PCM67 Burr-Brown Corporation, PCM67 Datasheet - Page 11

• Manufacturer Part Number: PCM67
• Description: Advanced 1-Bit BiCMOS Dual 18-Bit DIGITAL-TO-ANALOG CONVERTER
• Manufacturer: Burr-Brown Corporation

FIGURE 12. PCM67/69A THD+N Production Test.
FIGURE 13. Single +5V Power Supply, with LPF, I/V Amp Application Circuit for Portable Digital Audio.
Digital
In
+
Counter
C
Binary
0.1 F
Use 400Hz High-Pass
1
11
12
13
14
15
16
17
18
19
20
Filter and 30kHz
Low-Pass Filter
Meter Settings
(+5V)
PCM69A
V
PCM67
CC
or
10
9
8
7
6
5
4
3
2
1
(Shiba Soku Model
725 or Equivalent)
Digital Code
(EPROM)
Distortion
Analyzer
+
C
100 F
C
C
2
5
4
10 F
10 F
Timing
Logic
+ C
+
100 F
C
100 F
3
6
Parallel-to-Serial
Programmable
0dB to 60dB
Conversion
R
680
R
680
Sampling Rate = 44.1kHz x 8 (352.8kHz)
Gain Amp
4
3
11
Output Frequency = 991Hz
R
680
R
680
2
1
+
C
10 F
8
System Clock
+
10 F
C
A
7
1
, A
Bit Clock
40kHz 3rd-Order
2
; NJM2100 or LM833
Word Clock
(PCM67/69A)
1000pF
1000pF
2k
2k
Low-Pass
GIC Type
C
A
A
R
C
R
10
2
1
5
9
6
Filter
DUT
+5V
PCM67/69A
200
200
R
R
8
7
+ C
+ C
2200pF
2200pF
12
11
Converter
OPA627
I-to-V
OUT R-ch
2.5V
OUT L-ch
2.5V
1.2V
1.2V
®