AD9737A Datasheet, PDF (12/64 Pages) Analog Devices – 11-/14-Bit, 2.5 GSPS

AD9737A/AD9739A
Data Sheet
1 2 3 4 5 6 7 8 9 10 11 12 13 14
A
B
I120
C
VREF
D
E
F
G
AD9739A
H
IRQ
CS
SCLK
RESET
SDIO
SDO
J
K
L
M
N
P
Figure 8. AD9739A Analog I/O and SPI Control Pins (Top View)
Table 8. AD9739A Pin Function Descriptions
Pin No.
Mnemonic
C1, C2, D1, D2, E1, E2, E3, E4
VDDC
A1, A2, A3, A4, A5, B1, B2, B3, B4, B5, C4,
C5, D4, D5
VSSC
A10, A11, B10, B11, C10, C11, D10, D11 VDDA
A12, A13, B12, B13, C12, C13, D12, D13, VSSA
A6, A9, B6, B9, C6, C9, D6, D9, E11, E12,
E13, E14, F1, F2, F3, F4, F11, F12
VSSA Shield
A14
NC
A7, B7, C7, D7
IOUTN
A8, B8, C8, D8
IOUTP
B14
I120
C14
VREF
D14
C3, D3
F13
NC
DACCLK_N/DACCLK_P
IRQ
F14
G13
G14
H13
H14
J3, J4, J11, J12
G1, G2, G3, G4, G11, G12
H1, H2, H3, H4, H11, H12, K3, K4, K11, K12
J1, J2
RESET
CS
SDIO
SCLK
SDO
VDD33
VDD
VSS
NC
K1, K2
NC
J13, J14
K13, K14
DCO_P/DCO_N
DCI_P/DCI_N
Description
1.8 V Clock Supply Input.
Clock Supply Ground.
3.3 V Analog Supply Input.
Analog Supply Ground.
Analog Supply Ground Shield. Tie to VSSA at the DAC.
Do not connect to this pin.
DAC Negative Current Output Source.
DAC Positive Current Output Source.
Nominal 1.2 V Reference. Tie to analog ground via a 10 kΩ
resistor to generate a 120 μA reference current.
Voltage Reference Input/Output. Decouple to VSSA with a 1 nF
capacitor.
Factory Test Pin. Do not connect to this pin.
Negative/Positive DAC Clock Input (DACCLK).
Interrupt Request Open Drain Output. Active high. Pull up to
VDD33 with a 10 kΩ resistor.
Reset Input. Active high. Tie to VSS if unused.
Serial Port Enable Input.
Serial Port Data Input/Output.
Serial Port Clock Input.
Serial Port Data Output.
3.3 V Digital Supply Input.
1.8 V Digital Supply Input.
Digital Supply Ground.
Differential resistor of 200 Ω exists between J1 and J2. Do not
connect to this pin.
Differential resistor of 100 Ω exists between K1 and K2. Do not
connect to this pin.
Positive/Negative Data Clock Output (DCO).
Positive/Negative Data Clock Input (DCI).
Rev. C | Page 12 of 64