AD7945BRZ Analog Devices Inc, AD7945BRZ Datasheet - Page 5

• Manufacturer Part Number: AD7945BRZ
• Description: IC DAC 12BIT MULTIPLYING 20-SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD7945BRZ

• Data Interface: Parallel
• Settling Time: 600ns
• Number Of Bits: 12
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 25µW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Resolution (bits): 12bit
• Sampling Rate: 1.7MSPS
• Input Channel Type: Parallel
• Supply Current: 5µA
• Digital Ic Case Style: SSOP
• No. Of Pins: 20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. B
AD7943 TIMING SPECIFICATIONS
Parameter
t
t
t
t
t
t
t
t
NOTES
1
2
3
Specifications subject to change without notice.
STB
DS
DH
SRI
LD
CLR
ASB
SV
All input signals are specified with tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V. tr and tf should not exceed 1 s on any digital input.
STB mark/space ratio range is 60/40 to 40/60.
t
SV
3
is measured with the load circuit of Figure 2 and defined as the time required for the output to cross 0.8 V or 2.4 V.
2
STB1,
STB2,
STB4
STB3
LD1,
LD2,
CLR
SRO
SRI
t
DB11(N)
DS
(MSB)
t
SRI
Limit @
V
60
15
35
55
55
55
0
60
t
DH
DD
t
STB
= +3 V to +3.6 V
DB10(N–1)
DB10(N)
t
SV
Figure 2. Load Circuit for Digital Output Timing Specifications
Limit @
V
40
10
25
35
35
35
0
35
DD
TO OUTPUT
Figure 1. AD7943 Timing Diagram
= +4.5 V to +5.5 V
1
PIN
(T
A
= T
50pF
MIN
C
L
to T
1.6mA
200 A
–5–
MAX
, unless otherwise noted)
I
I
OL
OH
Units
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns max
+2.1V
Description
Min Time Between Strobing Input Shift
Register and Loading DAC Register
STB Pulsewidth
Data Setup Time
Data Hold Time
SRI Data Pulsewidth
Load Pulsewidth
CLR Pulsewidth
STB Clocking Edge to SRO Data Valid Delay
AD7943/AD7945/AD7948
DB0(N)
DB0(N–1)
t
ASB
t
LD ,
t
CLR