ADCA5191ACPZ-R7 datasheet(7/24 Pages) AD

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Data Sheet

ADCA5191

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

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Rev. 0 | 7 of 24

Figure 2. Pin Configuration

Table 9. Pin Function Descriptions

Pin No.

Mnemonic

Description

1, 4, 5, 8, 9, 10, 12, 13, 15,

16, 17, 21, 24, 25, 26, 28, 29,

31, 32

No Connect. Do not connect to these pins. Leave these pins floating.

2, 3

RFIP

Positive RF Amplifier Input. RFIP and RFIN form a differential input.

6, 7

RFIN

Negative RF Amplifier Input. RFIP and RFIN form a differential input.

BIASA

BIASA (together with BIASB) supplies a portion (~10%) of the IDD and controls the overall bias current of the amplifier.

Configure the BIASA and BIASB pins as shown in Figure 41 with the bias resistor (RBIAS) controlling IDD as illustrated in

Figure 42. Keep the network of passive components between BIASA and VDD close to the device package to minimize

parasitics.

BIAS2A

BIAS2A (together with BIAS2B) provides additional RF tuning or bias adjustment for special applications. However, BIAS2A

and BIAS2B are normally left floating.

18, 19

RFON

Negative Amplifier RF Output. A choke inductor is required to provide dc current and RF isolation. A dc blocking capacitor is

also required.

RSET

Bias Resistor. Place a 1% resistor between RSET and ground.

22 ,23

RFOP

Positive Amplifier RF Output. A choke inductor is required to provide dc current and RF isolation. A dc blocking capacitor is

also required. See Figure 39, and Figure 40 for specific recommendations.

BIAS2B

BIAS2B (together with BIAS2A) provides additional RF tuning or bias adjustment for special applications. However, BIAS2B

and BIAS2A are normally left floating.

BIASB

BIASB (together with BIASA) supplies a portion (~10%) of the IDD and controls the overall bias current of the amplifier.

Configure the BIASB and BIASA pins as shown in Figure 41 with RBIAS controlling IDD as illustrated in Figure 42. Keep the

network of passive components between BIASB and VDD close to the device package to minimize parasitic.

EPAD

Exposed Pad. Solder the exposed paddle to a low impedance electrical and thermal ground plane.

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