AD6652PCB datasheet(12/76 Pages) AD

12 / 76 page

AD6652

Rev. 0 | Page 12 of 76

Table 10. Pin Function Descriptions

Pin No.

Mnemonic

Type

Function

POWER SUPPLY

A13, B13, C13, D13, E13, F13, G13, H13, J13, K13, L13, M13, N13, P13, R13,

T13, A14, B14, C14, D14, E14, M14, N14, P14, R14

AVDD

Power

3.0 V Analog Supply, 25 Pins.

D4, D5, D6, D7, E4, E5, E6, E7, M8, M9, M10, M11, N8, N9, N10, N11

VDD

Power

2.5 V Digital Core Supply, 16 Pins.

D8, D9, D10, D11, D12, E8, E9, E10, E11, E12, F12, G12, H12, J12, K12, L12,

M4, M5, M6, M7, M12, N4, N5, N6, N7, N12, P6

VDDIO

Power

3.3 V Digital I/O Supply, 27 Pins.

A1, B5, F2, F4, F5, F6, F7, F8, F9, F10, F11, G4, G5, G6, G7, G8, G9, G10, G11,

H4, H5, H6, H7, H8, H9, H10, H11, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, K4,

K5, K6, K7, K8, K9, K10, K11, L3, L4, L5, L6, L7, L8, L9, L10, L11, P1, T1

DGND

Ground

Digital Ground, 56 Pins.

A15, A16, B15, B16, C15, D15, E15, E16, F14, F15, F16, G14, H14, H15, J14,

J15, K14, L14, L15, L16, M15, M16, N15, P15, R15, R16, T15, T16

AGND

Ground

Analog Ground, 28 Pins.

MISCELLANEOUS

E3, P9, P10, P12, R7, R8, R9, R10, R11, T7, T8, T9, T10

N/A

No Connect, 13 Pins.

DNC

N/A

Do Not Connect.

Pin No.

Mnemonic

Type

Function

ADC INPUTS

P16

VIN+A

Input

Differential Analog Input Pin (+) for Channel A.

N16

VIN−A

Input

Differential Analog Input Pin (−) for Channel A.

C16

VIN+B

Input

Differential Analog Input Pin (+) for Channel B.

D16

VIN−B

Input

Differential Analog Input Pin (−) for Channel B.

J16

VREF

I/O

Voltage Reference Input/Output.

H16

SENSE

Input

Voltage Reference Mode Select.

T14

ACLK

Input

ADC Master Clock.

B12

DUTYEN

Input

Duty Cycle Stabilizer, Active High.

A12, R12

PDWN1

Input

Power-Down Enable, Active High.

T12

SHRDREF

Input

Shared Voltage Reference Select, Low = Independent, High = Shared.

ADC OUTPUTS

A11

OTRA

Output

Out-of-Range Indicator for Channel A, High = Overrange.

P11

OTRB

Output

Out-of-Range Indicator for Channel B, High = Overrange.

K16

REFTA

Output

Top Reference Voltage, Channel A.

G16

REFTB

Output

Top Reference Voltage, Channel B.

K15

REFBA

Output

Bottom Reference Voltage, Channel A.

G15

REFBB

Output

Bottom Reference Voltage, Channel B.

DDC INPUTS

RESET

Input

Master Reset, Active Low.

T11

DCLK

Input

DDC Master Clock.

PCLK

I/O

Link Port Clock Output or Parallel Port Clock Input.

PACH1_LACLKIN 2

I/O

Channel ID Output Bit, MSB, for Parallel Port A, or Link Port A Data Ready Input.

Function depends on logic state of 0x1B:7 of output port control register.

PBCH1_LBCLKIN2

I/O

Channel ID Output Bit, MSB, for Parallel Port B, or Link Port B Data Ready Input.

Function depends on logic state of 0x1D:7 of output port control register.

B10

SYNCA3

Input

Hardware Sync, Pin A, Routed to All Receiver Channels.

C10

SYNCB3

Input

Hardware Sync, Pin B, Routed to All Receiver Channels.

SYNCC3

Input

Hardware Sync, Pin C, Routed to All Receiver Channels.

A10

SYNCD3

Input

Hardware Sync, Pin D, Routed to All Receiver Channels.

K3, J1, M1,

CHIP_ID[3:0]3

Input

Chip ID Selector, Four Pins, Used in Conjunction with Access Control Register

Bits 5–2.

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