AD7819 Analog Devices, AD7819 Datasheet - Page 4

• Manufacturer Part Number: AD7819
• Description: +2.7 V to +5.5 V, 200 kSPS 8-Bit Sampling ADC
• Manufacturer: Analog Devices

Specifications of AD7819

• Resolution (bits): 8bit
• # Chan: 1
• Sample Rate: 200kSPS
• Interface: Par
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: DIP,SOIC,SOP

AD7819
Pin
No.
1
2
3
4
5
6
7
8–15
16
Mnemonic
V
V
GND
CONVST
CS
RD
BUSY
DB0–DB7
V
REF
IN
DD
Data Bit 0 to 7. These outputs are three-state TTL-compatible.
Description
Reference Input, 1.2 V to V
Analog Input, 0 V to V
Analog and Digital Ground.
Convert Start. A low-to-high transition on this pin initiates a 1.5 µs pulse on an internally generated
CONVST signal. A high-to-low transition on this line initiates the conversion process if the internal
CONVST signal is low. Depending on the signal on this pin at the end of a conversion, the AD7819
automatically powers down.
Chip Select. This is a logic input. CS is used in conjunction with RD to enable outputs.
Read Pin. This is a logic input. When CS is low and RD goes low, the DB7–DB0 leave their high
impedance state and data is driven onto the data bus.
ADC Busy Signal. This is a logic output. This signal goes logic high during the conversion process.
Positive power supply voltage, 2.7 V to 5.5 V.
PIN FUNCTION DESCRIPTIONS
CONVST
PIN CONFIGURATION
REF
BUSY
V
GND
DB0
REF
V
RD
CS
.
IN
DD
1
2
3
4
5
6
7
8
DIP/SOIC
.
(Not to Scale)
AD7819
TOP VIEW
16
15
14
13
12
11
10
9
V
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DD