_VCC
63
AGC_PE
65
AGC_IF_OUT
67
AGC_VCC
See
Pinout
GND
Digital input control to enable the Modulator section. Enable logic level is High for transmit.
Modulator open collector output, single ended. Termination resistor to VCC with a typical value of 250Ω.
Single ended local oscillator current input. Frequency of input signal must be twice the required modulator carrier
LO frequency. Input current is optimum at 200µARMS. Input matching networks and filters can be designed for a
wide range of power and impedances at this port. Typical input impedance is 130Ω.This pin requires AC coupling.
NOTE: High second harmonic content input waveforms may degrade I/Q phase accuracy.
Modulator supply pin. Use high quality decoupling capacitors right at the pin.
Divide by 2 buffered output reference from “Mod_LO_in” input. Used for external applications where the
modulating and demodulating carrier reference frequency is required. 50Ω single end driving capability. AC
coupling is required. This output can be disabled by shorting to VCC or floating pin 50.
When grounded, this pin enables the LO buffer (Mod_LO_Out). When open (NC) it disables the LO buffer.
AGC control DC control voltage input requires external resistor to set scale factor. 10K for optimum temp. co. May
require decoupling filtering capacitor.
AGC supply pin supply pin. Use high quality decoupling capacitors right at the pin.
Digital input control for the AGC amplifier. Enable logic level is High.
AGC amplifier output. Output impedance of 250Ω. Need to be connected to VCC by an inductor with reactance
well above 250Ω.
AGC supply pin supply pin. Use high quality decoupling capacitors right at the pin.
All remaining pins not listed above must be connected to a solid ground plane.
NOTE:
1. If pin 50 is grounded, otherwise float.
4-5
HFA3763
Absolute Maximum Ratings
TA = 25oC
Thermal Information
Thermal Resistance (Typical, Note 1)
θJA (oC/W)
TQFP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
75
Package Power Dissipation at 70oC
Plastic TQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.1W
Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC
Maximum Storage Temperature Range . . . . . . . . . . . -65 ≤ TA ≤ 150
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300oC
(TQFP - Lead Tips Only)
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.0V
Voltage on Any Other Pin. . . . . . . . . . . . . . . . . . -0.3V to VCC +0.3V
Operating Conditions
Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . +2.7V to +5.5V
Operating Temperature Range . . . . . . . . . . . . . . -40oC ≤ TA ≤ 85oC
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.
NOTE:
1. θJA is measured with the component mounted on an evaluation PC board in free air.
Cascaded DC Electrical Specifications
VCC = 4.5V to 5.5V, Unless Otherwise Specified
(NOTE 2)
TEST
LEVEL
TEMP
(oC)
MIN
TYP
MAX
UNITS
Total Supply Current, TX Mode at 5.5V
A
Full
-
80
106
mA
Shutdown Current at 5.5V
A
Full
-
0.8
1.0
mA
All Digital Inputs VIH (TTL Threshold for All VCC)
A
Full
2.0
-
VCC
V
All Digital Inputs VIL (TTL Threshold for All VCC)
A
Full
-0.2
-
0.8
V
High Level Input Current at 5.5V VCC for pin 16 with VIN = 2.4V
A
Full
-200
-65
0
µA
High Level Input Current at 5.5V VCC for pin 16 with VIN = 4.0V
A
Full
-150
-30
0
µA
Low Level Input Current at 5.5V VCC for pin 16 with VIN = 0.8V
A
Full
-300
-95
0
µA
High Level Input Current at 5.5V VCC for pins 17, 20, and 22 with VIN = 2.4V
A
Full
0
50
200
µA
High Level Input Current at 5.5V VCC for pins 17, 20, and 22 with VIN = 4.0V
A
Full
0
80
300
µA
Low Level Input Current at 5.5V VCC for pins 17, 20, and 22 with VIN = 0.8V
A
Full
0
15
150
µA
High Level Input Current at 5.5V VCC for pins 41 and 63 with VIN = 2.4V
A
Full
-20
1
20
µA
High Level Input Current at 5.5V VCC for pin 41 with VIN = 4.0V
A
Full
0
110
300
µA
High Level Input Current at 5.5V VCC for pin 63 with VIN = 4.0V
A
Full
-20
1.5
20
µA
Low Level Input Current at 5.5V VCC for pins 41 and 63 with VIN = 0.8V
A
Full
-20
.1
20
µA
Power Down/Up Switching Speed
C
25
-
10
-
µs
Reference Voltage
A
Full
1.85
2.0
2.15
V
Reference Voltage Variation Over Temperature
B
Full
-
800
-
µV/oC
Reference Voltage Variation Over Supply Voltage
B
25
-
1.6
-
mV/V
Reference Voltage Minimum Load Resistance
C
25
10
-
-
kΩ
PARAMETER
NOTE:
2. A = Production Tested, B = Based on Characterization, C = By Design
Cascaded AC Electrical Specifications, Modulator Performance
VCC = 4.5V to 5.5V
(NOTE 3)
TEST LEVEL
TEMP
(oC)
MIN
TYP
MAX
UNITS
IF Modulator Output Power (Note 6)
A
25
-4
1
6
dBm
IF Modulator I/Q Amplitude Balance (Note 4)
B
Full
-1.0
0
+1.0
dB
IF Modulator I/Q Phase Balance (Note 4)
B
Full
-4.0
0
+4.0
Degrees
PARAMETER
4-6
HFA3763
Cascaded AC Electrical Specifications, Modulator Performance
VCC = 4.5V to 5.5V (Continued)
(NOTE 3)
TEST LEVEL
TEMP
(oC)
MIN
TYP
MAX
UNITS
A
Full
25
41
-
dBc
A
25
33
41
-
dBc
IF Modulator Side Band Suppression at 400MHz
C
25
28
-
-
dBc
IF Mod Carrier Suppression (LO Buffer Enabled) (Note 5)
C
25
28
30
-
dBc
IF Mod Carrier Suppression (LO Buffer Disabled) (Note 5)
A
25
28
38
-
dBc
IF Modulator I/Q 3dB Cutoff SEL0/1 = 2.2MHz
B
25
1.98
2.2
2.42
MHz
IF Modulator I/Q 3dB Cutoff SEL0/1 = 4.4MHz
B
25
3.96
4.4
4.84
MHz
IF Modulator I/Q 3dB Cutoff SEL0/1 = 8.8MHz
B
25
7.92
8.8
9.68
MHz
IF Modulator I/Q 3dB Cutoff SEL0/1 = 17.6MHz
B
25
15.84
17.6
19.36
MHz
PARAMETER
IF Modulator Side Band Suppression at 105MHz (Note 5)
NOTES:
3. A = Production Tested, B = Based on Characterization, C = By Design
4. Data is characterized by DC levels applied to MOD TXI and Q pins for 4 quadrants with LO output as reference or indirectly by the SSB
characteristics.
5. Analog mode with an input frequency of 1MHz and an input amplitude of 400mVP-P and a 2.2MHz lowpass filter cutoff with VAGC = 1.25V.
6. Data is characterized with VAGC = 1V with an input of 400mVP-P at LPF_TXI_IN and LPF_TXQ_IN.
DC/AC Electrical Specifications AGC/Attenuator, Individual Performance
PARAMETER
(NOTE 7)
TEST LEVEL
VCC = 4.5V to 5.5V Unless Otherwise Specified
TEMP
(oC)
MIN
TYP
MAX
UNITS
DC ELECTRICAL SPECIFICATIONS AGC ATTENUATOR INDIVIDUAL PERFORMANCE
AGC Scale Factor at 100MHz at 3dB
A
25
36
45
54
dB/V
AGC Linearity: Max-to-Min Scale Factor at 0dB to 45dB AGC with
External 10kΩ
A
25
0.9:1
2:1
3:1
-
AGC Control Input for 45dB Max Attenuation with External 10kΩ
A
25
1.7
2.0
2.5
V
AGC Control Input for -3 dB from Minimum Attenuation
(Gain Approx. = 6dB) with External 10kΩ
A
25
1.0
1.2
1.4
V
AGC Input Bias Current with External 10kΩ at -45 dB
A
Full
-
-
120
µA
AC ELECTRICAL SPECIFICATIONS AGC ATTENUATOR INDIVIDUAL PERFORMANCE
Frequency Range
B
25
10
-
400
MHz
Power Gain at min AGC at 100MHz VAGC = 1.0V
C
25
-
9.0
-
dB
Power Gain Temperature Coefficient VAGC = 1.0V
B
25
-
+0.013
-
dB/deg
Output P1dB at Minimum AGC, 100MHz VAGC = 1.0V
B
25
-
8.0
-
dBm
Output IP3 at Minimum AGC, 100MHz VAGC = 1.0V
B
25
-
17.5
-
dBm
AGC/Attenuator Range
A
25
42
45
-
dB
AGC Settling Time to 1dB, 0dB to -40dB
C
25
-
-
10
µs
Output Impedance
C
25
-
250
-
Ω
Input Impedance
C
25
-
250
-
Ω
Gain Flatness, 20MHz Bandwidth
C
25
-
0.02
-
dB
Phase Shift vs AGC at 100MHz
C
25
-
-0.045
-
deg/dB
Power Down/Up Switching Speed (Note 3)
C
25
-
-
10
µs
NOTE:
7. A = Production Tested, B = Based on Characterization, C = By Design
4-7
HFA3763
AC Electrical Specifications, I/Q Up Converter and LO Individual Performance
VCC = 4.5V to 5.5V Unless Otherwise Specified
(NOTE 8)
TEST LEVEL
TEMP
(oC)
MIN
TYP
MAX
UNITS
2XLO Input Frequency Range (2 X Input Range)
B
25
20
-
800
MHz
2XLO Input Current Range
C
25
50
200
300
µARMS
2XLO Input Impedance
C
25
-
130
-
Ω
Buffered LO Output Voltage, Single Ended
A
25
80
100
-
mVP-P
Buffered LO Output Impedance
C
25
-
50
-
Ω
Quadrature IF Modulator Output Frequency Range
B
25
10
-
400
MHz
IF Modulator I/Q Input Frequency Range
C
25
-
-
30
MHz
IF Modulator Differential I/Q Max Input Voltage
C
25
-
2.25
-
VP-P
IF Modulator Differential I/Q Input Impedance
C
25
-
4
-
kΩ
IF Modulator Differential Input Capacitance
C
25
-
0.5
-
pF
IF Modulator I/Q Amplitude Balance
B
Full
-1.0
-
1.0
dB
IF Modulator I/Q Phase Balance at 105MHz
B
Full
-4
-
4
Degrees
IF Modulator I/Q Phase Balance at 400MHz
C
25
-4
-
4
Degrees
IF Modulator Carrier Suppression (LO Buffer Enabled)
C
25
28
30
-
dBc
IF Modulator Carrier Suppression (LO Buffer Disabled)
A
25
28
38
-
dBc
IF Modulator SSB Sideband Suppression at 105MHz
A
Full
25
41
-
dBc
A
25
33
41
-
dBc
IF Modulator SSB Sideband Suppression at 400MHz
C
25
28
-
-
dBc
IF Output Level Compression Point
C
25
-
1.0
-
VP-P
IF Modulator Intermodulation Suppression
B
25
26
-
-
dBc
PARAMETER
NOTE:
8. A = Production Tested, B = Based on Characterization, C = By Design
AC Electrical Specifications, TX Buffer Individual Performance
VCC = 4.5V to 5.5V Unless Otherwise Specified
(NOTE 9)
TEST LEVEL
TEMP
(oC)
MIN
TYP
MAX
UNITS
TX LPF Buffer Analog Input Range
A
25
-
500
-
mVP-P
TX LPF Buffer Analog/Digital Input Impedance
C
25
10
12.5
-
kΩ
PARAMETER
NOTE:
9. A = Production Tested, B = Based on Characterization, C = By Design
AC Electrical Specifications, RX/TX 5TH Order LPF Individual Performance
VCC = 4.5V to 5.5V Unless Otherwise Specified
(NOTE 10)
TEST LEVEL
TEMP
(oC)
MIN
TYP
MAX
UNITS
TX LPF 3dB Bandwidth, Sel0 = 0, Sel1 = 0
B
25
1.98
2.20
2.42
MHz
TX LPF 3dB Bandwidth, Sel0 = 1, Sel1 = 0
B
25
3.96
4.40
4.84
MHz
TX LPF 3dB Bandwidth, Sel0 = 0, Sel1 = 1
B
25
7.92
8.80
9.68
MHz
TX LPF 3dB Bandwidth, Sel0 = 1, Sel1 = 1
B
25
15.84
17.60
19.36
MHz
TX LPF Sel0, Sel1 Tuning Speed
B
25
-
-
1
µs
PARAMETER
4-8
HFA3763
AC Electrical Specifications, RX/TX 5TH Order LPF Individual Performance
VCC = 4.5V to 5.5V Unless Otherwise Specified (Continued)
(NOTE 10)
TEST LEVEL
TEMP
(oC)
MIN
TYP
MAX
UNITS
TX LPF 3dB Bandwidth Tuning
B
25
-20
-
+20
%
LPF Tune Nominal Resistance
B
25
-
787
-
Ω
TX/RX LPF Total Harmonic Distortion
B
25
-
1
-
%
LPF Output Impedance, Single Ended
C
25
-
50
-
Ω
PARAMETER
NOTE:
10. A = Production Tested, B = Based on Characterization, C = By Design
TABLE 1. LOW PASS FILTER PROGRAMING AND TUNING INFORMATION
MODE
LPF SEL1
LPF SEL0
f3dB
(NOMINAL RTUNE)
BW0
0
0
2.2MHz
BW1
0
1
4.4MHz
BW2
1
0
8.8MHz
BW3
1
1
17.6MHz
PERCENT OF NOMINAL FREQUENCY
f 3dBNOMINAL∗ 787
f TUNED 3dB = ---------------------------------------------------R TUNE
+20%
-20%
-30
-25 -20
-15
-10
-5
0
+5
+10 +15
[(787 - RTUNE)/RTUNE] * 100%
FREQUENCY
RTUNE
20% Low
984Ω
Nominal
787Ω
20% High
656Ω
FIGURE 1. TYPICAL f3dB vs RTUNE
4-9
+20 +25 +30
HFA3763
Thin Plastic Quad Flatpack Packages (LQFP)
Q80.14x14 (JEDEC MS-026BEC ISSUE C)
D
80 LEAD THIN PLASTIC QUAD FLATPACK PACKAGE
D1
-D-
-B-
-AE E1
e
PIN 1
SEATING
A PLANE
-H-
0.08
0.003
-C-
INCHES
MILLIMETERS
SYMBOL
MIN
MAX
MIN
MAX
NOTES
A
-
0.062
-
1.60
-
A1
0.002
0.005
0.05
0.15
-
A2
0.054
0.057
1.35
1.45
-
b
0.009
0.014
0.22
0.38
6
b1
0.009
0.012
0.22
0.33
-
D
0.626
0.634
15.90
16.10
3
D1
0.547
0.555
13.90
14.10
4, 5
E
0.626
0.634
15.90
16.10
3
E1
0.547
0.555
13.90
14.10
4, 5
L
0.018
0.029
0.45
0.75
N
80
80
e
0.026 BSC
0.65 BSC
7
Rev. 2 4/99
NOTES:
1. Controlling dimension: MILLIMETER. Converted inch
dimensions are not necessarily exact.
2. All dimensions and tolerances per ANSI Y14.5M-1982.
3. Dimensions D and E to be determined at seating plane -C- .
0.13
A-B S
0.005 M C
D S
b
11o-13o
0.020
0.008 MIN
b1
0o MIN
A2 A1
GAGE
PLANE
5. Dimensions D1 and E1 do not include mold protrusion.
Allowable protrusion is 0.25mm (0.010 inch) per side.
6. Dimension b does not include dambar protrusion. Allowable
dambar protrusion shall not cause the lead width to exceed
the maximum b dimension by more than 0.08mm (0.003 inch).
0.09/0.16
0.004/0.006
7. “N” is the number of terminal positions.
BASE METAL
WITH PLATING
L
0o-7o
4. Dimensions D1 and E1 to be determined at datum plane
-H- .
11o-13o
0.25
0.010
0.09/0.20
0.004/0.008
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Intersil semiconductor 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
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4-10
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