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| 型号： | TDA8757AHL/21 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | ADC |
| 英文描述： | 3-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP144 |
| 封装： | PLASTIC, HLQFP-144 |
| 文件页数： | 15/37页 |
| 文件大小： | 908K |
| 代理商： | TDA8757AHL/21 |
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Philips Semiconductors
TDA8757A
Triple 8-bit ADC 205 Msps
Preliminary data
Rev. 01 — 22 March 2002
22 of 37
9397 750 09549
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
9.3 3W-bus protocol
For the 3W-bus, the rst byte refers to the register address which is programmed. The
second byte refers to the data to be sent to the chosen register (see Table 4).
Using a 3W-bus interface, an indenite number of ICs can operate on the same
system. Pin SEN is used to validate the circuits.
10. Limiting values
Table 13: Address sequence for mode 0
S = START condition, A = acknowledge bit (generated by the device) and P = STOP condition.
S
IC ADDRESS A
SUBADDRESS
REGISTER1
A
DATA
REGISTER1
(see Table 4)
A
SUBADDRESS
REGISTER2
A
...
P
Table 14: Address sequence for mode 1
S = START condition, A = acknowledge bit (generated by the device) and P = STOP condition.
S
IC ADDRESS A
SUBADDRESS
XX11 1111
A
DATA
REGISTER1
(see Table 4)
ADATA
REGISTER2
A
...
P
Fig 9.
3W-bus protocol.
FCE707
1
SEN
SCL
SDA
tr3W = 600 ns
ts3W = 100 ns
th3W = 100 ns
9
xx
x
A3 A2 A1 A0
D7
D6
D5 D4 D3 D2
D1
D0
19
100 ns
Table 15: Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
VCCA
analog supply voltage
0.3
+7.0
V
VDDD
logic supply voltage
0.3
+7.0
V
VCCD
digital supply voltage
0.3
+7.0
V
VCCO
output stages supply voltage
0.3
+7.0
V
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