MAX1020BETX+ Maxim Integrated Products, MAX1020BETX+ Datasheet - Page 33

• Manufacturer Part Number: MAX1020BETX+
• Description: IC ADC/DAC 10BIT 36-TQFN-EP
• Manufacturer: Maxim Integrated Products
• Type: ADC, DACr

Specifications of MAX1020BETX+

• Resolution (bits): 10 b
• Sampling Rate (per Second): 225k
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Voltage Supply Source: Analog and Digital
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 21. DAC Power-Up and Power-Down Commands
Figures 6–9 illustrate the conversion timing for the
MAX1020/MAX1022/MAX1057/MAX1058. All 10-bit con-
version results are output in 2-byte format, MSB first,
with four leading zeros and with the LSB followed by 2
sub-bits. Data appears on DOUT on the falling edges of
SCLK. Data is binary for unipolar mode and two’s com-
plement for bipolar mode and temperature results. See
Figures 3, 4, and 5 for input/output and temperature-
transfer functions.
Figure 3 shows the unipolar transfer function for single-
ended or differential inputs. Figure 4 shows the bipolar
C3 C2 C1 C0
1
1
1
1
1
CONTROL
BITS
1
1
1
1
1
1
1
1
1
1
1 — — — — — — — — 0
1 — — — — — — — — 0
1 — — — — — — — — 1
1 — — — — — — — — 0
1 — — — — — — — — 1
10-Bit, Multichannel ADCs/DACs with FIFO,
______________________________________________________________________________________
Temperature Sensing, and GPIO Ports
ADC Transfer Functions
DATA BITS
Output-Data Format
D3 D2 D1 D0
0
1
0
0
1
1
0
0
0
1
X
X
X
X
X
DESCRIPTION
Power-Down 1
Power-Down 2
Power-Down 3
Power-Down 4
Power-Up
transfer function for differential inputs. Code transitions
occur halfway between successive-integer LSB values.
Output coding is binary, with 1 LSB = V
(MAX1057) and 1 LSB = V
MAX1022/MAX1058) for unipolar and bipolar operation,
and 1 LSB = +0.125°C for temperature measurements.
Bipolar true-differential results and temperature-sensor
results are available in two’s complement format, while
all others are in binary. See Tables 6, 7, and 8 for
details on which setting (unipolar or bipolar) takes
precedence.
In unipolar mode, AIN+ can exceed AIN- by up to
V
other by up to V
REF1
. In bipolar mode, either input can exceed the
Power up individual DAC buffers indicated by data
in DAC0 through DAC7. A one indicates the DAC
output is connected and active. A zero does not
affect the DAC’s present state.
Power down individual DAC buffers indicated by
data in DAC0 through DAC7. A one indicates the
DAC output is disconnected and high impedance.
A zero does not affect the DAC’s present state.
Power down individual DAC buffers indicated by
data in DAC0 through DAC7. A one indicates the
DAC output is disconnected and pulled to AGND
with a 1kΩ resistor. A zero does not affect the DAC’s
present state.
Power down individual DAC buffers indicated by
data in DAC0 through DAC7. A one indicates the
DAC output is disconnected and pulled to AGND
with a 100kΩ resistor. A zero does not affect the
DAC’s present state.
Power down individual DAC buffers indicated by
data in DAC0 through DAC7. A one indicates the
DAC output is disconnected and pulled to REF1 with
a 100kΩ resistor. A zero does not affect the DAC’s
present state.
REF1
/ 2.
FUNCTION
REF1
/ 1024 (MAX1020/
REF1
/ 1024
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