AD8260WACPZ-WP Analog Devices, AD8260WACPZ-WP Datasheet - Page 7

• Manufacturer Part Number: AD8260WACPZ-WP
• Description: High Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps; Package: LFCSP (5x5x.85mm) w/2.7exposed pad; No of Pins: 32; Temperature Range: Industrial
• Manufacturer: Analog Devices

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 3. Pin Function Descriptions
Pin No.
1, 19
2
3
4
5
6
7
8
9, 16
10, 20
11
12
13
14
15
17
18
21, 22
23, 24
25, 26
27
28
29
30
31
32
1
Pins with the same name are connected internally.
1
1
1
1
1
1
Mnemonic
VMDO
TXEN
VMDI
VNCM
VPSB
ENBL
VGAP
VGAN
VNGR
VPSR
GNS3
GNS2
GNS1
GNS0
PRAO
FDBK
PRAI
VPOS
TXOP
VNEG
TXFB
INPN
INRN
INRP
INPP
VOCM
Description
VMID Buffer Output. Requires robust ac decoupling with a capacitance of 0.1 μF capacitor or greater.
Driver Enable. Logic threshold = 1.1 V with ±0.2 V hysteresis.
VMID Input Voltage. Normally decoupled with a 0.1 μF capacitor. When pulled to VNCM, the VMID buffer shuts
down. This can be useful when using the part with dual supplies or when an external midpoint generator is used.
Negative Supply for Bias Cell, VMID Cell, and Logic Inputs. (Ground this pin in applications.)
Positive Supply for Bias Cell and VMID Cell.
Enable. Logic threshold = 1.1 V. When low, the AD8260 is disabled and the supply current is 35 μA when TXEN
and all GNSx pins are also low.
Positive VGA Output (Needs to Be Ac-Coupled for Single Supply).
Negative VGA Output (Needs to Be Ac-Coupled for Single Supply).
Negative Supply for Preamplifier and DGA (Set to −VPOS for Dual Supply; GND for Single Supply).
Positive Supply for Preamplifier, DGA, and GNSx Logic Decoder.
MSB for Gain Control. Logic threshold = 1.1 V.
Gain Control Bit. Logic threshold = 1.1 V.
Gain Control Bit. Logic threshold = 1.1 V.
LSB for Gain Control. Logic threshold = 1.1 V.
Preamplifier Output.
Negative Input of Preamplifier.
Positive Input of Preamplifier.
Positive Supply for Driver Amplifier.
Driver Output.
Negative Supply for Driver Amplifier (Set to −VPOS for Dual Supply; GND for Single Supply).
Feedback for Driver Amplifier.
Negative Driver Amplifier Input.
Negative Gain Resistor Input for Driver Amplifier.
Positive Gain Resistor Input for Driver Amplifier.
Positive Driver Amplifier Input.
Output Common Mode Pin. Normally connected to Pin VMDO.
VMDO
VNCM
VGAP
VGAN
TXEN
VPSB
ENBL
VMDI
1
2
3
4
5
6
7
8
Figure 2. Pin Configuration
32
9
10
Rev. 0 | Page 7 of 32
31
(Not to Scale)
PIN 1
INDICATOR
11
30
AD8260
TOP VIEW
29
12
13
28
14
27
15 16
26
25
24
23
22
21
20
19
18
17
TXOP
TXOP
VPOS
VPOS
VPSR
VMDO
PRAI
FDBK
AD8260