DSP201 Burr-Brown Corporation, DSP201 Datasheet - Page 6

• Manufacturer Part Number: DSP201
• Description: DSP-Compatible Single/Dual DIGITAL-TO-ANALOG CONVERTERS
• Manufacturer: Burr-Brown Corporation

DSP202 PIN CONFIGURATION
AGNDB
VOUTB
RESET
MSBB
VOSB
SYNC
XCLK
SINA
SINB
SWL
SSF
V +
V +
V –
A
D
D
®
10
11
12
13
14
1
2
3
4
5
6
7
8
9
DSP201/202
DSP202
28
27
26
25
24
23
22
21
20
19
18
17
16
15
AGND
DGND
V +
VPOT
MSBA
VOSA
AGNDA
VOUTA
V –
DGND
DGND
ENABLE
CASC
CONV
A
D
6
DSP202 PIN ASSIGNMENTS
PIN #
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
ENABLE
AGNDB
AGNDA
VOUTB
RESET
VOUTA
NAME
MSBB
VOSB
SYNC
CONV
CASC
DGND
DGND
VOSA
MSBA
DGND
AGND
XCLK
VPOT
SINA
SINB
SWL
SSF
V
V
V
V
V
A
D
D
D
A
–
+
+
–
+
DESCRIPTION
–5V Analog Power.
Channel B MSB Adjust In.
Channel B VOS Adjust In.
Channel B Analog Ground.
Channel B Voltage Out.
+5V Digital Power.
+5V Digital Power.
Reset. If LOW, DAC output will be 0V after two
Convert Commands, and will remain there as long
as the Reset input is LOW. If HIGH, normal
operation proceeds. Two Convert Commands are
required after Reset goes from LOW to HIGH
before the output will relate to the input word.
Select Sync Format In. Tie HIGH for use with
Motorola and TI DSP ICs. Tie LOW for use with
AT&T DSP ICs.
Select Word Length In. If HIGH, DSP202 accepts
first 16 bits of data. If LOW, DSP202 accepts first
18 bits of data. Must be HIGH if CASC is HIGH.
Data Synchronization Output. Active HIGH when
SSF is HIGH, active LOW when SSF is LOW.
Data Transfer Clock Input.
Channel A Serial Data In. MSB first, Binary Two’s
Complement format. In Cascade Mode, connect to
SINB and to DSP IC output.
Channel B Serial Data In. MSB first, Binary Two’s
Complement format. In Cascade Mode, connect to
SINA and to DSP IC output.
Convert Command In. DAC is updated on falling
edge, and initiates clocking new data in.
Select Cascade Mode In. If HIGH, DSP202
accepts a 32-bit word, and uses the first 16 bits to
update channel A, and the second 16 bits to
update channel B. In Cascade Mode, SINA and
SINB are connected together. If CASC is LOW,
data is strobed into both channels on each clock
cycle.
Latch Enable In. If LOW, DAC output will be
latched with new data word on falling edge of
Convert Command. If HIGH, Convert Commands
will be ignored.
Digital Ground.
Digital Ground.
–5V Digital Power.
Channel A Voltage Out.
Channel A Analog Ground.
Channel A VOS Adjust In.
Channel A MSB Adjust In.
Trim Reference Out for MSB adjustments.
+5V Analog Power.
Digital Ground.
Analog Ground.