Rainbow Electronics MAX5890 - Manual (Page 8)

MAX5890
14-Bit, 600Msps, High-Dynamic-Performance
DAC with LVDS Inputs
8 _______________________________________________________________________________________
PIN NAME FUNCTION
1, 3, 5, 46, 48,
50, 52, 54, 56,
58, 60, 63, 65,
67
D2N, D1N, D0N,
D13N, D12N, D11N,
D10N, D9N, D8N,
D7N, D6N, D5N,
D4N, D3N
Differential Negative LVDS Inputs. Data bits D0–D13 (offset binary format).
2, 4, 45, 47,
49, 51, 53, 55,
57, 59, 62, 64,
66, 68
D1P, D0P, D13P,
D12P, D11P, D10P,
D9P, D8P, D7P, D6P,
D5P, D4P, D3P, D2P
Differential Positive LVDS Inputs. Data bits D0–D13 (offset binary format).
6–9 N.C. No Connection. Leave floating or connect to DGND.
10 DGND Digital Ground. Ground return for DV DD3.3 and DV DD1.8 .
11 DV DD3.3
Digital Supply Voltage. Accepts a 3.135V to 3.465V supply voltage range. Bypass with a
0.1µF capacitor to DGND.
12 PD
Power-Down Input. Set PD high to force the DAC into power-down mode. Set PD low for
normal operation. PD has an internal 2µA pulldown.
13, 42, 43, 44 N.C. No Connection. Leave floating or connect to AGND.
14, 21, 22, 25,
26, 31, 32
AV DD3.3
Analog Supply Voltage. Accepts a 3.135V to 3.465V supply voltage range. Bypass with a
0.1µF capacitor to AGND.
15, 20, 23, 24,
27, 30, 33
AGND Analog Ground. Ground return for AV DD3.3 and AV DD1.8 .
16 REFIO
Reference I/O. Output of the internal 1.2V precision bandgap reference. Bypass with a
0.1µF capacitor to AGND. REFIO can be driven with an external reference source.
17 FSADJ
Full-Scale Current Adjustment. Connect an external resistor R
SET
between FSADJ and
DACREF to set the output full-scale current. The output full-scale current is equal to 32 x
V
REF / R SET .
18 DACREF
Current-Set Resistor Return Path. Internally connected to ground, but do not use as
ground connection.
19, 34, 35 AV DD1.8
Analog Supply Voltage. Accepts a 1.71V to 1.89V supply voltage range. Bypass with a
0.1µF capacitor to AGND.
28 OUTN Complementary DAC Output. Negative terminal for current output.
29 OUTP DAC Output. Positive terminal for current output.
36, 41 AV CLK
Clock Supply Voltage. Accepts a 3.135V to 3.465V supply voltage range. Bypass with a
0.1µF capacitor to CGND.
37, 40 CGND Clock Supply Ground
38 CLKN
Complementary Converter Clock Input. Negative input terminal for differential converter
clock.
39 CLKP Converter Clock Input. Positive input terminal for differential converter clock.
61 DV DD1.8
Digital Supply Voltage. Accepts a 1.71V to 1.89V supply voltage range. Bypass with a
0.1µF capacitor to DGND.
— EP
Exposed Pad. Must be connected to common point for AGND, DGND, and CGND through
a low-impedance path. EP is internally connected to AGND, DGND, and CGND.
Pin Description