AD1990 Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
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Fabricante
AD1990 Datasheet PDF : 16 Pages
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Preliminary Technical Data
AD199x
PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS
Table 4. Pin Function Descriptions
LFCSP
PSOP
Name In/Out Description
Pin No.
Pin No.
1,2,3
3
4,5,6
2
7,8,9,10
1,36
11,12,13 35
PGND1
OUTL+
PVDD1
OUTL-
Negative power supply for high power transistors A2 and B2
O Output of high power transistor pair, left channel positive polarity
Positive power supply for high power transistors, left channel high-side
O Output of high power transistor pair, left channel negative polarity
14,15,16 34
PGND1
Negative power supply for high power transistors, left channel low-side
17
33
ERR2
O Active low thermal shutdown error output
18
32
ERR1
O Active low thermal warning error output
19
31
ERR0
O Active low overcurrent error output
20
21
22
23,26
29,30
DCTRL2
DCTRL1
DCTRL0
DGND
I Non-overlap time setting MSB
I Non-overlap time setting
I Non-overlap time setting LSB
Negative power supply for low power digital circuitry
24,25
28
DVDD
Positive power supply for low power digital circuitry
27
27
CLKI
I Clock input for 256 × fS audio modulator clock
28
26
CLKO
O Inverted version of CLKI for use with external crystal oscillator
29
25
MUTE
I Active low mute input
30
24
RST/PDN I Active low reset/power-down input
31
23
PGA1
I Programmable gain amplifier (PGA) gain MSB
32
22
PGA0
I Programmable gain amplifier (PGA) gain LSB
33,34,35 21
PGND2
Negative power supply for right channel high power transistors
36,37,38
39,40,41,42
43,44,45
46,47,48
49
50
20
18,19
17
16
15
14
OUTR-
PVDD2
OUTR+
PGND2
AGND
NFR+
O Output of high power transistor pair, right channel negative polarity
Positive power supply for right channel high power transistors
O Output of high power transistor pair, right channel positive polarity
Negative power supply for right channel high power transistors
Negative power supply for low power analog circuitry
I Right channel negative feedback – positive input
51
13
NFR-
I Right channel negative feedback – negative input
52
NC
Not Connected. This pin is not used and should be left floating
53
12
AINR
I Analog input for right channel
54
NC
Not Connected. This pin is not used and should be left floating
55
11
REF_FILT O Filter pin for bandgap reference - should be bypassed to AGND
56
10
AGND
Negative power supply for low power analog circuitry
57
9
AVDD
Positive power supply for low power analog circuitry
58
NC
Not Connected. This pin is not used and should be left floating
59
NC
Not Connected. This pin is not used and should be left floating
60
8
61
4
62
7
63
6
64
5
AINL
NC
NFL-
NFL+
MONO
I Analog input for left channel
Not Connected. This pin is not used and should be left floating
I Left channel negative feedback – negative input
I Left channel negative feedback – positive input
I Mono mode (drive left and right output transistors from same modulator)
Rev. PrA – 1/20/05 | Page 7 of 16
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