Analog Devices AD9739 Manual page 9

Table 6. AD9739 Pin Function Descriptions
Pin No.
C1, C2, D1, D2, E1, E2, E3, E4
A1, A2, A3, A4, A5, B1, B2, B3, B4, B5, C4,
C5, D4, D5
A10, A11, B10, B11, C10, C11, D10, D11
A12, A13, B12, B13, C12, C13, D12, D13,
A6, A9, B6, B9, C6, C9, D6, D9, F1, F2, F3,
F4, E11, E12, E13, E14, F11, F12
A14
A7, B7, C7, D7
A8, B8, C8, D8
B14
C14
D14
C3, D3
F13
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
K1, K2
J13, J14
K13, K14
1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
K
L
M
N
P
Figure 6. Analog I/O and SPI Control Pins (Top View)
Mnemonic
VDDC
VSSC
VDDA
VSSA
VSSA Shield
NC
IOUTN
IOUTP
I120
VREF
IPTAT
DACCLK_N/DACCLK_P
IRQ
RESET
CS
SDIO
SCLK
SDO
VDD33
VDD
VSS
SYNC_OUT_P/SYNC_OUT_N
SYNC_IN_P/SYNC_IN_N
DCO_P/DCO_N
DCI_P/DCI_N
Rev. A | Page 9 of 56
10 11 12 13 14
I120
VREF
IPTAT
IRQ
CS
SCLK
Description
1.8 V Clock Supply.
Clock Supply Ground.
3.3 V Analog Supply.
Analog Supply Ground.
Analog Supply Ground Shield. Tie to VSSA at the DAC.
No Connect
DAC Negative Output. 10 mA to 30 mA full-scale output
current.
DAC Positive Output. 10 mA to 30 mA full-scale output current.
Nominal 1.2 V Reference. Tie to analog ground via a 10 kΩ
resistor to generate a 120 μA reference current.
Band Gap Voltage Reference I/O. Tie to analog ground via a 1 nF
capacitor; output impedance is approximately 5 kΩ.
Factory Test Pin. Output current, proportional to absolute
temperature, is approximately 10 μA at 25°C with a slope of
approximately 20 nA/°C.
Negative/Positive DAC Clock Input (DACCLK).
IRQ. Active low open-drain interrupt request output; pull up to
DVDD33 with a 10 kΩ resistor.
RESET. 1 resets the AD9739.
See the Serial Peripheral Interface section for the pin
description.
See the Serial Peripheral Interface section for the pin
description.
See the Serial Peripheral Interface section for the pin
description.
See the Serial Peripheral Interface section for the pin
description.
3.3 V Digital Supply.
1.8 V Digital Supply.
Digital Supply Ground.
Positive/Negative SYNC Output (SYNC_OUT).
Positive/Negative SYNC Input (SYNC_IN).
Positive/Negative Data Output Clock (DCO).
Positive/Negative Data Input Clock (DCI).
RESET
SDIO
SDO
1
1
1
1
AD9739