The PCM63P is a precision 20-bit digital-to-analog
converter with ultra-low distortion (鈥?6dB max with a
full scale output; PCM63P-K). Incorporated into the
PCM63P is a unique
Colinear
dual-DAC per channel
architecture that eliminates unwanted glitches and
other nonlinearities around bipolar zero. The PCM63P
also features a very low noise (116dB max SNR;
A-weighted method) and fast settling current output
(200ns typ, 2mA step) which is capable of 16-times
oversampling rates.
Applications include very low distortion frequency
synthesis and high-end consumer and professional
digital audio applications.
Upper
B2 Adj
23
Lower
B2 Adj
24
PCM63P
Colinear
20-Bit DAC
Upper DAC
Positive
Data Latches
19-Bit
Upper
DAC
COLINEAR
20-BIT AUDIO DAC
NEAR-IDEAL LOW LEVEL OPERATION
GLITCH-FREE OUTPUT
ULTRA LOW 鈥?6dB max THD+N
(Without External Adjustment)
116dB SNR min (A-Weight Method)
INDUSTRY STD SERIAL INPUT FORMAT
FAST (200ns) CURRENT OUTPUT
(
鹵
2mA;
鹵
2% max)
CAPABLE OF 16x OVERSAMPLING
COMPLETE WITH REFERENCE
+5V
Analog
2
+5V
Digital
13
鈥?V
Analog
28
鈥?V
Digital
11
Clock
18
Input Shift
Register
and
Control
Logic
9
R
FEEDBACK
Latch Enable
20
10
Lower DAC
Negative
Data Latches
19-Bit
Lower
DAC
R
FEEDBACK
Data
21
6
I
OUT
Buried
Zener
Reference
Servo
Amp
Ref
Amp
5
4
Bipolar Offset Current
Offset Decouple
3
Reference
Decouple
1
Servo
Decouple
25
Potentiometer
Voltage
7
Analog
Common
12
Digital
Common
Colinear
鈩? Burr-Brown Corp.
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111 鈥?Twx: 910-952-1111
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