MB88344B

Manufacturer Part NumberMB88344B
Description8-Bit D/A Converter with Operational Amplifier Output Buffers
ManufacturerFUJITSU [Fujitsu Component Limited.]
MB88344B datasheet
 


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FUJITSU SEMICONDUCTOR
DATA SHEET
LINEAR IC
8-Bit D/A Converter
with Operational Amplifier Output Buffers
MB88344/88344B
DESCRIPTION
MB88344/MB88344B are 8-bit 36 channels D/A converters which have two reference voltages to use 36 channels
as 12 channels and 24 channels independently.
Each output channels has an operational amplifier output buffer and so large current drive is possible.
In the MB88344B, 6 Channels of DAC output (AO
can be changed by the address input from A0 and A1 pins.
Digital data are input to the devices in serial and it is controlled by CLK and LD pins. This configuration makes a
cascade connections between devices.
The MB88344/MB88344B are suitable for electronic volumes and replacement for potentiometers for adjustment,
in addition to normal D/A converter applications.
FEATURES
• Ultra low power consumption : Type. 1.1mW/channel
• Ultra small package
• Conversion method : R-2R resistor ladder
• On-chip operational amplifier output buffers : Max. +1.0/–1.0mA analog output sink/source current capability
• Analog data output range : 0 to V
• Two analog output reference voltage : Analog data can be output in different reference voltages.
PACKAGES
48 pin, Plastic SH-DIP
(DIP-48P-M01)
This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields. However, it is advised that normal precautions
be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit.
-AO
) have four data registers each and so, the analog output
31
36
[V]
CC
48 pin, Plastic QFP
(FPT-48P-M16)
DS04-13505-3E
(Continued)
48 pin, Plastic LQFP
(FPT-48P-M05)
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MB88344B Summary of contents

  • Page 1

    ... Operational Amplifier Output Buffers MB88344/88344B DESCRIPTION MB88344/MB88344B are 8-bit 36 channels D/A converters which have two reference voltages to use 36 channels as 12 channels and 24 channels independently. Each output channels has an operational amplifier output buffer and so large current drive is possible. In the MB88344B, 6 Channels of DAC output (AO can be changed by the address input from A0 and A1 pins ...

  • Page 2

    ... Separate supply voltge for digital block and analog block. • Direct control can be done from 3 V-system MCU: MB88344 : Input “H” Voltage = 0.5 V MB88344B : Input “H” Voltage = 2.1 V, Input “L” Voltage = 0.6 V • Max. 2.5 MHz serial data input • Silicon-gate CMOS process • ...

  • Page 3

    ... (DIP-48P-M01) MB88344/MB88344B MB88344B 4 16-bit LSB first SH-DIP-48P/LQFP-48P V CC AO31 AO30 AO29 AO28 NC AO27 AO26 AO25 AO24 AO23 AO22 AO21 AO20 AO19 AO18 AO17 AO16 AO15 AO14 AO13 AO12 ...

  • Page 4

    ... MB88344/MB88344B (Continued) AO28 AO29 AO30 AO31 DD2 NC V SS2 AO32 AO33 AO34 AO35 AO36 AO1 AO2 AO3 AO4 AO5 AO6 AO7 AO8 AO9 AO10 AO11 4 (TOP VIEW INDEX 48 13 ...

  • Page 5

    ... AO36 7 AO1 8 AO2 9 10 AO3 11 AO4 12 AO5 13 AO6 14 AO7 AO8 15 AO9 16 AO10 17 AO11 CLK GND (DIP-48P-M01) MB88344/MB88344B AO31 45 AO30 44 AO29 43 AO28 42 AO27 41 AO26 40 AO25 39 AO24 38 AO23 37 AO22 36 AO21 35 AO20 34 AO19 33 AO18 32 AO17 31 AO16 AO15 ...

  • Page 6

    ... DD2 SS2 DI, CLK, and LD pins should be fixed with “Low” level while no data are transferred. 6 Table 1 Pin Description MB88344B I/O LQFP SH-DIP LQFP Serial data input pin Shift clock input pin. Serial data input from DI pin are input to the internal shift register by a rising edge of the CLK signal ...

  • Page 7

    ... Register Register Register 8-bit 8-bit 8-bit Register Register Register MB88344, the Shift register is a 14-bit and the format is MSB-first. MB88344/MB88344B 16-bit Shift Register * Channel Decoder 8-bit R-2R Type 8-bit Register D/A converter 8-bit ...

  • Page 8

    ... MB88344/MB88344B DEVICE CONTROL The MB88344 has a 14-bit shift register, and MB88344B has a 16-bit shift register to store the digital data and channel selection. 1. 14-bit Shift Register (MB88344) Last D/A Converter D/A Converter Output – V ...

  • Page 9

    ... Channel Selection Input data D8 D9 D10 D11 D12 D13 MB88344/MB88344B Selected channel Deselected selected selected (address Deselected 9 ...

  • Page 10

    ... MB88344/MB88344B 2. O16-bit Shift Register (MB88344B) Last D15 D14 D13 D12 D11 D/A converter output D/A Converter Output D15 D14 D13 – V REF D10 Input data D12 D11 D10 ...

  • Page 11

    ... Don't Care Output Register Selection A1 A0 Output register selected 0 0 address address address address 3 MB88344/MB88344B Selected channel Deselected selected selected (address ...

  • Page 12

    ... MB88344/MB88344B TIMING CHART MB88344 MSB D12 D13 DI CLK LD D/A output MB88344B LSB CLK D/A output 12 D11 D2 D10 D13 D3 D14 - - - - - - - - - - - - - - AO LSB D0 MSB D15 ...

  • Page 13

    ... ANALOG OUTPUT VOLTAGE RANGE DAC Output V ,V DD1 DD2 V ,V SS1 SS2 DD1 DD2 GND SS1 SS2 MB88344/MB88344B OP-Amp. Output AOH CC CC D/A Output range GND V (=GND) AOL 13 ...

  • Page 14

    ... MB88344/MB88344B ABSOLUTE MAXIMUM RATINGS (See WARNING) Parameter Symbol V CC Power supply voltage V ,V DD1 DD2 Input voltage V IN Output voltage V OUT Power dissipation P D Operating ambient Ta temperature Storage temperature T STG WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. ...

  • Page 15

    ... Including the supply current to the operational amplifier block MB88344/MB88344B Condition I CLK = 1MHz, unloaded ILK IN CC For MB88344 V IL For MB88344B For MB88344 0 For MB88344B 2 –400 Value Unit Min. Typ. Max. — 3.5 8 ...

  • Page 16

    ... MB88344/MB88344B Analog Block (D/A Converters with Operational Amplifier Output Buffers) Parameter Symbol Supply current )** DD Min. analog output V AOL1 voltage 1 ( Min. analog output V AOL2 voltage 2 ( Min. analog output V AOL3 voltage 3 ( Min. analog output V AOL4 voltage 4 ( Min. analog output ...

  • Page 17

    ... Load strobe hold time t LDC DAC output setting time t LDD Data output delay time t DO DEFINITION OF NONLINEARITY ERROR Analog output voltage V * AOH V ** AOL #000 MB88344/MB88344B Condition — — — — — — — — — ** (Min.), 100 pF (Max.) ...

  • Page 18

    ... MB88344/MB88344B AC TEST CONDITIONS DAC Output Setting Time Device Under Test R AL INPUT/OUTPUT TIMING tcr 0 CLK 0 0 CKL 0 0 DCH LD AOx Previous Data DO 18 Data Output Delay Time Device Test Point Under Test tcf CKH 0 0 ...

  • Page 19

    ... MB88344/MB88344B Pattern inputs MB88344/MB88344B 0.6 0.4 0.2 0.0 0.2 0.4 0.6 Sink current Source current 0.6 0.4 0.2 0.0 0.2 0.4 0.6 Sink current Source current 0.6 0.4 0.2 0.0 0.2 0.4 0.6 Sink current Source current 5.0V 5. +25 C Source current V Sink current V CC DD1,2 AO1 DI CLK AO36 SS1,2 GND 0.8 1.0 [mA] 0.8 1.0 [mA] 0.8 1.0 [mA] *: Only MB88344B 19 ...

  • Page 20

    ... MB88344/MB88344B PACKAGE DIMENSIONS 48-pin Plastic SH-DIP (DIP-48P-M01) INDEX-1 INDEX-2 5.25(.207) MAX 3.00(.118) MIN +0.50 1.00 –0 +.020 .039 –0 1.778±0.18 (.070±.007) 1.778(.070) MAX 1994 FUJITSU LIMITED D48002S-3C +0.20 43.69 –0.30 +.008 1.720 –.012 0.51(.020)MIN 0.45±0.10 (.018±.004) 40.894(1.610)REF 13.80± ...

  • Page 21

    ... SQ –0.10 +.012 .472 –.004 INDEX 48 "A" LEAD No 0.80(.0315)TYP 0.30±0.06 (.012±.002) 0.15(.006) 1994 FUJITSU LIMITED F48026S-1C-1 C MB88344/MB88344B 2.70(.106)MAX (MOUNTING HEIGHT) 0.05(.002)MIN (STAND OFF) 24 8.80 13.60±0.40 (.346) (.535±.016) REF 13 +0.05 0.15 –0.01 +.002 .006 0.16(.006) M –.0004 "B" ...

  • Page 22

    ... MB88344/MB88344B (Continued) 48-pin Plastic LQFP (FPT-48P-M05) 9.00±0.20(.354±.008)SQ 7.00±0.10(.276±.004) INDEX 48 1 LEAD No. 0.50±0.08 (.0197±.0031) 0.10(.004) 1994 FUJITSU LIMITED F48013S-2C +0.20 1.50 –0.10 +.008 .059 –.004 25 24 5.50 8.00 (.217) (.315) REF NOM Details of "A" part ...

  • Page 23

    ... MB88344/MB88344B 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 211-88, Japan Tel: (044) 754-3763 Fax: (044) 754-3329 North and South America FUJITSU MICROELECTRONICS, INC. Semiconductor Division 3545 North First Street San Jose, CA 95134-1804, U ...