Datasheet
AD9734/AD9735/AD9736
Rev. A | Page 12 of 72
04862-115
A
B
C
D
E
F
DACCLK–
DACCLK+
G
H
J
K
L
MNC
N
P
1413121110876321954
NC
DB8
DB9
DB10
DB11 (MSB)
DB7
DB6
DB5
DB4
DATACLK_IN
DB3
DATACLK_OUT
DB2
DB1
DB0 (LSB)
Figure 3. AD9735 Digital LVDS Input, Clock I/O (Top View)
Table 7. AD9735 Pin Function Descriptions
Pin No. Mnemonic Description
A1, A2, A3, B1, B2, B3, C1, C2, C3, D2, D3 CVDD18 1.8 V Clock Supply.
A4, A5, A6, A9, A10, A11, B4, B5, B6, B9,
B10, B11, C4, C5, C6, C9, C10, C11, D4, D5,
D6, D9, D10, D11
AVSS Analog Supply Ground.
A7, B7, C7, D7 IOUTB DAC Negative Output. 10 mA to 30 mA full-scale output current.
A8, B8, C8, D8 IOUTA DAC Positive Output. 10 mA to 30 mA full-scale output current.
A12, A13, B12, B13, C12, C13, D12, D13 AVDD33 3.3 V Analog Supply.
A14 DNC Do Not Connect.
B14 I120
Nominal 1.2 V Reference. Tie to analog ground via 10 kΩ resistor to
generate a 120 μA reference current.
C14 VREF
Band Gap Voltage Reference I/O. Tie to analog ground via 1 nF
capacitor; output impedance approximately 5 kΩ.
D1, E2, E3, E4, F2, F3, F4, G1, G2, G3, G4 CVSS Clock Supply Ground.
D14 IPTAT
Factory Test Pin; Output current, proportional to absolute
temperature, is approximately 10 μA at 25°C with a slope of
approximately 20 nA/°C.
E1, F1 DACCLK−/DACCLK+ Negative/Positive DAC Clock Input (DACCLK).
E11, E12, F11, F12, G11, G12 AVSS Analog Supply Ground Shield. Tie to AVSS at the DAC.
E13 IRQ/UNSIGNED
If PIN_MODE = 0, IRQ: Active low open-drain interrupt request
output, pull up to DVDD33 with 10 kΩ resistor.
If PIN_MODE = 1, UNSIGNED: Digital input pin where 0 = twos
complement input data format, 1 = unsigned.
E14 RESET/PD If PIN_MODE = 0, RESET: 1 resets the AD9735.
If PIN_MODE = 1, PD: 1 puts the AD9735 in the power-down state.
F13 CSB/2×
See the
Serial Peripheral Interface section and the Pin Mode
Operation section for pin description.
F14 SDIO/FIFO See the Pin Mode Operation section for pin description.
G13 SCLK/FSC0 See the Pin Mode Operation section for pin description.
G14 SDO/FSC1 See the Pin Mode Operation section for pin description.
H1, H2, H3, H4, H11, H12, H13, H14, J1, J2,
J3, J4, J11, J12, J13, J14
DVDD18 1.8 V Digital Supply.
K1, K2, K3, K4, K11, K12, L2, L3, L4, L5, L6,
L9, L10, L11, L12, M3, M4, M5, M6, M9,
M10, M11, M12
DVSS Digital Supply Ground.