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Pin Descriptions
PIN NO.
PIN NAME
PIN DESCRIPTION
39-32
QD7 (MSB) Through
QD0 (LSB)
Digital Data Bit 7, the Most Significant Bit through Digital Data Bit 0, the Least Significant Bit, of the Q
channel.
1-5, 48-46
ID7 (MSB) Through
ID0 (LSB)
Digital Data Bit 7, the Most Significant Bit through Digital Data Bit 0, the Least Significant Bit, of the I
channel.
8
SLEEP
Control Pin for Power-Down Mode. Sleep Mode is active high; connect to ground for Normal Mode. Sleep
pin has internal 20
A active pulldown current.
15
REFLO
Connect to analog ground to enable internal 1.2V reference or connect to AVDD to disable.
23
REFIO
Reference voltage input if internal reference is disabled and reference voltage output if internal reference is
enabled. Use 0.1
F cap to ground when internal reference is enabled.
22
FSADJ
Full Scale Current Adjust. Use a resistor to ground to adjust full scale output current. Full Scale Output
Current Per Channel = 32 x IFSADJ.
14, 24
ICOMP1, QCOMP1
Reduces noise. Connect each to AVDDwith 0.1F capacitor. The ICOMP1 and QCOMP1 pins MUST be
tied together externally.
13, 18, 19, 25
AGND
Analog Ground Connections.
17
IOUTB
The complementary current output of the I channel. Bits set to all 0s gives full scale current.
16
IOUTA
Current output of the I channel. Bits set to all 1s gives full scale current.
20
QOUTB
The complementary current output of the Q channel. Bits set to all 0s gives full scale current.
21
QOUTA
Current output of the Q channel. Bits set to all 1s gives full scale current.
11, 27
NC
No Connect. Recommended: Connect to ground.
12, 26
AVDD
Analog Supply (+2.7V to +5.5V).
6, 7, 10, 28, 30,
31, 41, 44
DGND
Digital Ground.
9, 29, 40, 45
DVDD
Supply voltage for digital circuitry (+2.7V to +5.5V).
43
ICLK
Clock input for I channel. Positive edge of clock latches data.
42
QCLK
Clock input for Q channel. Positive edge of clock latches data.
HI5628