MB88345PF

Manufacturer Part NumberMB88345PF
DescriptionD/A Converter for Digital Tuning (24-channel, 8-bit, on-chip OP amp)
ManufacturerFUJITSU [Fujitsu Component Limited.]
MB88345PF datasheet
 


1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
Page 1/14

Download datasheet (137Kb)Embed
Next
FUJITSU SEMICONDUCTOR
DATA SHEET
Linear IC Converter
CMOS
D/A Converter for Digital Tuning
(24-channel, 8-bit, on-chip OP amp)
MB88345
DESCRIPTION
The MB88345 incorporates twenty-four 8-bit D/A converter modules.
It also contains an output amplifier, allowing driving at large current.
Since the inputs data in serial mode, it requires only three control lines for data input and can be cascaded.
The MB88345 is suitable for applications such as electronic volume controls and replacement of semi-fixed
resistors in tuning systems.
FEATURES
• Ultra-low power consumption (1.1 mW/ch : typical)
• Compact space-saving package (QFP-32)
• Contains 24-channel R-2R type 8-bit D/A converter
• On-chip analog output amps (sink current max. 1.0 mA, source current max. 1.0 mA)
• Analog output range : 0 V to V
• Two separate power supply/ground lines for MCU interface block/operational amplifier output buffer block and
D/A converter block
• Serial data input : maximum operating speed 2.5 MHz
• CMOS process
PACKAGE
CC
32-pin Plastic QFP
(FPT-32P-M21)
DS04-13508-2E

MB88345PF Summary of contents

  • Page 1

    FUJITSU SEMICONDUCTOR DATA SHEET Linear IC Converter CMOS D/A Converter for Digital Tuning (24-channel, 8-bit, on-chip OP amp) MB88345 DESCRIPTION The MB88345 incorporates twenty-four 8-bit D/A converter modules. It also contains an output amplifier, allowing driving at large current. Since ...

  • Page 2

    MB88345 PIN ASSIGNMENT LD CLK DI GND V SS AO1 AO2 AO3 PIN DESCRIPTION Pin No. Pin name I CLK LD AO1 to AO3 ...

  • Page 3

    BLOCK DIAGRAM DI CLK 8-bit register R-2R type 8-bit D/A converter V CC GND AO1 14-bit shift register D10 D11 D12 D13 Channel decoder ...

  • Page 4

    MB88345 DATA CONFIGURATION The MB88345 has a 14-bit shift register for chip control. The 14-bit shift register must be used to set up data in the configuration shown below. Note : The data configuration has a total of 14 bits, ...

  • Page 5

    TIMING CHART MSB D13 D12 D11 DI CLK LD D/A output ANALOG OUTPUT VOLTAGE RANGE R-2R ladder output GND V SS D10 amp. output D/A output ...

  • Page 6

    MB88345 ABSOLUTE MAXIMUM RATINGS Parameter Symbol V CC Power supply voltage V DD Input voltage V IN Output voltage V OUT Power consumption P D Operating temperature Ta Storage temperature Tstg * : WARNING: Semiconductor devices ...

  • Page 7

    ELECTRICAL CHARACTERISTICS 1. DC Characteristics (1) Digital block Parameter Symbol Power supply voltage V CC Power supply current I CC Input leak current I ILK “L” level input voltage V IL “H” level input voltage V IH “L” level output ...

  • Page 8

    MB88345 (3) Analog block (2) Parameter Symbol Pin name Output minimum V AOL1 voltage 1 Output minimum V AOL2 voltage 2 Output minimum V AOL3 voltage 3 Output minimum V AOL4 voltage 4 Output minimum V AOL5 voltage 5 AO1 ...

  • Page 9

    AC Characteristics Parameter “L” level clock pulse width “H” level clock pulse width Clock rise time Clock fall time Data setup time Data hold time Load setup time Load hold time “H” level load pulse width Data output delay ...

  • Page 10

    MB88345 • Input/output timing CLK DI LD D/A output DO input Note : Digital input decision level : 50% and 20 Digital output decision level : 80% and 20 Analog output decision level : 90% and ...

  • Page 11

    V vs. I CHARACTERISTICS EXAMPLE AO AO MB88345 Pattern input (mV) #FF Setting 5,000 4,980 4,960 4,940 4,920 4,900 4,880 4,860 4,840 4,820 4,800 1.0 0.8 (mV) #80 Setting 2,600 2,580 2,560 2,540 2,520 2,500 2,480 2,460 2,440 2,420 2,400 ...

  • Page 12

    ... MB88345 ORDERING INFORMATION Part number MB88345PF 12 Package 32 pin Plastic QFP (FPT-32P-M21) Remarks ...

  • Page 13

    PACKAGE DIMENSION 32-pin, Plastic QFP (FPT-32P-M21) 9.00±0.20(.354±.008)SQ 24 7.00±0.10(.276±.004) PIN INDEX 32 1 0.80(.0315)TYP 0.30±0.10 (.012±.004) 1994 FUJITSU LIMITED F32032S-1C +0.20 1.50 –0.10 +.008 .059 –.004 "A" +0.05 0.127 –0.02 0.16(.006) M +.002 ...

  • Page 14

    MB88345 FUJITSU LIMITED For further information please contact: Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices KAWASAKI PLANT, 4-1-1, Kamikodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa 211-8588, Japan Tel: +81-44-754-3763 Fax: +81-44-754-3329 http://www.fujitsu.co.jp/ North and South America FUJITSU MICROELECTRONICS, INC. 3545 ...