STLC7550TQFP 查看數據表（PDF） - STMicroelectronics
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STLC7550TQFP Datasheet PDF : 17 Pages
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STLC7550
PIN LIST
Pin Number
TQFP44
TQFP48
1 - 2, 10 to 13,
21 to 24, 32 to
35, 43 - 44
1 - 2, 10 to 14,
22 to 26, 34 to
38, 46 to 48
3
3
4
4
5
5
6
6
7
7
8
8
9
9
14
15
15
16
16
17
17
18
18
19
19
20
20
21
25
27
26
28
27
29
28
30
29
31
30
32
31
33
36
39
37
40
38
41
39
42
40
43
41
44
42
45
Name
Type
Description
NC
SCLK
FS
DVDD
DGND
MCM
XTALOUT
XTALIN/MCLK
HC1
HC0
PWRDWN
M/S
VREFP
VREFN
AGND1
AUXIN+
AUXIN-
IN+
IN-
AVDD
VCM
AGND2
OUT+
OUT-
RESET
TS
TSTD1
DIN
DOUT
- Not connected
O Shift Clock Output
I/O Frame Synchronization Input (slave)/Output (master)
I Positive Digital Power Supply (2.7V TO 5.5V)
I Digital Ground
I Master Clock Mode
O Crystal Output
I Crystal Input (MCM = 1) / External Clock (MCM = 0)
I Hardware Control Input
I Hardware Control Input
I Power down Input
I Master/Slave Mode Control Pin Input
O 16-bit D/A and A/D Positive Reference Voltage
O 16-bit D/A and A/D Negative Reference Voltage
I Analog Ground
I Non-inverting Input to Auxiliary Analog Input
I Inverting Input to Auxiliary Analog Input
I Non-inverting Input to Analog Input Amplifier
I Inverting Input to Analog Input Amplifier
I Positive Analog Power Supply (2.7V to 5.5V)
O Common Mode Voltage Output (AVDD/2)
I Analog Ground
O Non-inverting Smoothing Filter Output
O Inverting Smoothing Filter Output
I Reset Function to initialize the internal counters
I Timeslot Control Input
I/O Digital Input/Output reserved for test
I Serial Data Input
O Serial Data Output
PIN DESCRIPTION
1 - POWER SUPPLY (5 pins)
1.1 - Analog VDD Supply (AVDD)
This pin is the positive analog power supply
voltage for the DAC and the ADC section.
1.2 - Digital VDD Supply (DVDD)
This pin is the positive digital power supply for DAC
and ADC digital internal circuitry.
1.3 - Analog Ground (AGND1, AGND2)
It is not internally connected to digital VDD supply
(DVDD).
These pins are the ground return of the analog DAC
(ADC) section.
In any case the voltage on this pin must be higher
or equal to the voltage of the Digital power supply
(DVDD).
1.4 - Digital Ground (DGND)
This pin is the ground for DAC and ADC internal
digital circuitry.
Notes : 1. To obtain published performance, the analog VDD and Digital VDD should be decoupled with respect to Analog Ground and Digital
Ground, respectively. The decoupling is intended to isolate digital noise from the analog section ; decoupling capacitors should
be as close as possible to the respective analog and digital supply pins.
2. All the ground pins must be tied together. In the following section, the ground and supply pins are referred to as GND and VDD,
respectively.
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