AD5334 Analog Devices, AD5334 Datasheet - Page 6

• Manufacturer Part Number: AD5334
• Manufacturer: Analog Devices

Specifications of AD5334

• Resolution (bits): 8bit
• Dac Update Rate: 167kSPS
• Dac Settling Time: 6µs
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Voltage Out
• Dac Input Format: Par

Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15–22
23
24
AD5334/AD5335/AD5336/AD5344
HBEN
LDAC
CLR
DB
DB
WR
CS
A0
A1
.
.
.
.
.
.
7
0
Mnemonic
V
V
V
V
V
V
GND
CS
WR
A0
A1
LDAC
PD
V
DB
HBEN
CLR
INTER-
LOGIC
FACE
REF
REF
OUT
OUT
OUT
OUT
DD
0
–DB
C/D
A/B
A
B
C
D
RESET
7
POWER-ON
HIGH BYTE
LOW BYTE
HIGH BYTE
LOW BYTE
HIGH BYTE
LOW BYTE
HIGH BYTE
LOW BYTE
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
AD5335 FUNCTIONAL BLOCK DIAGRAM
RESET
Function
Unbuffered Reference Input for DACs C and D.
Unbuffered Reference Input for DACs A and B.
Output of DAC A. Buffered output with rail-to-rail operation.
Output of DAC B. Buffered output with rail-to-rail operation.
Output of DAC C. Buffered output with rail-to-rail operation.
Output of DAC D. Buffered output with rail-to-rail operation.
Ground Reference Point for All Circuitry on the Part.
Active Low Chip Select Input. This is used in conjunction with WR to write data to the parallel interface.
Active Low Write Input. This is used in conjunction with CS to write data to the parallel interface.
LSB Address Pin for Selecting which DAC Is to Be Written to.
MSB Address Pin for Selecting which DAC Is to Be Written to.
Active Low Control Input that Updates the DAC Registers with the Contents of the Input Registers.
This allows all DAC outputs to be simultaneously updated.
Power-Down Pin. This active low control pin puts all DACs into power-down mode.
Power Supply Pin. This part can operate from 2.5 V to 5.5 V and the supply should be decoupled with a
10 µF capacitor in parallel with a 0.1 µF capacitor to GND.
Eight Parallel Data Inputs. DB
This pin is used when writing to the device to determine if data is written to the high byte register or the
low byte register.
Asynchronous Active Low Control Input that Clears All Input Registers and DAC Registers to Zeros.
REGISTER
REGISTER
REGISTER
REGISTER
DAC
DAC
DAC
DAC
AD5335 PIN FUNCTION DESCRIPTIONS
10-BIT
10-BIT
10-BIT
10-BIT
DAC
DAC
DAC
DAC
V
V
REF
REF
A/B
C/D
7
BUFFER
BUFFER
BUFFER
BUFFER
is the MSB of these eight bits.
AND BUFFERS
TO ALL DACS
–6–
AD5335
POWER-DOWN
V
DD
LOGIC
PD
GND
V
V
V
V
OUT
OUT
OUT
OUT
B
C
D
A
AD5335 PIN CONFIGURATION
V
V
REF
REF
V
V
V
V
LDAC
OUT
OUT
OUT
OUT
GND
C/D
A/B
WR
CS
A0
A1
A
B
C
D
10
11
12
1
2
3
4
5
6
7
8
9
(Not to Scale)
TOP VIEW
AD5335
10-BIT
24
23
22
21
20
19
18
17
16
15
14
13
CLR
HBEN
DB
DB
DB
DB
DB
DB
DB
DB
V
PD
DD
7
6
5
4
3
2
1
0
REV. 0