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PDF ADC78H89CIMTX Data sheet ( Hoja de datos )
| Número de pieza | ADC78H89CIMTX | |
| Descripción | 7 CHANNEL 500KSPS/ 12 BIT A/D CONVERTER | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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2003 4
ADC78H89
7 500kSPS 12
A/D
ADC78H89
ADC78H89
7
/
12 CMOS A/D
500kSPS
AIN1 AIN7 7
MICROWIRE™
SPI™ QSPI™
DSP
ADC78H89
5.25V
AVDD
1.5mW 5V
0.5 W
85
(AVDD)
(DVDD)
8.3mW
3V
ADC78H89
2.7V
2.7V
3V
0.3 W 5V
16 TSSOP
40
7
SPI™/QSPI™/MICROWIRE™/DSP
16 TSSOP
DNL
INL
3V
5V
500 kSPS
1 LSB (max)
1 LSB (max)
1.5 mW (
8.3 mW (
)
)
Order Code
ADC78H89CIMT
ADC78H89CIMTX
TRI-STATE®
MICROWIRE™
QSPI™
SPI™
()
© National Semiconductor Corporation DS200616-01-JP
Temperature Range
40 to 85
40 to 85
1
Description
16-Lead TSSOP Package
16-Lead TSSOP Package, Tape & Reel
1 page  
ADC78H89
TMAX
AVDD DVDD
2.7V 5.25V fSCLK 8MHz CL 50pF
TA 25
Symbol
tCONVERT
tACQ
t1a
t1b
t2
t3
t4
t5
t6
t7
t8
Parameter
Acquisition Time; Throughput Time
tCONVERT tACQ 16 x tSCLK
High SCLK Setup to Falling CS
Low SCLK Hold to Falling CS
Delay from CS Until DOUT
TRI-STATE® Disabled
Data Access Time after SCLK
Falling Edge
Data Setup Time Prior to SCLK
Rising Edge
Data Valid SCLK Hold Time
SCLK High Pulse Width
SCLK Low Pulse Width
CS Rising Edge to DOUT
High-Impedance
Conditions
(Note 4)
(Note 4)
Typical
Note 4:
t1a t1b
CS
TA TMIN
Limits
13
3
10
10
30
Units
SCLK Cycles
SCLK Cycles
ns(min)
ns(min)
ns(max)
30 ns(max)
10
10
0.4 x tSCLK
0.4 x tSCLK
20
ns(max)
ns(max)
ns(min)
ns(min)
ns(max)
(HIGH
LOW)
5 www.national.com/JPN/
5 Page 
()
Table 2. Control Register Bit Descriptions
7, 6, 2, 1, 0
5
4
3
DONTC
ADD2
ADD1
ADD0
Don’t care
3
3
CS
Table
Table 3. Input Channel Selection
ADD2
0
0
0
0
1
1
1
1
ADD1
0
0
1
1
0
0
1
1
ADD0
0
1
0
1
0
1
0
1
2.0 ADC78H89
ADC78H89
A/D
D/A
Input Channel
AIN1 (Default)
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
GND
ADC78H89
Figure 2
SW1
1
CS LOW
Figure 2 3
ADC78H89
7
SW2
ADC78H89
3 SCLK
Figure 3 ADC78H89
)
SW2
SW1
(
AVDD/2 VIN
DAC
()
DAC
SCLK
ADC78H89 CS LOW
13
FIGURE 2. ADC78H89 in Track Mode
FIGURE 3. ADC78H89 in Hold Mode
11
www.national.com/JPN/
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ADC78H89CIMTX.PDF ] | |
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