AFE7222
AFE7225
SLOS711B –NOVEMBER 2011–REVISED MARCH 2012
www.ti.com
Table 2-1. Pin Configuration: CMOS Input/Output Mode
PIN
DESCRIPTION
NO.
1
NAME
AVDD18_ADC
INN_B_ADC
INP_B_ADC
AVDD18_ADC
INN_A_ADC
INP_A_ADC
AVDD18_ADC
CLKINN
1.8V supply for RX ADCs
2
RX ADC channel B analog input, negative
RX ADC channel B analog input, positive
1.8V supply for RX ADCs
3
4
5
RX ADC channel A analog input, negative
RX ADC channel A analog input, positive
1.8V supply for RX ADCs
6
7
8
main clock input, negative side if differential mode, TX side if single-ended 2 clock mode
main clock input, positive side if differential mode, RX side if single-ended 2 clock mode
1.8V supply for Clocking circuit
9
CLKINP
10
11
12
13
14
15
16
17
DVDD18_CLK
AVDD3_DAC
IOUTP_A_DAC
IOUTN_A_DAC
AVDD3_DAC
IOUTP_B_DAC
IOUTN_B_DAC
AVDD3_DAC
3V supply for TX DACs
TX DAC channel A current output, positive (current sink DACs)
TX DAC channel A current output, negative (current sink DACs)
3V supply for TX DACs
TX DAC channel B current output, positive (current sink DACs)
TX DAC channel B current output, negative (current sink DACs)
3V supply for TX DACs
sets the TX DAC output current (resistor from pin to ground). Use 960 Ohm to set a full scale current of
20 mA.
18
BIASJ
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
DVDD18_DAC
AUXDAC_A
AUXDAC_B
AVDD3_AUX
AUXADC_A
AUXADC_B
AVDD18_ADC
DACDATA11
DACDATA10
DACDATA9
DACDATA8
DACDATA7
DACDATA6
DVDD18
1.8V DAC digital supply
auxiliary DAC channel A output, current sourcing up to 7.5mA (SPI programmable)
auxiliary DAC channel B output, current sourcing up to 7.5mA (SPI programmable)
3V supply for auxiliary ADC/DACs
auxiliary ADC channel A input
auxiliary ADC channel B input
1.8V supply for RX ADCs
CMOS data input for TX data, MSB of TX DACs
CMOS data input for TX data
CMOS data input for TX data
CMOS data input for TX data
CMOS data input for TX data
CMOS data input for TX data
1.8V supply for digital interface
DACDATA5
DAC_DCLKIN
DACDATA4
DACDATA3
DACDATA2
DACDATA1
DACDATA0
SYNCIN
CMOS data input for TX data
CMOS clock input for TX data. Send clock with data.
CMOS data input for TX data
CMOS data input for TX data
CMOS data input for TX data
CMOS data input for TX data
CMOS data input for TX data. LSB of TX DACs
CMOS sync input. Used to reset internal clock dividers and reset TX data FIFO pointer
1.8V supply for digital interface
DVDD18
ADCDATA11
ADCDATA10
ADCDATA9
ADCDATA8
ADCDATA7
CMOS data output for RX data, MSB of RX ADCs
CMOS data output for RX data
CMOS data output for RX data
CMOS data output for RX data
CMOS data output for RX data
4
DEVICE INFORMATION
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