AD7920 Analog Devices, AD7920 Datasheet - Page 13

• Manufacturer Part Number: AD7920
• Description: 250 kSPS, 12- Bit ADC in 6 Lead SC70
• Manufacturer: Analog Devices

Specifications of AD7920

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 250kSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SC70,SOP

CIRCUIT INFORMATION
The AD7910/AD7920 are fast, micropower, 10-bit/12-bit,
single-supply A/D converters, respectively. The parts can be
operated from a 2.35 V to 5.25 V supply. When operated from
either a 5 V supply or a 3 V supply, the AD7910/AD7920 are
capable of throughput rates of 250 kSPS when provided with a
5 MHz clock.
The AD7910/AD7920 provide the user with an on-chip track-
and-hold, A/D converter, and a serial interface housed in a tiny
6-lead SC70 package or 8-lead MSOP package, which offers the
user considerable space saving advantages over alternative
solutions.
Rev. C | Page 13 of 24
The serial clock input accesses data from the part but also
provides the clock source for the successive approximation A/D
converter. The analog input range is 0 V to V
reference is not required for the ADC and there is no reference
on-chip. The reference for the AD7910/AD7920 is derived from
the power supply and thus gives the widest dynamic input
range.
The AD7910/AD7920 also feature a power-down option to
allow power saving between conversions. The power-down
feature is implemented across the standard serial interface, as
described in the Modes of Operation section.
AD7910/AD7920
DD
. An external