AMC7836IPAPR datasheet(4/88 Pages) TI1

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AMC7836

SLAS986C – NOVEMBER 2014 – REVISED APRIL 2016

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Pin Functions

DESCRIPTION

NAME

NO.

I/O

ADC_0

Bipolar analog inputs. These pins are typically used to monitor the DAC group-C outputs. The

input range of these channels is –12.5 to 12.5 V.

ADC_1

ADC_2

ADC_3

ADC_4

Bipolar analog inputs. These pins are typically used to monitor the DAC group-D outputs. The

input range of these channels is –12.5 to 12.5 V.

ADC_5

ADC_6

ADC_7

ADC_8

Bipolar analog inputs. These pins are typically used to monitor the DAC group-B outputs. The

input range of these channels is –12.5 to 12.5 V.

ADC_9

ADC_10

ADC_11

ADC_12

Bipolar analog inputs. These pins are typically used to monitor the DAC group-A outputs. The

input range of these channels is –12.5 to 12.5 V.

ADC_13

ADC_14

ADC_15

AGND1

Analog ground. These pins are the ground reference point for all analog circuitry on the device.

Connect the AGND1, AGND2, and AGND3 pins to the same potential (AGND). Ideally, the

analog and digital grounds should be at the same potential (GND) and must not differ by more

than ±0.3 V.

AGND2

AGND3

AVCC_AB

Positive analog power for DAC groups A and B. The AVCC_AB and AVCC_CD pins must be

connected to the same potential (AVCC).

AVCC_CD

Positive analog power for DAC groups C and D. The AVCC_AB and AVCC_CD pins must be

connected to the same potential (AVCC).

AVDD

Analog supply voltage (4.5 V to 5.5 V). This pin must have the same value as the DVDD pin.

AVEE

Lowest potential in the system. This pin is typically tied to a negative supply voltage but if all

DACs are set in a positive output range, this pin can be connected to the analog ground. This

pin also acts as the negative analog supply for DAC group A. This pin sets the power-on-reset

and clamp voltage values for the DAC group A.

AVSSB

Negative analog supply for DAC group B. This pin sets the power-on-reset and clamp voltage

values for the DAC group B. This pin is typically tied to the AVEE pin for the negative output

ranges or AGND for the positive output ranges.

AVSSC

Negative analog supply for DAC group C. This pin sets the power-on-reset and clamp voltage

values for the DAC group C. This pin is typically tied to the AVEE pin for the negative output

ranges or AGND for the positive output ranges.

AVSSD

Negative analog supply for DAC group D. This pin sets the power-on-reset and clamp voltage

values for the DAC group D. This pin is typically tied to the AVEE pin for the negative output

ranges or AGND for the positive output ranges.

Active-low serial-data enable. This input is the frame-synchronization signal for the serial data.

When this signal goes low, it enables the serial interface input shift register.

DAC_A0

DAC group A. These DAC channels share the same range and clamp voltage. If any of the

other DAC groups is in a negative voltage range, DAC group A should be in a negative

voltage range as well.

DAC_A1

DAC_A2

DAC_A3

DAC_B4

DAC group B. These DAC channels share the same range and clamp voltage.

DAC_B5

DAC_B6

DAC_B7

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