AD9854ASTZ Analog Devices Inc, AD9854ASTZ Datasheet - Page 7

• Manufacturer Part Number: AD9854ASTZ
• Description: IC DDS QUADRATURE CMOS 80-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD9854ASTZ

• Package / Case: 80-LQFP
• Resolution (bits): 12 b
• Master Fclk: 300MHz
• Tuning Word Width (bits): 48 b
• Voltage - Supply: 3.14 V ~ 3.47 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Supply Voltage Range: 3.135V To 3.465V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 80
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 9854
• Ic Function: Direct Digital Synthesizer
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AD9854/PCBZ - BOARD EVAL FOR AD9854
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Parameter
PARALLEL I/O TIMING CHARACTERISTICS
SERIAL I/O TIMING CHARACTERISTICS
CMOS LOGIC INPUTS
POWER SUPPLY
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
The reference clock inputs are configured to accept a 1 V p-p (typical) dc offset square or sine wave centered at one-half the applied V
An internal 400 mV p-p differential voltage swing equates to 200 mV p-p applied to both REFCLK input pins.
The I and Q gain imbalance is digitally adjustable to less than 0.01 dB.
Pipeline delays of each individual block are fixed; however, if the first eight MSBs of a tuning word are 0s, the delay appears longer. This is due to insufficient phase
accumulation per system clock period to produce enough LSB amplitude to the DAC.
If a feature such as the inverse sinc, which has 16 pipeline delays, can be bypassed, the total delay is reduced by that amount.
The I/O UD CLK transfers data from the I/O port buffers to the programming registers. This transfer is measured in system clocks.
Change in duty cycle from 1 MHz to 100 MHz with 1 V p-p sine wave input and 0.5 V threshold.
Represents the comparator’s inherent cycle-to-cycle jitter contribution. The input signal is a 1 V, 40 MHz square wave, and the measurement device is a Wavecrest DTS-2075.
Comparator input originates from the analog output section via the external 7-pole elliptic low-pass filter. Single-ended input, 0.5 V p-p. Comparator output
terminated in 50 Ω.
Avoid overdriving digital inputs. (Refer to the equivalent circuits in Figure 3.)
If all device functions are enabled, it is not recommended to simultaneously operate the device at the maximum ambient temperature of 85°C and at the maximum
All functions engaged.
All functions except inverse sinc engaged.
All functions except inverse sinc and digital multipliers engaged.
In most cases, disabling the inverse sinc filter reduces power consumption by approximately 30%.
internal clock frequency. This configuration may result in violating the maximum die junction temperature of 150°C. Refer to the Power Dissipation and Thermal
Considerations section for derating and thermal management information.
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Logic 1 Voltage
Logic 0 Voltage
Logic 1 Current
Logic 0 Current
Input Capacitance
V
V
V
P
P
P
P
ASU
ADHW
DSU
DHD
WRLOW
WRHIGH
WR
ADV
ADHR
RDLOV
RDHOZ
PRE
SCLK
DSU
SCLKPWH
SCLKPWL
DHLD
DV
S
S
S
DISS
DISS
DISS
DISS
Current
Current
Current
(Data Valid Time)
(Minimum WR Time)
(CS Setup Time)
(Address Setup Time to WR Signal Active)
(Data Setup Time to WR Signal Inactive)
(Address to Data Valid Time)
(Serial Data Setup Time)
11, 12, 15
11, 13, 15
14
(Data Hold Time to WR Signal Inactive)
(Period of Serial Data Clock)
Power-Down Mode
(Address Hold Time to RD Signal Inactive)
(Serial Data Hold Time)
(Address Hold Time to WR Signal Inactive)
(RD Low to Output Valid)
(RD High to Data Three-State)
(WR Signal Minimum Low Time)
(WR Signal Minimum High Time)
(Serial Data Clock Pulse Width Low)
(Serial Data Clock Pulse Width High)
11, 12, 15
11, 13, 15
14
11, 15
10
Temp
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
Rev. E | Page 7 of 52
Test
Level
IV
IV
IV
IV
IV
V
I
I
IV
IV
V
I
I
I
I
I
I
I
IV
IV
IV
IV
IV
IV
V
IV
IV
IV
IV
IV
Min
8.0
0
3.0
2.5
7
10.5
15
5
30
100
30
40
40
0
2.2
AD9854ASVZ
Typ
7.5
1.6
0
1.8
30
3
1050
710
600
3.475
2.345
1.975
1
Max
15
15
10
0.8
±5
±5
1210
816
685
4.190
2.825
2.375
50
Min
8.0
0
3.0
0
2.5
7
10.5
15
5
30
100
30
40
40
0
2.2
AD9854ASTZ
Typ
7.5
1.6
1.8
30
3
755
515
435
2.490
1.700
1.435
1
DD
or a 3 V TTL-level pulse input.
Max
15
15
10
0.8
±12
±12
865
585
495
3.000
2.025
1.715
50
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
μA
μA
pF
mA
mA
mA
W
W
W
mW
AD9854