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FUJITSU SEMICONDUCTOR DATA SHEET
DS04-28308-3E
ASSP
2-Channel 8-BIT D/A Converter
MB40968/40968V
s DESCRIPTION
The Fujitsu MB40968/40968V is a 2-channel 8-bit high speed digital to analog converter for video frequency band fabricated by Fujitsu Advanced Bipolar Technology. This is suitable for YC signal processing of digital VCR.
s FEATURES
* * * * * Resolution: 8-bits Linearity error: 0.2% (max.) Maximum conversion rate: 30 MHz (Min.) Analog output voltage range: 3 to 5V Reference voltage output: MB40968: Resistance-type potential divider output (3/5 x VCCA) MB40968V: Band gap reference output (VCCA - 2 [V]) * Digital input voltage: * Single power supply voltage: * Power dissipation: TTL level +5.0 [V] 270 [mW] (typ)
s PACKAGE
Plastic DIP 28 pin ,
Plastic FTP, 28 pin
(DIP-28P-M03)
(FTP-28P-M01)
MB40968/40968V
s PIN ASSIGNMENT
(TOP VIEW) A5 A6 A7 A 8(LSB) CLKA B 1(MSB) B2 B3 B4 B5 B6 B7 B 8(LSB) CLKB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 A4 A3 A2 A 1(MSB) V CCD V CCA A OUT A.GND B OUT V CCA V RIN V ROUT COMP D.GND
2
MB40968/40968V
s PIN DESCRIPTION
Pin Number 25 to 28 1 to 4 6 to 13 5 14 24 19, 23 15 21 Symbol A1 to A8 B1 to B8 CLKA CLKB VCCD VCCA D-GND A-GND I/O I I I I -- -- -- -- Descriptions A-channel Digital Signal Inputs: A1 (MSB), A8 (LSB) B- channel Digital Signal Inputs: B1 (MSB), B8 (LSB) A-channel Clock Input B-channel Clock Input Power Supply for Digital Circuit Power Supply for Analog Circuit, two pins (19,23) should be used. Ground for Digital Circuit Ground for Analog Circuit Terminal for reference voltage input. Zero scale voltage of analog output is specified applying any voltage to this terminal. Input reference voltage should be 2.7 to 4.3V and, VCCA - VRIN 2.2V Terminal for reference voltage output by resistance-type potential divider. Analog output of "VCCA to 3/5 x VCCA" is supplied connecting this terminal with VRIN terminal. Terminal for reference voltage output consists of Band Gap reference. This terminal supplies the voltage of "VCCA to VCCA - 2V". 2V output is maintained connecting this terminal with VRIN, even if the power supply fluctuates frequently. Terminal for phase compensation capacitance; Capacitance of 1 F or more should be inserted between COMP and AGND. A-channel Analog Signal Output B-channel Analog Signal Output
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VRIN
I
MB40968 VROUT 17 MB40968V VROUT
O
O
16 22 20
COMP AOUT BOUT
-- O O
3
MB40968/40968V
s BLOCK DIAGRAM
CLK A
A 1(MSB) A2 A3 A4 A5 A6 A7 A 8(LSB) (A) (A) (A) (A) Input Buffer Master Slave F-F Buffer 8 8 Current Switch
A-OUT
8
CLK B
B 1(MSB) B2 B3 B4 B5 B6 B7 B 8(LSB) (B) (B) (B) (B) Input Buffer Master Slave F-F Buffer 8 8 Current Switch
B-OUT
8
Reference Resistor AMP. Reference Voltage
D.GND
A.GND
V ROUT
V RIN
COMP
V CCD
V CCA
4
MB40968/40968V
s ABSOLUTE MAXIMUM RATINGS
Rating Power supply voltage Supply voltage difference Digital input voltage Storage temperature Symbol VCCA, VCCD VCCD - VCCA VID TSTG Value -0.5 to +7.0 1.5 -0.5 to +7.0 -55 to +125 Unit V V V C
Precautions: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
s RECOMMENDED OPERATING CONDITIONS
Parameter Power supply voltage Analog reference voltage High level digital Input voltage Low level digital input voltage Clock frequency Data set up time Data hold time High level clock pulse width Low level clock pulse width Phase compensation capacitance Operating temperature Symbol VCCA, VCCD (VCCA - VCCD) VCCA - VRIN VRIN VIHD VILD fCLK tSU th tWH tWL CCOMP Top Value Min. 4.75 (-0.2) 0.70 2.70 2.0 -- -- 10.0 4.0 10.0 10.0 1.0 0 Typ. 5.00 2.00 3.00 -- -- -- -- -- -- -- -- -- Max. 5.25 (0.2) 2.20 4.30 -- 0.8 30 -- -- -- -- -- 70 Unit V V V V MHz ns ns ns ns F C
5
MB40968/40968V
s ELECTRICAL CHARACTERISTICS
(VCC = 4.75 to 5.25V, Ta = 0 to 70C) Value Unit Min. Typ. Max. -- -- -- -- -100 0 VCCA -0.015 2.938 192 -- -- -- -- -- -- -- 8 0.2 10 20 -- 4 Bit % A A A %
Parameter Resolution Linearity error Reference input current High level digital input current Low level digital input current 2-channel's output voltage ratio
Symbol -- LE IRIN IIHD IILD FSR*1 DC
Condition -- VRIN = 3.000 (V) VIHD = 2.7 (V) VILD = 0.4 (V) VCCA = 5.00 (V) VCCD = 5.00 (V) VRIN = VROUT VCCA = 5.00 (V) VCCD = 5.00 (V) VRIN = VROUT VCCA = 5.00 (V) VCCD = 5.00 (V) VRIN = 3.000 (V) Ta = 25C VCCA = 5.25 (V) VCCD = 5.25 (V) VRIN = VROUT
Full-scale analog output voltage
VOFS
VCCA
--
V
Zero-scale analog output voltage Output resistance Power supply current
VOFS ( A ) - VOZS ( A ) VOFS ( B ) - VOZS ( B )
VOZS RO ICC
3.008 240 54*2
3.078 288 80
V mA
*1: FSR = ------------------------------------------------- - 1 x 100 % *2: VCC = 5.00 (V)
MB40968
Reference output voltage VROUT VCCA = 5.00 (V) VCCD = 5.00 (V) 2.900 3.000 3.100 V
MB40968V
Reference output voltage Reference output voltage temperature constant VROUT -- -- -- VCCA -2.100 -- VCCA -2.000 100 VCCA -1.900 -- V ppm/C
6
MB40968/40968V
Switching Characteristics
Parameter Minimum conversion rate Output delay time Output rise time Output fall time Settling time Symbol Fs tPLH tPHL tr tf tsetLH tsetHL Condition -- CL = 15 pF Terminated A.OUT pin with 240 Terminated B.OUT pin with 240 (VCC = 4.75 to 5.25V, Ta = 0 to 70C) Value Unit Min. Typ. Max. 30 -- -- -- -- -- 10 5 5 15 -- -- -- -- -- MSPS ns ns ns ns
7
MB40968/40968V
Figure 1
DAC Output Voltage
Input A1-8 B1-8 (V CCA) FF V OFS
Output A OUT B OUT 5.000 V 5.000 V
00
V OZS (V RIN)
3.008 V 3.000 V 1 LSB = 8 mV
Figure 2 Timing Diagram
t su Data Input t wH t wL 3V Clock Output 1.5V 0V th 3V 1.5V 0V
1/2 LSB
90% 50% 1/2 LSB 10%
Analog Output t PLH
V OZS tr t PHL t setLH t setHL tf
8
MB40968/40968V
Figure 3 Digital Input Equivalent Circuit (A1 to A8, B1 to B8, CLKA, CLKB)
V CCD 50 k 50 k
Degital Input
Threshold Voltage 1.4 V
D.GND
Figure 4 Analog Output Equivalent Circuit (AOUT, BOUT)
Figure 5 MB40968 Reference Output Voltage (VROUT)
V CCA V CCA R 0 = 240 4 k Analog Output IO A.GND A.GND 6 k V ROUT
Figure 6 MB40968V Reference Output Voltage (VROUT)
V CCA
B.G.R RS* V ROUT +
Note*:Reference for preventing over current when short circuit with GND.
9
MB40968/40968V
The relations between Digital input code and Analog output voltage of MB40968/40968V are ideally indicated as follows.
255 - N AOUTN ( BOUTN ) = VCCA - ------------------- x ( VCCA - VRIN ) 256 VOFS = VCCA 255 VOZS = VCCA - --------- x ( VCCA - VRIN ) 256
N: 0 to 255 Digital Input Code
Output Voltage Ratio between 2 channels is calculated as follows.
VOFS ( A ) - VOZS ( A ) FSR = ------------------------------------------------- - 1 x 100% VOFS ( B ) - VOZS ( B )
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MB40968/40968V
s TYPICAL CONNECTION EXAMPLE
5V 2.2H 2.2H
0.01F
47F
47F
0.01F
V CCD A 1 to A 8 DATA Input B 1 to B 8
V CCA A OUT B OUT
CLK Input
CLK A CLK B D.GND
V RIN V ROUT COMP A.GND 1F
11
MB40968/40968V
s PRECAUTIONS
1. Inter-channel Crosstalk
The MB88361 is a 2-channel D/A converter, requiring the use of special mounting methods to minimize crosstalk between analog output pins. Specifically, it is recommended that PC board designs should emphasize the prevention of large coupling capacities between analog output lines. (See sTYPICAL CHARACTERISTIC CURVES.)
2. Prevention of Switching Noise
To reduce superimposed switching noise on the analog output signal to an absolute minimum, it is recommended that a noise limiting capacitor between the VCCA and VCCD pins be placed as close as possible to the pins and connected to the A.GND and D.GND pins.
3. Power Supply Patterns
Power supply patterns connected to the A.GND and B.GND pins should be as possible in order to reduce parasitic impedance.
12
MB40968/40968V
s TYPICAL CHARACTERISTIC CURVES
Figure 7 Power Supply Current vs. Operating Temperature
100 Power Supply Current I CC(mA) V CC=5.25 V V RIN=V ROUT 80
Linearity Error |LE|(%)
Figure 8 Linearity Error vs. Operating Temperature
0.2 V CC=5.00 V V RIN=3.000 V 0.15
60
0.1
40
20
0.05
0 -25
0
25
50
75
100
0 -25
0
25
50
75
100
Operating Temperature Ta(C)
Operating Temperature Ta(C)
Figure 9 Output Resistance vs. Operating Temperature
300
Figure 10 Full-Scale Analog Output Voltage vs. Operating Temperature
Full-Scale Analog Output Voltage V OFS(V) V CC (reference) -2 V CC=5.00 V V RIN=V ROUT
Output Resistance R O()
280
260
-4
240
-6
220
-8
200 -25
0
25
50
75
100
-10 -25
0
25
50
75
100
Operating Temperature Ta(C)
Operating Temperature Ta(C)
Zero-Scale Analog Output Voltage V OZS(V)
Figure 11 Zero-Scale Analog Output Voltage vs. Operating Temperature
3.100 V CC=5.00 V V RIN=3.000 V 3.050
Figure 12 MB40968 Reference Output Voltage vs. Operating Temperature
3.100 Reference Output Voltage V ROUT(V) V CC=5.00 V 3.050
3.000
3.000
2.950
2.950
2.900 -25
0
25
50
75
100
2.900 -25
0
25
50
75
100
Operation Temperature Ta(C)
Operating Temperature Ta(C)
(Continued)
13
MB40968/40968V
Figure 13 MB40968V Reference Output Voltage vs. Operating Temperature
3.200 Reference Output Voltage V ROUT(V) V CC=5.00 V 3.100
Power Supply Voltage-Analog Reference Voltage [V CC-V ROUT](V)
Figure 14 MB40968V Analog Reference Voltage vs. Power Supply Voltage
2.200 Ta=+25C 2.100
3.000
2.000
2.900
1.900
2.800 -25
0
25
50
75
100
1.800 3.5
4.0
4.5
5.0
5.5
6.0
Operating Temperature Ta(C)
Power Supply Voltage V CC(V)
Figure 15 Data Set Up Time vs. Operating Temperature
10 V CC=5.00 V Data Set Up Time t SU(ns) Data Set Up Time t SU(ns) 8
Figure 16 Data Set Up Time vs. Power Supply Voltage
10 Ta=+25C 8
6
6
4
4
2
2
0 -25
0
25
50
75
100
0 3.5
4.0
4.5
5.0
5.5
6.0
Operating Temperature Ta(C)
Power Supply Voltage V CC(V)
Figure 17 Data Hold Time vs. Operating Temperature
6 V CC=5.00 V Data Hold Time t h(ns) Data Hold Time t h(ns) 4
Figure 18 Data Hold Time vs. Power Supply Voltage
6 Ta=+25C 4
2
2
0
0
-2
-2
-4 -25
0
25
50
75
100
-4 3.5
4.0
4.5
5.0
5.5
6.0
Operating Temperature Ta(C)
Power Supply Voltage V CC(V)
(Continued)
14
MB40968/40968V
(Continued)
Figure 19 Output Rise, Fall Time vs. Operating Temperature
Output Rise Time t r Output Fall Time t f (ns) 20 V CC=5.00 V V RIN=V ROUT C L=15 pF
Figure 20 Output Rise, Fall Time vs. Power Supply Voltage
Output Rise Time t r Output Fall Time t f(ns) 20 Ta=25C V RIN=V ROUT C L=15 pF OUTPUT OPEN (2 V amplitude) tr tf 8 tr 4 OUTPUT 240 (1 V amplitude) 0 3.5 4.0 4.5 tf
16
16
12
tr tf OUTPUT OPEN (2 V amplitude) tf
12
8 tr 4
0 -25
OUTPUT 240 (1 V amplitude) 50 75 100
0
25
5.0
5.5
6.0
Operating Temperature Ta(C)
Power Supply Voltage V CC(V)
Figure 21 Output Delay Time vs. Operating Temperature
20 Output Delay Time t PHL,t PLH(ns) V CC=5.00 V V RIN=V ROUT C L=15 pF
Figure 22 Output Delay Time vs. Power Supply Voltage
20 Output Delay Time t PHL,t PLH(ns) Ta=25C V RIN=V ROUT C L=15 pF
16
16
12
OUTPUT OPEN (2 V amplitude)
12 OUTPUT OPEN (2 V amplitude) 8 OUTPUT 240 (1 V amplitude)
8 OUTPUT 240 (1 V amplitude) 0 25 50 75 100
4
4
0 -25
0 3.5
4.0
4.5
5.0
5.5
6.0
Operating Temperature Ta(C)
Power Suppry Voltage V CC(V)
Figure 23 Clock Pulse Width vs. Operating Temperature
10 V CC=5.00 V Clock Pulse Width t W (ns)
Figure 24 Clock Pulse Width vs. Power Supply Voltage
10 Ta=25C Clock Pulse Width t W (ns) 8
8
6
6
4
t WL t WH
4 t WL 2 t WH
2
0 -25
0
25
50
75
100
0 3.5
4.0
4.5
5.0
5.5
6.0
Operating Temperature Ta(C)
Power Supply Voltage V CC(V)
15
MB40968/40968V
s PACKAGE DIMENSION
Plastic DIP 28 pin , (DIP-28P-M03)
26.00 -0.30 1.024
+.008 -.012 +0.20
INDEX-1 9.100.25 (.358.010) INDEX-2
4.85(.191)MAX
0.51(.020)MIN 0.250.05 (.010.002)
3.00(.118)MIN
0.450.10 (.018.004) 1.00 -0
+0.50 +.020
.039 -0 1.7780.18 (.070.007) 1.778(.070) MAX
10.16(.400) TYP
15MAX
23.114(.910)REF
Dimensions in mm (inch)
C
1994 FUJITSU LIMITED D28012S-3C-3
16
MB40968/40968V
Plastic FTP, 28 pin (FTP-28P-M01)
17.75 -0.20 .699 -.008
+0.25 +.010
2.80(.110)MAX
0.05(.002)MIN (STAND OFF)
7.600.30 10.200.40 (.299.012) (.402.016) 1 PIN INDEX
9.200.30 (.362.012)
1.27(.050)TYP
0.450.10 (.018.004)
O0.13(.005)
M
0.15 -0.02 +.002 .006 -.001
+0.05
0.500.20 (.020.008) Details of "A" part 0.20(.008)
0.10(.004)
"A"
0.60(.024) 0.18(.007)MAX 0.68(.027)MAX
16.51(.650)REF
C
1994 FUJITSU LIMITED F28005S-5C-4
Dimensions in mm (inch)
17
MB40968/40968V
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) 754-3753 Fax: (044) 754-3329 North and South America FUJITSU MICROELECTRONICS, INC. Semiconductor Division 3545 North First Street San Jose, CA 95134-1804, U.S.A. Tel: (408) 922-9000 Fax: (408) 432-9044/9045 Europe FUJITSU MIKROELEKTRONIK GmbH Am Siebenstein 6-10 63303 Dreieich-Buchschlag Germany Tel: (06103) 690-0 Fax: (06103) 690-122 Asia Pacific FUJITSU MICROELECTRONICS ASIA PTE. LIMITED No. 51 Bras Basah Road, Plaza By The Park, #06-04 to #06-07 Singapore 189554 Tel: 336-1600 Fax: 336-1609
All Rights Reserved. Circuit diagrams utilizing Fujitsu products are included as a means of illustrating typical semiconductor applications. Complete information sufficient for construction purposes is not necessarily given. The information contained in this document has been carefully checked and is believed to be reliable. However, Fujitsu assumes no responsibility for inaccuracies. The information contained in this document does not convey any license under the copyrights, patent rights or trademarks claimed and owned by Fujitsu. Fujitsu reserves the right to change products or specifications without notice. No part of this publication may be copied or reproduced in any form or by any means, or transferred to any third party without prior written consent of Fujitsu. The information contained in this document are not intended for use with equipments which require extremely high reliability such as aerospace equipments, undersea repeaters, nuclear control systems or medical equipments for life support.
F9607 (c) FUJITSU LIMITED
Printed in Japan
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