MAX5304CUA [MAXIM]
10-Bit Voltage-Output DAC in 8-Pin レMAX; 10位电压输出DAC， 8引脚μMAX
| 型号： | MAX5304CUA |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 10-Bit Voltage-Output DAC in 8-Pin レMAX |
| 文件： | 总12页 (文件大小：406K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1562; Rev 0; 10/99
10-Bit Voltage-Output DAC
in 8-Pin µMAX
General Description
Features
The MAX5304 combines a low-power, voltage-output,
10-bit digital-to-analog converter (DAC) and a precision
output amplifier in an 8-pin µMAX package. It operates
from a single +5V supply, drawing less than 280µA of
supply current.
ꢀ 10-Bit DAC with Configurable Output Amplifier
ꢀ +5V Single-Supply Operation
ꢀ Low Supply Current
0.28mA Normal Operation
2µA Shutdown Mode
The output amplifier’s inverting input is available to the
user, allowing specific gain configurations, remote
sensing, and high output-current capability. This makes
the MAX5304 ideal for a wide range of applications,
including industrial process control. Other features
include a software shutdown and power-on reset.
ꢀ Available in 8-Pin µMAX
ꢀ Power-On Reset Clears DAC Output to Zero
ꢀ SPI/QSPI/MICROWIRE Compatible
ꢀ Schmitt-Trigger Digital Inputs for Direct
The serial interface is SPI™/QSPI™/MICROWIRE™
compatible. The DAC has a double-buffered input,
organized as an input register followed by a DAC regis-
ter. A 16-bit serial word loads data into the input regis-
ter. The DAC register can be updated independently or
simultaneously with the input register. All logic inputs
are TTL/CMOS-logic compatible and buffered with
Schmitt triggers to allow direct interfacing to optocou-
plers.
Optocoupler Interface
Applications
_________________Ordering Information
Digital Offset and Gain Adjustment
PART
TEMP. RANGE
PIN-PACKAGE
Industrial Process Control
MAX5304CUA
MAX5304EUA
0°C to +70°C
8 µMAX
-40°C to +85°C
8 µMAX
Microprocessor-Controlled Systems
Portable Test Instruments
Remote Industrial Control
Functional Diagram
Pin Configuration
V
REF
GND
DD
TOP VIEW
FB
OUT
DAC
REGISTER
DAC
1
2
3
4
8
7
6
5
V
DD
OUT
CS
CONTROL
GND
REF
FB
MAX5304
INPUT
REGISTER
DIN
SCLK
CS
DIN
16-BIT
SHIFT
MAX5304
µMAX
REGISTER
SCLK
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
10-Bit Voltage-Output DAC
in 8-Pin µMAX
ABSOLUTE MAXIMUM RATINGS
DD
V
to GND...............................................................-0.3V to +6V
Operating Temperature Ranges
REF, OUT, FB to GND.................................-0.3V to (V
Digital Inputs to GND................................................-0.3V to +6V
Continuous Current into Any Pin....................................... 20mA
+ 0.3V)
MAX5304CUA...................................................0°C to +70°C
MAX5304EUA................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s)........................... ......+300°C
DD
Continuous Power Dissipation (T = +70°C)
A
8-Pin µMAX (derate 4.10mW/°C above+70°C)..........330mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 8, V = +5V 10ꢀ, V
= +2.5V, R = 5kΩ, C = 100pF, T = T
to T , unless otherwise noted. Typical values
MAX
DD
REF
L
A
MIN
L
are at T = +25°C. Output buffer connected in unity-gain configuration.)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
STATIC PERFORMANCE—ANALOG SECTION
Resolution
N
10
Bits
Differential Nonlinearity
DNL
Guaranteed monotonic
1.0
4
LSB
Integral Nonlinearity
(Note 1)
INL
LSB
Offset Error
V
0.3
6
8
mV
ppm/°C
LSB
OS
Offset-Error Tempco
Gain Error (Note 1)
TCV
OS
GE
-0.3
1
2
Gain-Error Tempco
ppm/°C
µV/V
Power-Supply Rejection Ratio
REFERENCE INPUT
Reference Input Range
Reference Input Resistance
PSRR
4.5V ≤ V
≤ 5.5V
800
DD
V
REF
0
V
DD
- 1.4
V
R
REF
Code dependent, minimum at code 1550 hex
= 0.67Vp-p
18
30
kΩ
MULTIPLYING-MODE PERFORMANCE
Reference -3dB Bandwidth
V
REF
650
-84
kHz
dB
Reference Feedthrough
Input code = all 0s, V
= 3.6Vp-p at 1kHz
REF
Signal-to-Noise Plus
SINAD
V
REF
= 1Vp-p at 25kHz, code = full scale
77
dB
Distortion Ratio
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Leakage Current
Input Capacitance
V
2.4
V
V
IH
V
I
0.8
0.5
IL
V
IN
= 0 or V
0.001
8
µA
pF
DD
IN
C
IN
2
_______________________________________________________________________________________
10-Bit Voltage-Output DAC
in 8-Pin µMAX
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 8, V = +5V 10ꢀ, V
= +2.5V, R = 5kΩ, C = 100pF, T = T
to T , unless otherwise noted. Typical values
MAX
DD
REF
L
A
MIN
L
are at T = +25°C. Output buffer connected in unity-gain configuration.)
A
PARAMETER
DYNAMICPERFORMANCE
Voltage Output Slew Rate
Output Settling Time
Output Voltage Swing
Current into FB
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SR
0.6
10
V/µs
µs
To 1/2LSB, V
= 2.5V
STEP
Rail-to-rail (Note 2)
0 to V
V
DD
0.001
20
0.1
µA
µs
Start-Up Time
Digital Feedthrough
5
nVs
CS = V , DIN = 100kHz
DD
POWER SUPPLIES
Supply Voltage
V
4.5
5.5
0.4
20
V
DD
Supply Current
I
(Note 3)
(Note 3)
0.28
4
mA
µA
µA
DD
Supply Current in Shutdown
Reference Current in Shutdown
0.001
0.5
TIMING CHARACTERISTICS (Figure 6)
SCLK Clock Period
t
100
40
ns
ns
ns
ns
CP
CH
SCLK Pulse Width High
SCLK Pulse Width Low
CS Fall to SCLK Rise Setup Time
t
t
40
CL
t
40
CSS
CSH
t
0
40
0
ns
ns
ns
ns
SCLK Rise to CS Rise Hold Time
DIN Setup Time
t
DS
DIN Hold Time
t
DH
t
t
40
SCLK Rise to CS Fall Delay
CS0
40
ns
ns
CS Rise to SCLK Rise Hold Time
CS Pulse Width High
CS1
t
100
CSW
Note 1: Guaranteed from code 3 to code 1023 in unity-gain configuration.
Note 2: Accuracy is better than 1LSB for V
= 8mV to (V
- 100mV), guaranteed by a power-supply rejection test at the end
OUT
DD
points.
Note 3: R = ∞, digital inputs at GND or V
.
L
DD
_______________________________________________________________________________________
3
10-Bit Voltage-Output DAC
in 8-Pin µMAX
__________________________________________Typical Operating Characteristics
(V
= +5V, R = 5kΩ, C = 100pF, T = +25°C, unless otherwise noted.)
L L
A
DD
REFERENCE VOLTAGE INPUT
FREQUENCY RESPONSE
SUPPLY CURRENT
vs. TEMPERATURE
INTEGRAL NONLINEARITY
vs. REFERENCE VOLTAGE
0.050
0.025
0
0
-4
400
380
360
340
320
300
280
260
240
220
200
R = ∞
L
-8
-12
-16
-20
-0.025
-0.050
0
500k
1M
1.5M 2M 2.5M
3M
-60
-20
20
60
100
140
0.4
1.2
2.0
2.8
3.6
4.4
REFERENCE VOLTAGE (V)
FREQUENCY (Hz)
TEMPERATURE (°C)
POWER-DOWN SUPPLY CURRENT
vs. TEMPERATURE
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
500
450
400
350
300
250
200
150
100
50
-50
-55
10
9
V
= +2.5V + 1Vp-p SINE
DC
REF
CODE = FULL SCALE
8
-60
-65
-70
-75
-80
-85
-90
7
6
5
4
3
2
1
0
-60
0
100
1
10
-20
20
60
100
140
4.0
4.4
4.8
5.2
5.6
6.0
FREQUENCY (kHz)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
REFERENCE FEEDTHROUGH
AT 1kHz
OUTPUT VOLTAGE
vs. LOAD
OUTPUT FFT PLOT
0
2.49980
2.49976
2.49972
2.49968
2.49964
2.49960
2.49956
0
-20
V
= +3.6Vp-p
REF
REFERENCE INPUT SIGNAL
CODE = FULL SCALE
= 1kHz
f
IN
-20
-40
-40
-60
-60
OUTPUT FEEDTHROUGH
-80
-80
-100
-100
0.5
1.6
2.7
3.8
4.9
6.0
0.5
1.6
2.7
3.8
4.9
6.0
0.1k
1k
10k
100k
1M
FREQUENCY (kHz)
LOAD (Ω)
FREQUENCY (kHz)
4
_______________________________________________________________________________________
10-Bit Voltage-Output DAC
in 8-Pin µMAX
____________________________Typical Operating Characteristics (continued)
(V
DD
= +5V, R = 5kΩ, C = 100pF, T = +25°C, unless otherwise noted.)
L L
A
MAJOR-CARRY TRANSITION
DIGITAL FEEDTHROUGH (f
= 100kHz)
SCLK
SCLK
2V/div
CS
5V/div
OUT
AC-COUPLED
10mV/div
OUT
AC-COUPLED
100mV/div
CODE = 512
10µs/div
2µs/div
CS = 5V
DYNAMIC RESPONSE
OUT
1V/div
GND
10µs/div
GAIN = +2V/V, SWITCHING FROM CODE 0 TO 1005
_______________________________________________________________________________________
5
10-Bit Voltage-Output DAC
in 8-Pin µMAX
_____________________Pin Description
FB
PIN
NAME
OUT
CS
FUNCTION
DAC Output Voltage
Chip-Select Input. Active low.
Serial-Data Input
OUT
1
R
R
R
2
2R
2R
2R
2R
MSB
2R
3
DIN
4
SCLK
Serial-Clock Input
5
6
7
8
FB
DAC Output Amplifier Feedback
Reference Voltage Input
Ground
REF
REF
GND
AGND
V
DD
Positive Power Supply
SHOWN FOR ALL 1s ON DAC
Figure 1. Simplified DAC Circuit Diagram
In shutdown mode, the MAX5304’s REF input enters a
high-impedance state with a typical input leakage cur-
rent of 0.001µA.
_______________Detailed Description
The MAX5304 contains a voltage-output digital-to-ana-
log converter (DAC) that is easily addressed using a
simple 3-wire serial interface. Each IC includes a 16-bit
shift register, and has a double-buffered input com-
posed of an input register and a DAC register (see the
Functional Diagram). In addition to the voltage output,
the amplifier’s negative input is available to the user.
The reference input capacitance is also code depen-
dent and typically ranges from 15pF (with an input
code of all 0s) to 50pF (at full scale).
The MAX873 +2.5V reference is recommended for use
with the MAX5304.
The DAC is an inverted R-2R ladder network that con-
verts a digital input (10 data bits plus 3 sub-bits) into an
equivalent analog output voltage in proportion to the
applied reference voltage. Figure 1 shows a simplified
circuit diagram of the DAC.
Output Amplifier
The MAX5304’s DAC output is internally buffered by a
precision amplifier with a typical slew rate of 0.6V/µs.
Access to the output amplifier’s inverting input provides
the user greater flexibility in output gain setting/signal
conditioning (see the Applications Information section).
Reference Inputs
The reference input accepts positive DC and AC sig-
nals. The voltage at the reference input sets the full-
scale output voltage for the DAC. The reference input
With a full-scale transition at the MAX5304 output, the
typical settling time to 1/2LSB is 10µs when loaded
with 5kΩ in parallel with 100pF (loads less than 2kΩ
degrade performance).
voltage range is 0V to (V
OUT
age source, as expressed in the following equation:
- 1.4V). The output voltage
DD
(V
) is represented by a digitally programmable volt-
The amplifier’s output dynamic responses and settling
performances are shown in the Typical Operating
Characteristics.
V
OUT
= (V · NB / 1024) Gain
REF
where NB is the numeric value of the DAC’s binary
Shutdown Mode
The MAX5304 features a software-programmable shut-
down that reduces supply current to a typical value of
4µA. Writing 111X XXXX XXXX XXXX as the input-con-
trol word puts the device in shutdown mode (Table 1).
input code (0 to 1023), V
is the reference voltage,
REF
and Gain is the externally set voltage gain.
The impedance at the reference input is code depen-
dent, ranging from a low value of 18kΩ when the DAC
has an input code of 1550 hex, to a high value exceed-
ing several gigohms (leakage currents) with an input
code of 0000 hex. Because the input impedance at the
reference pin is code dependent, load regulation of the
reference source is important.
6
_______________________________________________________________________________________
10-Bit Voltage-Output DAC
in 8-Pin µMAX
In shutdown mode, the amplifier’s output and the refer-
ence input enter a high-impedance state. The serial
interface remains active. Data in the input register is
retained in shutdown, allowing the MAX5304 to recall
the output state prior to entering shutdown. Exit shut-
down mode by either recalling the previous configura-
tion or updating the DAC with new data. When
powering up the device or bringing it out of shutdown,
allow 20µs for the outputs to stabilize.
SCLK
SK
MICROWIRE
PORT
MAX5304
DIN
CS
SO
I/O
Serial-Interface Configurations
The MAX5304’s 3-wire serial interface is compatible
with MICROWIRE (Figure 2) and SPI/QSPI (Figure 3).
The serial-input word consists of three control bits fol-
lowed by 10+3 data bits (MSB first), as shown in Figure
4. The 3-bit control code determines the MAX5304’s
response outlined in Table 1.
Figure 2. Connections for MICROWIRE
The MAX5304’s digital inputs are double buffered.
Depending on the command issued through the serial
interface, the input register can be loaded without
affecting the DAC register, the DAC register can be
loaded directly, or the DAC register can be updated
from the input register (Table 1).
+5V
SS
Serial-Interface Description
The MAX5304 requires 16 bits of serial data. Table 1
lists the serial-interface programming commands. For
certain commands, the 10+3 data bits are “don’t
cares.” Data is sent MSB first and can be sent in two 8-
bit packets or one 16-bit word (CS must remain low
until 16 bits are transferred). The serial data is com-
posed of three control bits (C2, C1, C0), followed by
the 10+3 data bits D9...D0, S2, S1, S0 (Figure 4). Set
the sub-bits (S2, S1, S0) to zero. The 3-bit control code
determines the register to be updated and the configu-
ration when exiting shutdown.
DIN
MOSI
SCK
SPI/QSPI
PORT
MAX5304
SCLK
CS
I/O
CPOL = 0, CPHA = 0
Figure 5 shows the serial-interface timing requirements.
The chip-select pin (CS) must be low to enable the
DAC’s serial interface. When CS is high, the interface
control circuitry is disabled. CS must go low at least
Figure 3. Connections for SPI/QSPI
t
before the rising serial-clock (SCLK) edge to prop-
CSS
erly clock in the first bit. When CS is low, data is
clocked into the internal shift register through the serial-
data input pin (DIN) on SCLK’s rising edge. The maxi-
mum guaranteed clock frequency is 10MHz. Data is
latched into the MAX5304 input/DAC register on CS’s
rising edge.
MSB..................................................................................LSB
16 Bits of Serial Data
Control
Bits
Data Bits
MSB............................LSB Sub-Bits
C2
C1
C0 D9 ...............................D0, S2, S1, S0
3 Control
Bits
10+3 Data Bits
Figure 4. Serial-Data Format
_______________________________________________________________________________________
7
10-Bit Voltage-Output DAC
in 8-Pin µMAX
Table 1. Serial-Interface Programming Commands
16-BITSERIALWORD
FUNCTION
D9.......................D0
C2 C1 C0
S2...S0
MSB
LSB
Load input register; DAC register immediately updated (also exit
shutdown).
X
X
X
0
0
1
0
1
0
10 bits of data
000
000
XXX
10 bits of data
XXXXXXXXXX
Load input register; DAC register unchanged.
Update DAC register from input register (also exit shutdown; recall
previous state).
1
0
1
1
1
1
XXXXXXXXXX
XXXXXXXXXX
XXX
XXX
Shutdown
No operation (NOP)
X = Don’t care
CS
COMMAND
EXECUTED
SCLK
DIN
1
8
9
16
D3 D2 D1 D0 S2 S1 S0
C1
C0 D9 D8 D7 D6 D5
C2
D4
Figure 5. Serial-Interface Timing Diagram
t
CSW
CS
t
t
CSH
t
t
CH
CP
CSS
t
t
CSO
CL
t
CS1
SCLK
t
DS
t
DH
DIN
Figure 6. Detailed Serial-Interface Timing Diagram
8
_______________________________________________________________________________________
10-Bit Voltage-Output DAC
in 8-Pin µMAX
DIN
SCLK
CS1
CS2
TO OTHER
SERIAL DEVICES
CS3
CS
CS
CS
MAX5304
MAX5304
MAX5304
SCLK
DIN
SCLK
DIN
SCLK
DIN
Figure 7. Multiple MAX5304s Sharing Common DIN and SCLK Lines
Figure 7 shows a method of connecting several
MAX5304s. In this configuration, the clock and the data
bus are common to all devices, and separate chip-
select lines are used for each IC.
Table 2. Unipolar Output Codes
DAC CONTENTS
ANALOG OUTPUT
MSB
LSB
1023
1024
Applications Information
11 1111 1111 (000)
10 0000 0001 (000)
10 0000 0000 (000)
01 1111 1111 (000)
00 0000 0001 (000)
+V
REF
Unipolar Output
For a unipolar output, the output voltage and the refer-
ence input have the same polarity. Figure 8 shows the
MAX5304 unipolar output circuit, which is also the typi-
cal operating circuit. Table 2 lists the unipolar output
codes.
513
+V
REF
1024
+V
512
REF
2
+V
REF
=
1024
®
Figure 9 illustrates a Rail-to-Rail output configuration.
511
+V
REF
This circuit shows the MAX5304 with the output amplifi-
er configured for a closed-loop gain of +2V/V to provide
a 0 to 5V full-scale range when a 2.5V reference is used.
1024
1
+V
REF
1024
Bipolar Output
The MAX5304 output can be configured for bipolar
operation using Figure 10’s circuit according to the fol-
lowing equation:
00 0000 0000 (000)
0V
Note: ( ) are for sub-bits.
Using an AC Reference
V
OUT
= V
[(2NB / 1024) - 1]
REF
In applications where the reference has AC signal com-
ponents, the MAX5304 has multiplying capability within
the reference input range specifications. Figure 11
shows a technique for applying a sine-wave signal to
the reference input where the AC signal is offset before
being applied to REF. The reference voltage must
never be more negative than GND.
where NB is the numeric value of the DAC’s binary
input code. Table 3 shows digital codes (offset binary)
and corresponding output voltages for Figure 10’s cir-
cuit.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
_______________________________________________________________________________________
9
10-Bit Voltage-Output DAC
in 8-Pin µMAX
The MAX5304’s total harmonic distortion plus noise
Table 3. Bipolar Output Codes
(THD+N) is typically less than -77dB (full-scale code),
given a 1Vp-p signal swing and input frequencies up to
25kHz. The typical -3dB frequency is 650kHz, as
shown in the Typical Operating Characteristics graphs.
DAC CONTENTS
ANALOG OUTPUT
MSB
LSB
511
512
+V
REF
11 1111 1111 (000)
Digitally Programmable Current Source
Figure 12’s circuit places an NPN transistor (2N3904 or
similar) within the op amp feedback loop to implement
a digitally programmable, unidirectional current source.
The output current is calculated with the following
equation:
1
10 0000 0001 (000)
10 0000 0000 (000)
01 1111 1111 (000)
+V
REF
512
0V
1
I
= (V
/ R)(NB / 1024)
OUT
REF
-V
REF
512
where NB is the numeric value of the DAC’s binary
input code, and R is the sense resistor shown in Figure
12.
511
00 0000 0001 (000)
-V
REF
512
512
512
00 0000 0000 (000)
-V
REF
= - V
REF
Note: ( ) are for sub-bits.
+5V
+5V
REF
REF
V
V
DD
DD
10k
10k
OUT
FB
FB
MAX5304
MAX5304
DAC
DAC
OUT
GND
GND
Figure 8. Unipolar Output Circuit
Figure 9. Unipolar Rail-to-Rail Output Circuit
10 ______________________________________________________________________________________
10-Bit Voltage-Output DAC
in 8-Pin µMAX
+5V
R1
R2
+5V
REF
26k
AC
MAX495
REFERENCE
INPUT
+5V
V
DD
500mVp-p
10k
V+
V-
FB
V
DD
REF
V
OUT
DAC
OUT
DAC
OUT
MAX5304
GND
MAX5304
GND
R1 = R2 = 10kΩ 0.1ꢀ
Figure 10. Bipolar Output Circuit
Figure 11. AC Reference Input Circuit
Power-Supply Considerations
On power-up, the input and DAC registers are cleared
(set to zero code). For rated MAX5304 performance,
+5V
REF
REF must be at least 1.4V below V . Bypass V
with
DD
DD
V
DD
V
L
a 4.7µF capacitor in parallel with a 0.1µF capacitor to
GND. Use short lead lengths, and place the bypass
capacitors as close to the supply pins as possible.
MAX5304
I
OUT
DAC
OUT
FB
2N3904
Grounding and Layout Considerations
Digital or AC transient signals on GND can create noise
at the analog output. Connect GND to the highest-qual-
ity ground available. Good PC board ground layout
minimizes crosstalk between the DAC output, reference
input, and digital input. Reduce crosstalk by keeping
analog lines away from digital lines. Wire-wrapped
boards are not recommended.
GND
R
Figure 12. Digitally Programmable Current Source
___________________Chip Information
TRANSISTOR COUNT: 3053
SUBSTRATE CONNECTED TO AGND
______________________________________________________________________________________ 11
10-Bit Voltage-Output DAC
in 8-Pin µMAX
Package Information
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 1999 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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SI9136_11
Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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SI9130CG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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SI9130LG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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SI9130_11
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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SI9137
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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SI9137DB
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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SI9137LG
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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VISHAY
SI9122E
500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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VISHAY
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