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Data Sheet

AD9986

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

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Rev. 0 | 19 of 37

Table 20. Pin Function Descriptions

Pin No.

Mnemonic

Type

Description

E9, P9

NVG1_OUT

Output

Analog −1 V Supply Outputs from NVG. Decouple NVG1_OUT

to GND with a 0.1 μF capacitor.

D8, E8, E10, P8, P10, R8

VNN1

Input

Analog −1 V Supply Inputs for ADC Buffer and Reference.

Connect these pins to the adjacent NVG1_OUT pins.

C9, T9,

BVNN2

Output

Decoupling Pin for the Internally Generated Analog −2 V ADC

Buffer Supply. Decouple each BVNN2 pin to GND with a 0.1

μF capacitor.

C10, T10

BVDD3

Output

Decoupling Pin for the Internally Generated Analog 3 V

ADC Buffer Supply. Decouple BVDD3 to GND with a 0.1 μF

capacitor.

E5, F5, N5, P5

DAVDD1

Input

Digital Analog 1.0 V Supply Inputs.

F10, H9, H11, J9, J11, K9, K11, L9, L11, M9

DVDD1

Input

Digital 1.0 V Supply Inputs.

J6, J7, K6, K7

DVDD1_RT

Input

Digital 1.0 V Supply Inputs for Retimer Block.

DCLKVDD1

Input

Digital 1.0 V Clock Generation Supply.

A16, B16, C16, D16, E16, F16, G16, H16, M16, N16,

P16, R16, T16, U16, V16

SVDD1

Input

Digital 1.0 V Supply Inputs for SERDES Deserializer and

Serializer.

K15

SVDD2_PLL

Input

Digital 2.0 V Supply Input for SERDES LDO.

J16, K16

SVDD1_PLL

Input

Digital 1.0 V Supply Inputs for SERDES Clock Generation and

PLL.

C13, F9, T13

DVDD1P8

Input

Digital Interface and Temperature Monitoring Unit (TMU)

Supply Inputs (Nominal 1.8 V).

A1, A3, A4, A7, A8, A11, A17, A18, B2 to B6, B9, B10,

B14, B15, C2, C5 to C8, C11, C17, C18, D1, D5, D9,

D14, D15, E1, E4, E6, E17, E18, F2, F4, F6 to F8, F14,

F15, G2 to G5, G17, G18, H1, H5 to H8, H10, H12, H14,

H15, J2, J8, J10, J12, J14, J15, J17, J18, K2, K8, K10,

K12, K14, K17, K18, L1, L5 to L8, L10, L12, L14, M2 to

M5, M10, M17, M18, N2, N4, N6 to N8, N14, N15, P1,

P4, P6, P17, P18, R1, R5, R9, R14, R15, T2, T5 to T8,

T11, T17, T18, U2 to U6, U9, U10, U14, U15, V1, V3, V4,

V7, V8, V11, V17, V18

GND

Input/output

Ground References.

ANALOG OUTPUTS

B1, C1

DAC0P, DAC0N

Output

DAC0 Output Currents, Ground Referenced. Tie these pins to

GND if unused.

G1, F1

DAC1P, DAC1N

Output

DAC1 Output Currents, Ground Referenced. Tie these pins to

GND if unused.

M1, N1

DAC2P, DAC2N

Output

DAC2 Output Currents, Ground Referenced. Tie these pins to

GND if unused.

U1, T1

DAC3P, DAC3N

Output

DAC3 Output Currents, Ground Referenced. Tie these pins to

GND if unused.

ISET

Output

DAC Bias Current Setting Pin. Connect this pin with a 5 kΩ

resistor to GND.

C3, C4

ADCDRVN, ADCDRVP,

Output

Optional Clock Output (for Example, ADC Clock Driver for an

External ADC). These pins are disabled by default. Leave the

pins floating if unused.

B8, U8

VCM0, VCM1

Output

ADC Buffer Common-Mode Output Voltage. Decouple these

pins to GND with a 0.1 μF capacitor.

VCO_VREG

Output

PLL LDO Regulator Output. Decouple this pin to GND with a

2.2 μF capacitor.

TMU_REFN

Output

TMU ADC Negative Reference. Connect this pin to GND.

G10

TMU_REFP

Output

TMU ADC Positive Reference. Connect this pin to DVDD1P8.

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