AD9954

14-Bit Direct Digital Synthesizer with 400MSPS DAC, 1.8V, TQFP48

Schematic Symbol

Pin Configuration (49 pins)

Pin	Name	Type
1	I/OUPDATE	bidirectional
2	DVDD	power_in
3	DGND	power_in
4	AVDD	power_in
5	AGND	power_in
6	AVDD	passive
7	AGND	passive
8	~{OSC/REFCLK}	input
9	OSC/REFCLK	input
10	CRYSTALOUT	output
11	CLKMODESELECT	input
12	LOOP_FILTER	input
13	AVDD	passive
14	AGND	passive
15	AGND	passive
16	AVDD	passive
17	AGND	passive
18	AVDD	passive
19	AVDD	passive
20	~{IOUT}	output
21	IOUT	output
22	AGND	passive
23	DACBP	input
24	DAC_R_{SET}	input
25	AVDD	passive
26	AGND	passive
27	AVDD	passive
28	COMP_OUT	output
29	AVDD	passive
30	COMP_IN	input
31	~{COMP_IN}	input
32	AGND	passive
33	DGND	passive
34	DVDD	passive
35	PWRDWNCTL	input
36	RESET	input
37	IOSYNC	input
38	SDO	output
39	~{CS}	input
40	SCLK	input
41	SDIO	bidirectional
42	DGND	passive
43	DVDD_I/O	power_in
44	SYNC_IN	power_in
45	SYNC_CLK	output
46	OSK	input
47	PS0	input
48	PS1	input
49	AGND	passive

Footprint

Confirmed

Package_QFP/TQFP-48-1EP_7x7mm_P0.5mm_EP3.5x3.5mm

Pad Layout

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49

Pads (53)

Number	Type
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1	smd
2	smd
3	smd
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6	smd
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39	smd
40	smd
41	smd
42	smd
43	smd
44	smd
45	smd
46	smd
47	smd
48	smd
49	smd

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