ADAQ23876BBCZ datasheet(10/37 Pages) AD

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Data Sheet

ADAQ23876

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

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Rev. 0 | 10 of 37

Figure 5. 100-Ball CSP_BGA Pin Configuration, Top View

Table 6. Pin Function Descriptions

Pin No.

Mnemonic

Type1

Description

A1, A7, A9, B7, B9, C6, C7, C8, C9,

C10, D2, D4, D5, D7, D8, D9, E1, E2,

E3, E5, E6, E7, E8, E9, F3, F4, F5, F6,

F7, F8, F9, F10, G1, G2, G3, G4, G5,

G6, G7, G8, G9, H2, H3, H4, H5, H6,

H7, H8, H9, J2, J5, J6, J7, J8, J9, K1,

K2, K4

GND

Power Supply Ground.

A2, B2

IN1−

Negative Input of the FDA Connected to 1000 Ω Resistor.

A3, B3

IN1+

Positive Input of the FDA Connected to 1000 Ω Resistor.

A4, B4

IN2−

Negative Input of the FDA Connected to 1571 Ω Resistor.

A5, B5

IN2+

Positive Input of the FDA Connected to 1571 Ω Resistor.

SJ−

Negative Input of the FDA.

SJ+

Positive Input of the FDA.

VIO

2.5 V Analog and Output Power Supply. The range of VIO is 2.375 V to 2.625 V. Bypass this pin to

GND with an at least 2.2 μF (0402, X5R) ceramic capacitor.

A10

CNV+

Conversion Start LVDS Input. A rising edge on CNV+ puts the internal sample-and-hold in hold mode

and starts a conversion cycle. CNV+ can be also driven with a 2.5 V CMOS signal if CNV− is

connected to GND.

PDB_AMP

Active Low. Connect this pin to GND to power down the fully differential ADC driver. Otherwise,

connect this pin to VS+.

TWOLANES

Digital Input that Enables Two-Lane Output Mode. When TWOLANES is connected high (two-lane

output mode), the ADAQ23876 outputs two bits at a time on DA−/DA+ and DB−/DB+. When

TWOLANES is low (one-lane output mode), the ADAQ23876 outputs one bit at a time on DA−/DA+,

and DB−/DB+ are disabled. Logic levels are determined by VIO.

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