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Dual Channel Differential VDSL2 Line Driver
ISL1539
Features
The ISL1539 is to be used for high performance long reach
and high speed applications, including ADSL2, ADSL2+, and
VDSL2 20dBm.
• 450mA output drive capability
The ISL1539 is an integral part of the signal chain. The driver
has been optimized for flat gain response and reduced
harmonic distortion and noise in the bands of interest to
improve the overall signal to noise in the system.
• 44.1VP-P differential output drive into 100
• -85dBc THD @ 1MHz 2VP-P
• High slew rate of 1200V/µs differential
• Bandwidth - 80MHz @ AV = 10
• Current control pins
These drivers achieve a total harmonic distortion (THD)
measurement of typically -60dB MTPR @ 1.1MHz, while
consuming typically 10mA per DSL channel of total supply
current. This supply current can be set using a resistor on the
IADJ pin. Two other pins (C0 and C1) can also be used to adjust
supply current to one of four pre-set modes (full-IS, 3/4-IS,
1/2-IS, and full power-down). The ISL1539 operates on ±5V to
±15V supplies and retains its bandwidth and linearity over the
complete supply range.
• Channel separation
- 80dB @ 500kHz
- 75dB @ 1MHz
- 60dB @ 4MHz
The device is supplied in the small footprint (4mmx5mm) 24 Ld
QFN package and is specified for operation over the full
-40°C to +85°C temperature range.
• ADSL2++
ISL1539IRZ-T13
(Note 1)
1539 IRZ
24 Ld QFN
MDP0046
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pbfree material sets, molding compounds/die attach materials, and
100% matte tin plate plus anneal (e3 termination finish, which is
RoHS compliant and compatible with both SnPb and Pb-free
soldering operations). Intersil Pb-free products are MSL classified
at Pb-free peak reflow temperatures that meet or exceed the Pbfree requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information
page for ISL1539. For more information on MSL, please see tech
brief TB363
1
20 VOUTA
MDP0046
VINA+ 1
19 VINA-
VINB+ 2
18 VINB-
GND 3
17 VOUTB
THERMAL
PAD
IADJ 4
16 NC/SHIELD
NC 5
15 VOUTC
VINC+ 6
14 VINC-
VIND+ 7
13 VINDVOUTD 12
24 Ld QFN
21 VS+
1539 IRZ
VS+ 11
ISL1539IRZ-T7
(Note 1)
22 VS-
MDP0046
VS- 10
24 Ld QFN
C0CD 9
1539 IRZ
23 C0AB
PKG. DWG. #
ISL1539IRZ
June 21, 2013
FN7516.4
ISL1539
(24 LD QFN)
TOP VIEW
24 C1AB
PACKAGE
(Pb-free)
• VDSL2 20dBm
C1CD 8
PART
MARKING
Applications
Pin Configuration
Ordering Information
PART NUMBER
(Notes 2, 3)
• Pb-free (RoHS compliant)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2006-2008, 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
ISL1539
Absolute Maximum Ratings (TA = +25°C)
Thermal Information
VS+ to VS- Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +30V
VS+ Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +30V
VS- Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30V to +0.3V
Driver VIN+ Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS- to VS+
C0, C1 Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
IADJ Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +4V
Current into any Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mA
Output Current from Driver (Static) . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
ESD Rating
Human Body Model (Per MIL-STD-883 Method 3015.7) . . . . . . . . . 3kV
Machine Model (Per EIAJ ED-4701 Method C-111) . . . . . . . . . . . . 250V
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
24 Ld QFN Package . . . . . . . . . . . . . . . . . . .
38
N/A
Power Dissipation. . . . . . . . . . . . . . . . . . .See curves on page 8 and page 8
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . .-40°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted,
all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
PARAMETER
VS = ±12V, RF = 3kΩ, RL= 65Ω, IADJ = C0 = C1 = 0V, TA = +25°C. Amplifiers tested separately.
DESCRIPTION
CONDITIONS
MIN
(Note 4)
TYP
MAX
(Note 4)
UNIT
SUPPLY CHARACTERISTICS
IS+ (Full IS)
Positive Supply Current per Amplifier
All outputs at 0V, C0 = C1 = 0V, RADJ = 0
7.5
10
12.5
mA
IS- (Full IS)
Negative Supply Current per Amplifier
All outputs at 0V, C0 = C1 = 0V, RADJ = 0
-12.4
-9.9
-7.4
mA
IS+ (3/4 IS)
Positive Supply Current per Amplifier
All outputs at 0V, C0 = 5V, C1 = 0V, RADJ = 0
7.5
mA
IS- (3/4 IS)
Negative Supply Current per Amplifier
All outputs at 0V, C0 = 5V, C1 = 0V, RADJ = 0
-7.4
mA
IS+ (1/2 IS)
Positive Supply Current per Amplifier
All outputs at 0V, C0 = 0V, C1 = 5V, RADJ = 0
3.7
5.1
6.3
mA
IS- (1/2 IS)
Negative Supply Current per Amplifier
All outputs at 0V, C0 = 0V, C1 = 5V, RADJ = 0
-6.2
-5
-3.5
mA
IS+ (Power-down)
Positive Supply Current per Amplifier
All outputs at 0V, C0 = C1 = 5V, RADJ = 0
0.1
1.0
mA
IS- (Power-down)
Negative Supply Current per Amplifier
All outputs at 0V, C0 = C1 = 5V, RADJ = 0
IGND
GND Supply Current per Amplifier
All outputs at 0V
-1.0
0
mA
0.1
mA
INPUT CHARACTERISTICS
VOS
Input Offset Voltage
-2
+1
+2
mV
VOS
VOS Mismatch
-5
0
+5
mV
IB+
Non-Inverting Input Bias Current
-10
+10
µA
IB-
Inverting Input Bias Current
-75
+60
µA
IB-
IB- Mismatch
-15
+15
µA
ROL
Transimpedance
eN
0
3
MΩ
Input Noise Voltage
2.7
nV/Hz
iN
-Input Noise Current
19
pA/Hz
VIH
Input High Voltage
C0 and C1 inputs, with signal
1.8
V
C0 and C1 inputs, without signal
1.6
V
VIL
Input Low Voltage
C0 and C1 inputs
IIH0 , IIH1
Input High Current for C0, C1
C0 = 5V, C1 = 5V
IIL0, IIL1
Input Low Current for C0 or C1
C0 = 0V, C1 = 0V
2
0.8
V
10
40
µA
-15
-4.0
µA
FN7516.4
June 21, 2013
ISL1539
Electrical Specifications
PARAMETER
VS = ±12V, RF = 3kΩ, RL= 65Ω, IADJ = C0 = C1 = 0V, TA = +25°C. Amplifiers tested separately. (Continued)
DESCRIPTION
CONDITIONS
MIN
(Note 4)
TYP
MAX
(Note 4)
UNIT
OUTPUT CHARACTERISTICS
VOUT
Loaded Output Swing
(RL Single-ended to GND)
RL = 100Ω
RL = 50Ω(+)
10.65
RL = 50Ω (-)
RL = 25Ω (+)
±11.1
V
10.95
V
-10.95
9.8
-10.55
10.7
V
V
RL = 25Ω (-)
-10.7
450
mA
-9.2
V
IOL
Linear Output Current
AV = 5, RL = 10Ω f = 100kHz, THD = -60dBc (10Ω
single-ended)
IOUT
Output Current
VOUT = 1V, RL = 1Ω
1
A
DYNAMIC PERFORMANCE
BW
-3dB Bandwidth
AV = +10
80
MHz
HD2 at 200kHz
2nd Harmonic Distortion at 200kHz
fC = 200kHz, RL = 100Ω, VOUT = 2VP-P
-90
dBc
HD3 at 200kHz
3rd Harmonic Distortion at 200kHz
fC = 200kHz, RL = 100Ω, VOUT = 2VP-P
-94
dBc
THD at 200kHz
Total Harmonic Distortion at 200kHz
fC = 200kHz, RL = 100Ω, VOUT = 2VP-P
-89
dBc
HD2 at 1MHz
2nd Harmonic Distortion at 1MHz
fC = 1MHz, RL = 100ΩVOUT = 2VP-P
-86
dBc
fC = 1MHz, RL = 25ΩVOUT = 2VP-P
-80
dBc
fC = 1MHz, RL = 100ΩVOUT = 2VP-P
-90
dBc
fC = 1MHz, RL = 25ΩVOUT = 2VP-P
-75
dBc
HD3 at 1MHz
3rd Harmonic Distortion at 1MHz
THD at 1MHz
Total Harmonic Distortion at 1MHz
fC = 1MHz, RL = 100Ω VOUT = 2VP-P
-85
dBc
MTPR
Multi-Tone Power Ratio
26kHz to 1.1MHz, RLINE = 100Ω,
PLINE = 20.4dBM
-70
dBc
SR
Slewrate (single-ended)
VOUT from -8V to +8V measured at ±4V
500
V/µs
NOTE:
4. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
3
FN7516.4
June 21, 2013
ISL1539
Pin Descriptions
ISL1539IR
(QFN24)
PIN NAME
1
VINA+
FUNCTION
CIRCUIT
Amplifier A non-inverting input
VS+
VSCIRCUIT 1
2
VINB+
3
GND
4
IADJ (Note 5)
Amplifier B non-inverting input
(Reference Circuit 1)
Ground connection
Supply current control pin for both
DSL channels #1 and #2
VS+
IADJ
VS-
GND
CIRCUIT 2
5
NC
Not connected
6
VINC+
Amplifier C non-inverting input
(Reference Circuit 1)
7
VIND+
Amplifier D non-inverting input
(Reference Circuit 1)
8
C1CD (Note 6)
DSL channel #2 current control pin
VS+
VS+
1K
COAB
VS-
IADJ
CIRCUIT 3
9
C0CD (Note 6)
10, 22
VS-
Negative supply
11, 21
VS+
Positive supply
12
VOUTD
Amplifier D output
(Reference Circuit 1)
13
VIND-
Amplifier D inverting input
(Reference Circuit 1)
14
VINC-
Amplifier C inverting input
(Reference Circuit 1)
15
VOUTC
Amplifier C output
(Reference Circuit 1)
16
NC/SHIELD
17
VOUTB
Amplifier B output
(Reference Circuit 1)
4
DSL channel #2 current control pin
(Reference Circuit 3)
FN7516.4
June 21, 2013
ISL1539
Pin Descriptions (Continued)
ISL1539IR
(QFN24)
PIN NAME
18
VINB-
Amplifier B inverting input
(Reference Circuit 1)
19
VINA-
Amplifier A inverting input
(Reference Circuit 1)
20
VOUTA
Amplifier A output
(Reference Circuit 1)
23
C0AB (Note 7)
DSL channel #1 current control pin
(Reference Circuit 3)
24
C1AB (Note 7)
DSL channel #1 current control pin
(Reference Circuit 3)
FUNCTION
CIRCUIT
NOTES:
5. IADJ controls bias current (IS) setting for both DSL channels.
6. Amplifiers C and D comprise DSL channel #2. C0CD and C1CD control IS settings for DSL channel #2.
7. Amplifiers A and B comprise DSL channel #1. C0AB and C1AB control IS settings for DSL channel #1.
Typical Performance Curves
VS = ±12V
CL = 1.8pF
AV = +12.4
RL = 100Ω
RF = 2kΩ
VS = ±12V
CL = 1.8pF
AV = +12.4
RL = 100Ω
RF = 2kΩ
RF = 3kΩ
RF = 3kΩ
RF = 5kΩ
RF = 5kΩ
FIGURE 1. FREQUENCY RESPONSE FOR VARIOUS RF (FULL
POWER MODE)
VS = ±12V
RF = 5kΩ
AV = +12.4
RL = 100Ω
CL = 100pF
FIGURE 2. FREQUENCY RESPONSE FOR VARIOUS RF (HALF
POWER MODE)
VS = ±12V
AV = +12.4
CL = 27pF
RL = 100Ω
RF = 3.48kΩ
CL = 47pF
CL = 22pF
RF = 4.99kΩ
CL = 1.8pF
FIGURE 3. FREQUENCY RESPONSE FOR VARIOUS CL
(FULL POWER MODE)
5
FIGURE 4. COMMON MODE FREQUENCY RESPONSE FOR
VARIOUS RF (FULL POWER MODE)
FN7516.4
June 21, 2013
ISL1539
Typical Performance Curves
(Continued)
VS = ±12V
RF = 3kΩ
AV = +12.4
RL = 100Ω
VS = ±12V
RF = 5kΩ
AV = +12.4
RL = 100Ω
2ND HD
2ND HD
3RD HD
3RD HD
FIGURE 5. 200KHz 2ND AND 3RD HARMONIC DISTORTION vs
VOLTAGE OUTPUT (FULL POWER MODE)
VS = ±12V
RF = 3kΩ
AV = +12.4
RL = 100Ω
FIGURE 6. 200kHz 2ND AND 3RD HARMONIC DISTORTION vs
VOLTAGE OUTPUT (HALF POWER MODE)
VS = ±12V
RF = 5kΩ
AV = +12.4
RL = 100Ω
3RD HD
2ND HD
2ND HD
3RD HD
FIGURE 7. 1MHz 2ND AND 3RD HARMONIC DISTORTION vs
OUTPUT VOLTAGE (FULL POWER MODE)
FIGURE 8. 1MHz 2ND AND 3RD HARMONIC DISTORTION vs
OUPUT VOLTAGE (HALF POWER MODE)
VS = ±12V
RF = 5kΩ
AV = +12.4
RL = 100Ω
VS = ±12V
RF = 3kΩ
AV = +12.4
RL = 100Ω
3RD HD
3RD HD
2ND HD
FIGURE 9. 3.75MHz 2ND AND 3RD HARMONIC DISTORTION vs
OUTPUT VOLTAGE (FULL POWER MODE)
6
2ND HD
FIGURE 10. 3.75MHz 2ND AND 3RD HARMONIC DISTORTION vs
OUTPUT VOLTAGE (HALF POWER MODE)
FN7516.4
June 21, 2013
ISL1539
Typical Performance Curves
(Continued)
VS = ±12V
RF = 3kΩ
AV = +12.4
RL = 100Ω
VS = ±12V
RF = 3kΩ
AV = +12.4
RL = 100Ω
3.75MHz
10MHz
3RD HD
1MHz
2ND HD
200kHz
FIGURE 11. 10MHz 2ND AND 3RD HARMONIC DISTORTION vs
OUTPUT VOLTAGE (FULL POWER MODE)
RADJ = 475Ω
VS = ±12V
FULL +IS
RADJ = 2kΩ
±IS (mA)
VS = ±12V
RF = 3kΩ
AV = +12.4
RL = 100Ω
FIGURE 12. TOTAL HARMONIC DISTORTION FOR VARIOUS
FREQUENCIES (FULL POWER MODE)
RADJ = 0Ω
3/4 +IS
FULL -IS
1/2 +IS
3/4 -IS
1/2 -IS
RADJ ()
FIGURE 13. FREQUENCY RESPONSE FOR VARIOUS RADJ
FIGURE 14. SUPPLY CURRENT vs RADJ FOR VARIOUS POWER
MODE
CHANNEL SEPARATION (dB)
0
-10
-20
-30
AB ≥ CD
-40
-50
-60
-70
CD ≥ AB
-80
-90
-100
100k
1M
10M
FREQUENCY (Hz)
100M
FIGURE 15. CHANNEL SEPARATION vs FREQUENCY
7
FIGURE 16. TRANSIMPEDANCE
FN7516.4
June 21, 2013
ISL1539
Typical Performance Curves
(Continued)
JEDEC JESD51-7 HIGH EFFECTIVE
THERMAL CODCTIVITY TEST BOARD
VS = ±12V
RL = 1kΩ
4.5
POWER DISSIPATION (W)
PSRR-
PSRR+
4.0
3.5
3.0
2.5
3.378W
2.0
1.5
1.0
QFN-24
JA = +38°C/W
0.5
0.0
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
FIGURE 17. PSRR vs FREQUENCY
FIGURE 18. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
POWER DISSIPATION (W)
1.2
JEDEC JESD51-3 LOW EFFECTIVE
THERMAL CODCTIVITY TEST BOARD
1.0
0.8
893mW
0.6
QFN-24
0.4
0.2
0.0
0
JA = +140°C/W
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
FIGURE 19. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE
8
FN7516.4
June 21, 2013
ISL1539
Application Information
Power Supplies and Dissipation
The ISL1539 consists of two sets of high-power line driver
amplifiers that can be connected for full duplex differential line
transmission. The amplifiers are designed to be used with signals
up to 30MHz and produce low distortion levels. A typical interface
circuit is shown in Figure 20.
Due to the high power drive capability of the ISL1539, much
attention needs to be paid to power dissipation. The power that
needs to be dissipated in the ISL1539 has two main contributors.
The first is the quiescent current dissipation. The second is the
dissipation of the output stage.
DRIVER
INPUT
+
-
ROUT
The quiescent power in the ISL1539 is not constant with varying
outputs. In reality, 7mA of the 15mA needed to power the drivers
is converted in to output current. Therefore, in the equation below
we should subtract the average output current, IO, or 7mA,
whichever is the lowest. We’ll call this term IX.
LINE +
RF
RG
ZLINE
RF
ROUT
+
P Dquiescent = V S   I S – 2I X 
(EQ. 1)
LINE RF
R
+
RIN
RECEVIE
OUT+
RECEVIE
AMPLIFIERS
RECEVIE
OUT-
Therefore, we can determine a quiescent current with
Equation 1:
where:
• VS is the supply voltage (VS+ to VS-)
+
-
R
RF
RIN
FIGURE 20. TYPICAL LINE INTERFACE CONNECTION
The amplifiers are wired with one in positive gain and the other in
a negative gain configuration to generate a differential output for
a single-ended input. They will exhibit very similar frequency
responses for gains of three or greater and thus generate very
small common-mode outputs over frequency, but for low gains
the two drivers RF's need to be adjusted to give similar frequency
responses. The positive-gain driver will generally exhibit more
bandwidth and peaking than the negative-gain driver.
If a differential signal is available to the drive amplifiers, they
may be wired so:
• IS is the maximum quiescent supply current (IS+ + IS-)
• IX is the lesser of IO or 7mA (generally IX = 7mA)
The dissipation in the output stage has two main contributors.
Firstly, we have the average voltage drop across the output
transistor and secondly, the average output current. For minimal
power dissipation, the user should select the supply voltage and
the line transformer ratio accordingly. The supply voltage should
be kept as low as possible, while the transformer ratio should be
selected so that the peak voltage required from the ISL1539 is
close to the maximum available output swing. There is a trade
off, however, with the selection of transformer ratio. As the ratio
is increased, the receive signal available to the receivers is
reduced.
Once the user has selected the transformer ratio, the dissipation
in the output stages can be selected with Equation 2:
VS
P Dtransistors = 2  I O   ------- – V O 
 2

(EQ. 2)
where:
+
-
2RG
• VS is the supply voltage (VS+ to VS-)
RF
RF
+
FIGURE 21. DRIVERS WIRED FOR DIFFERENTIAL INPUT
Each amplifier has identical positive gain connections, and
optimum common-mode rejection occurs. Further, DC input
errors are duplicated and create common-mode rather than
differential line errors.
9
• VO is the average output voltage per channel
• IO is the average output current per channel
The overall power dissipation (PDISS) is obtained by adding
PDquiescent and PDtransistor.
Then, the JA requirement needs to be calculated. This is done
using Equation 3:
 T JUNCT – T AMB 
 JA = ------------------------------------------------P DISS
(EQ. 3)
FN7516.4
June 21, 2013
ISL1539
where:
Power Supplies
• TJUNCT is the maximum die temperature (+150°C)
The power supplies should be well bypassed close to the
ISL1539. A 3.3µF tantalum capacitor for each supply works well.
Since the load currents are differential, they should not travel
through the board copper and set up ground loops that can
return to amplifier inputs. Due to the class AB output stage
design, these currents have heavy harmonic content. If the
ground terminal of the positive and negative bypass capacitors
are connected to each other directly and then returned to circuit
ground, no such ground loops will occur. This scheme is
employed in the layout of the EL1537 demonstration board, and
documentation can be obtained from the factory.
• TAMB is the maximum ambient temperature
• PDISS is the dissipation calculated above
• JA is the junction to ambient thermal resistance for the
package when mounted on the PCB
This JA value is then used to calculate the area of copper
needed on the board to dissipate the power.
The IRE and QFN power packages are designed so that heat may
be conducted away from the device in an efficient manner. To
disperse this heat, the bottom diepad is internally connected to
the mounting platform of the die. Heat flows through the diepad
into the circuit board copper, then spreads and convects to air.
Thus, the ground plane on the component side of the board
becomes the heatsink. This has proven to be a very effective
technique. JA of +30°C/W can be achieved.
Single Supply Operation
The ISL1539 can also be powered from a single supply voltage.
When operating in this mode, the GND pins can still be
connected directly to GND. To calculate power dissipation, the
equations in the previous section should be used, with VS equal
to half the supply rail.
Power Control Function
The ISL1539 contains two forms of power control operation. Two
digital inputs, C0 and C1, can be used to control the supply
current of the ISL1539 drive amplifiers. As the supply current is
reduced, the ISL1539 will start to exhibit slightly higher levels of
distortion and the frequency response will be limited. The four
power modes of the ISL1539 are set up as shown in the table1
below.
TABLE 1. POWER MODES OF THE EL15371
C1
C0
0
0
IS Full Power Mode
Output Loading
0
1
3/4-IS Power Mode
While the drive amplifiers can output in excess of 450mA
transiently, the internal metallization is not designed to carry
more than 75mA of steady DC current and there is no
current-limit mechanism. This allows safely driving rms
sinusoidal currents of 2mAx75mA, or 150mA. This current is
more than that required to drive line impedances to large output
levels, but output short circuits cannot be tolerated. The series
output resistor will usually limit currents to safe values in the
event of line shorts. Driving lines with no series resistor is a
serious hazard.
1
0
1/2-IS Power Mode
1
1
Power Down
Operation
For additional products, see www.intersil.com/en/products.html
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in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
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10
FN7516.4
June 21, 2013
ISL1539
QFN (Quad Flat No-Lead) Package MDP0046
QFN (QUAD FLAT NO-LEAD) PACKAGE FAMILY
Family
(COMPLIANT TO JEDEC MO-220)
MILLIMETERS
A
SYMBOL QFN44 QFN38
D
N
(N-1)
(N-2)
B
1
2
3
PIN #1
I.D. MARK
E
(N/2)
2X
0.075 C
2X
0.075 C
N LEADS
TOP VIEW
0.10 M C A B
(N-2)
(N-1)
N
b
L
A
0.90
0.90
1
2
3
TOLERANCE
NOTES
0.90
±0.10
-
A1
0.02
0.02
0.02
0.02
+0.03/-0.02
-
b
0.25
0.25
0.23
0.22
±0.02
-
c
0.20
0.20
0.20
0.20
Reference
-
D
7.00
5.00
8.00
5.00
Basic
-
D2
5.10
3.80
5.80 3.60/2.4
8
Reference
8
E
7.00
7.00
8.00
E2
5.10
5.80
5.80 4.60/3.4
0
e
0.50
0.50
0.80
0.50
6.00
Basic
-
Reference
8
Basic
-
L
0.55
0.40
0.53
0.50
±0.05
-
N
44
38
32
32
Reference
4
ND
11
7
8
7
Reference
6
NE
11
12
8
9
Reference
5
PIN #1 I.D.
3
QFN32
0.90
MILLIMETERS
SYMBOL QFN28 QFN24
QFN20
QFN16
TOLERANCE
NOTES
A
0.90
0.90
0.90
0.90
0.90
±0.10
-
A1
0.02
0.02
0.02
0.02
0.02
+0.03/
-0.02
-
b
0.25
0.25
0.30
0.25
0.33
±0.02
-
c
0.20
0.20
0.20
0.20
0.20
Reference
-
(E2)
(N/2)
NE 5
7
(D2)
BOTTOM VIEW
0.10 C
e
C
SEATING
PLANE
0.08 C
N LEADS
& EXPOSED PAD
D
4.00
4.00
5.00
4.00
4.00
Basic
-
D2
2.65
2.80
3.70
2.70
2.40
Reference
-
E
5.00
5.00
5.00
4.00
4.00
Basic
-
E2
3.65
3.80
3.70
2.70
2.40
Reference
-
e
0.50
0.50
0.65
0.50
0.65
Basic
-
L
0.40
0.40
0.40
0.40
0.60
±0.05
-
N
28
24
20
20
16
Reference
4
ND
6
5
5
5
4
Reference
6
NE
8
7
5
5
4
Reference
5
Rev 11 2/07
SEE DETAIL "X"
NOTES:
1. Dimensioning and tolerancing per ASME Y14.5M-1994.
2. Tiebar view shown is a non-functional feature.
SIDE VIEW
3. Bottom-side pin #1 I.D. is a diepad chamfer as shown.
4. N is the total number of terminals on the device.
(c)
C
5. NE is the number of terminals on the “E” side of the package
(or Y-direction).
2
A
(L)
A1
N LEADS
DETAIL X
6. ND is the number of terminals on the “D” side of the package
(or X-direction). ND = (N/2)-NE.
7. Inward end of terminal may be square or circular in shape with radius
(b/2) as shown.
8. If two values are listed, multiple exposed pad options are available. Refer
to device-specific datasheet.
11
FN7516.4
June 21, 2013
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