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參數(shù)資料
| 型號： | PCM58P |
| 英文描述： | Precision, 18-Bit Monolithic Audio DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 精密，18位單片音頻數(shù)字模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 64K |
| 代理商： | PCM58P |
PCM58P
3
PCM58P
-X
Basic Model Number
P: Plastic
Performance Grade Code
PIN
DESCRIPTION
MNEMONIC
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
Decoupling Capacitor
+Vcc Voltage Supply
Decoupling Capacitor
Decoupling Capacitor
Bipolar Offset Point
Current DAC I
Feedback Resistor
Analog Common
–V
Voltage Supply
Feedback Resistor
Digital Common
No Connection
+V
Voltage Supply
No Connection
Decoupling Capacitor
Clock
DAC Latch Enable
No Connection
Data Input
–V
Voltage Supply
No Connection
No Connection
No Connection
Bit 4 Adjust
Bit 3 Adjust
Bit 2 Adjust
Bit 1 (MSB) Adjust
Bit Adjust V
POT
CAP
+V
CC
CAP
CAP
BPO
I
OUT
R
ACOM
–V
CC
R
DCOM
NC
+V
CC
NC
CAP
CLK
LE
NC
DATA
–V
CC
NC
NC
NC
B4 ADJ
B3 ADJ
B2 ADJ
B1 ADJ
V
POT
PIN ASSIGNMENTS
±
V
Supply Voltages ................................................................ +6V; –16V
Input Logic Voltage ................................................................. –1V to +V
CC
Storage Temperature ...................................................... –60
°
C to +100
°
C
Lead Temperature (soldering, 10s)................................................ +300
°
C
ABSOLUTE MAXIMUM RATINGS
ORDERING INFORMATION
PACKAGE INFORMATION
(1)
PACKAGE DRAWING
NUMBER
MODEL
PACKAGE
PCM58P
PCM58P, J
PCM58P, K
28-Pin Plastic DIP
28-Pin Plastic DIP
28-Pin Plastic DIP
215
215
215
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.
FIGURE 1. PCM58P Production THD+N Test Setup.
DISCUSSION OF
SPECIFICATIONS
TOTAL HARMONIC DISTORTION + NOISE
The key specification for the PCM58P is total harmonic
distortion plus noise. Digital data words are read into the
PCM58P at four times the standard audio sampling frequency
of 44.1kHz or 176.4kHz such that a sinewave output of 991Hz
is realized. For production testing, the output of the DAC
goes to a programmable gain amplifier to provide gain at
lower signal output test levels and then through a 20kHz
low pass filter before being fed into an analog type distortion
analyzer. Figure 1 shows a block diagram of the production
THD+N test setup.
Programmable
Gain Amp
0dB to 60dB
Binary
Counter
Clock
0
–20
–40
–60
–80
–100
–120
Use 400Hz High-Pass
Filter and 30kHz
Low-Pass Filter
Meter Settings
(Shiba Soku Model
725 or Equivalent)
Digital Code
(EPROM)
Distortion
Analyzer
Parallel-to-Serial
Conversion
Timing
Logic
Sampling Rate = 44.1kHz X 4 (176.4kHz)
Output Frequency = 991Hz
Low-Pass
Filter
(Toko APQ-25
or Equivalent)
DUT
(PCM58P)
LOW-PASS FILTER
CHARACTERISTIC
Frequency (Hz)
Latch Enable
1 10
1
10
2
10
3
10
4
10
5
G
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