FUJITSU MB40C568 DATA SHEET
查询MB40C568供应商
FUJITSU SEMICONDUCTOR
DATA SHEET
ASSP for Image Processing
CMOS
A/D Converter
(1-channel, 8-bit, 20MHz)
MB40C568
DESCRIPTION
■
The MB40C568 is a high-speed A/D converter using high-speed CMOS process technology.
FEATURES
■
• Resolution: 8 bits
• Linearity error: ±0.20% (Typ.)
• Maximum conversion rate: 20 MSPS (Min.)
• Power supply voltage: Analog section +5.0 V
Digital section +3.0 V or +5.0 V
• Digital input voltage range: TTL level
• Digital output voltage range: CMOS level compatible
• Analog input voltage range: 0.5 to 4 V (with 2 Vp-p)
• Analog input capacity: 15 pF (Typ.)
• Power consumption: 50 mW (Typical:@f
60 mW (Typical:@f
• Additional function: Reference voltage generator circuit: VREFT = 3 V, VREFB = 1 V
• Package options: SOP24, SSOP24
CLK = 20 MHz, AVDD = 5 V, DVDD = 3 V)
CLK = 20 MHz, AVDD = DVDD = 5 V)
DS04-28207-2E
PACKAGES
■
24-pin, Plastic SOP
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.
24-pin, Plastic SSOP
(FPT-24P-M03)(FPT-24P-M01)
MB40C568
PIN ASSIGNMENT
■
(TOP VIEW)
AVDD
DVDD
AVSS
(LSB) D8
D7
D6
D5
D4
D3
D2
(MSB) D1
DVSS
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
(FPT-24P-M01)
(FPT-24P-M03)
PIN DESCRIPTION
■
Pin No. Pin name Functions
1, 18 AV
2, 13, 16 DV
DD Analog power supply pins (+5 V)
DD Digital power supply pins (+3 or +5 V)
3, 15, 17, 24 AVSS Analog power ground pins (0 V)
12 DVSS Digital power ground pin (0 V)
4 to 11 D
1 to D8 Digital output pins. D1: MSB, D8: LSB
14 CLK Clock input pin
21 V
19 V
20 V
INA Analog input pin. Input range: VRB to VRT (2 Vp-p between 0.5 to 4 V)
RT Reference voltage input pin (3 V)
REFT
Reference voltage output pin. When connected to VRT, the pin generates
0.6 × AV
DD (3 V).
23 VRB Reference voltage input pin (1 V)
22 V
REFB
Reference voltage output pin. When connected to VRB, the pin generates
0.2 × AVDD (1 V).
AVSS
VRB
VREFB
VINA
VREFT
VRT
AVDD
AVSS
DVDD
AVSS
CLK
DV
DD
Values within ( ) are typical values.
NOTES ON USE
■
• Be sure to bypass the AVDD, DVDD, VRT and VRB pins to the ground using a high-frequency capacitor.
The high-frequency capacitor should be connected as near the pin as possible.
• Provide four clocks or more immediately after the power up to prevent current dissipation due to the
indeterminate internal logic.
2
ABSOLUTE MAXIMUM RATINGS (See WARNING)
■
MB40C568
Parameter Symbol
Rating
Min. Max.
Power supply voltage AV
Input voltage
Output voltage D
DD, DVDD –0.3 7.0 V
CLK, V
INA
VRT, VRB
1 to D8 –0.3 DVDD+0.3 V
–0.3 AVDD+0.3 V
Storage temperature Tstg –55 +125 °C
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.
RECOMMENDED OPERATING CONDITIONS
■
Value
Parameter Symbol
Min. Typ. Max.
Analog input voltage V
Analog reference voltage: T V
Analog reference voltage: B V
INA VRB –VRT V
RT – – 4.00 V
RB 0.50 – – V
Analog reference voltage range VRT–VRB 1.90 2.00 2.10 V
Digital "H” level input voltage V
IHD 2.4 – – V
Unit
Unit
Digital “L” level input voltage V
Digital input current I
ILD ––0.8V
ID ––5µA
Clock frequency fCLK 0.1 – 20 MHz
Minimum “H” level clock pulse width
Minimum “L” level clock pulse width
tw
tw
+
–
22.5 – – ns
22.5 – – ns
Operating temperature range Ta –20 – 70 °C
WARNING:
Recommended operating conditions are normal operating ranges for the semiconductor device. All
the device’s electrical characteristics are warranted when operated within these ranges.
Always use semiconductor devices within the recommended operating conditions. Operation outside
these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented on
the data sheet. Users considering application outside the listed conditions are advised to contact their
FUJITSU representative beforehand.
(Continued)
3
MB40C568
(Continued)
• When using a single power supply
Parameter Symbol
Power supply voltage AV
• When using dual power supplies
Parameter Symbol
Power supply voltage
WARNING:
Recommended operating conditions are normal operating ranges for the semiconductor device. All
the device’s electrical characteristics are warranted when operated within these ranges.
Always use semiconductor devices within the recommended operating conditions. Operation outside
these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented on
the data sheet. Users considering application outside the listed conditions are advised to contact their
FUJITSU representative beforehand.
Value
Min. Typ. Max.
DD, DVDD 4.75 5.00 5.25 V
Value
Min. Typ. Max.
AV
DD 4.75 5.00 5.25 V
DV
DD 2.70 3.00 3.30 V
Unit
Unit
4
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