AD1580BRTZ Analog Devices Inc, AD1580BRTZ Datasheet - Page 10

• Manufacturer Part Number: AD1580BRTZ
• Description: IC, V REF, 1.2V, 5MA, SOT23 3
• Manufacturer: Analog Devices Inc

Specifications of AD1580BRTZ

• Topology: Shunt
• Reference Voltage: 1.2V
• Reference Voltage Tolerance: 1mV
• Temperature Coefficient: 50ppm/°C
• Voltage Reference Case Style: SOT-23
• No. Of Pins: 3
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD1580
The AD1580 is ideal for creating the reference level to use with 12-bit
multiplying DACs, such as the AD7943, AD7945, and AD7948.
In the single-supply bias mode (see Figure 26), the impedance
seen looking into the I
the AD1580 drives I
of additional linearity error results. The buffer amp eliminates
any linearity degradation that could result from variations in
the reference level.
OUT2
OUT2
and AGND directly, less than 0.2 LSBs
terminal changes with DAC code. If
Rev. D | Page 10 of 12
V
IN
V
REF
AD1580
41.2kΩ
3.3V
AD7943/
AD7945/
AD7948
V
DGND
Figure 26. Single-Supply System
DD
3.3V
DAC
SIGNAL GROUND
RBF
A1
I
I
AGND
OUT1
OUT2
C1
A1
A1: OP295
AD822
OP2283
V
OUT