TLC320V343 Datasheet, PDF (3/30 Pages) Texas Instruments – SINGLE-SUPPLY ANALOG INTERFACE CIRCUIT

functional block diagram
IN + ²⁶
IN –
AUX IN +
25
28
AUX IN – ²⁷
MON OUT ¹
M/S ¹⁸
FC0 ¹⁵
FC1 ¹⁶
OUT + ³
OUT – ⁴
M
U
X
ADC Channel
DAC Channel
TLC320V343
SINGLE-SUPPLY ANALOG INTERFACE CIRCUIT
SLAS159 – MARCH 1997
Filter
Filter
M
U
X
ADC
Serial
Port
Internal
Voltage
Reference
(sin x)/x
Correction
DAC
11 _DOUT
12 _FS
14 _MCLK
13 _SCLK
10 _DIN
17 _FSD
19 _EOC
2
5
7
20
PWR
DWN
DAC DAC DGTL
VDD GND GND
NOTE A: Terminal numbers shown are for the FN package.
9
DGTL
VDD
23 24 22
ADC ADC ADC
VMID VDD GND
21
6
SUBS DAC
VMID
8
RESET
Terminal Functions
TERMINAL
NAME
NO.† NO.‡ ^I/O
DESCRIPTION
ADC VDD
ADC VMID
24
32
I Analog supply voltage for the ADC channel
23
30
O Midsupply for the ADC channel (requires a bypass capacitor). ADC VMID must be buffered when used
as an external reference.
ADC GND
22
27
I Analog ground for the ADC channel
AUX IN +
28
38
I Noninverting input to auxiliary analog input amplifier
AUX IN –
27
37
I Inverting input to auxiliary analog input amplifier
DAC VDD
DAC VMID
5
49
I Digital supply voltage for the DAC channel
6
51
O Midsupply for the DAC channel (requires a bypass capacitor). DAC VMID must be buffered when used
as an external reference.
DAC GND
7
54
I Analog ground for the DAC channel
DIN
10
1
I Data input. DIN receives the DAC input data and command information and is synchronized with
SCLK.
DOUT
11
3
O Data output. DOUT outputs the ADC data results and register read contents. DOUT is synchronized
with SCLK.
DGTL VDD
DGTL GND
9
59
20
22
I Digital supply voltage for control logic
I Digital ground for control logic
EOC
19
17
O End-of-conversion output. EOC goes high at the start of the ADC conversion period and low when
conversion is complete. EOC remains low until the next ADC conversion period begins and indicates
the internal device conversion period.
FC0
15
11
I Hardware control input. FC0 is used in conjunction with FC1 to request secondary communication
and phase adjustments. FC0 must be tied low when it is not used.
FC1
16
12
I Hardware control input. FC1 is used in conjunction with FC0 to request secondary communication
and phase adjustments. FC1 must be tied low when it is not used.
† _{Terminal numbers shown are for the FN package.}
‡ _{Terminal numbers shown are for the PM package.}
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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