Rainbow Electronics MAX152 - Manual

_______________General Description
The MAX152 high-speed, microprocessor (µP)-com-
patible, 8-bit analog-to-digital converter (ADC) uses a
half-flash technique to achieve a 1.8µs conversion
time, and digitizes at a rate of 400k samples per sec-
ond (ksps). It operates with single +3V or dual ±3V
supplies and accepts either unipolar or bipolar inputs.
A
–
P
—
O
—
W
—
E
—
R
—
D
—
O
—
W
—
N
–
pin reduces current consumption to
a typical value of 1µA. The part returns from power-
down and acquires an input signal in less than 900ns,
providing large reductions in supply current in applica-
tions with burst-mode input signals.
The MAX152 is DC and dynamically tested. Its µP inter-
face appears as a memory location or input/output port that
requires no external interface logic. The data outputs use
latched, three-state buffered circuitry for direct connection
to a µP data bus or system input port. The ADC's input/ref-
erence arrangement enables ratiometric operation. A fully-
assembled evaluation kit provides a proven PC board lay-
out to speed prototyping and design.
_______________________Applications
Cellular Telephones
Portable Radios
Battery-Powered Systems
Burst-Mode Data Acquisition
Digital Signal Processing
Telecommunications
High-Speed Servo Loops
___________________________Features
♦ Single +3.0V to +3.6V Supply
♦ 1.8µs Conversion Time
♦ Power-Up in 900ns
♦ Internal Track/Hold
♦ 400ksps Throughput
♦ Low Power: 1.5mA (Operating Mode)
1µA (Power-Down Mode)
♦ 300kHz Full-Power Bandwidth
♦ 20-Pin DIP, SO and SSOP Packages
♦ No External Clock Required
♦ Unipolar/Bipolar Inputs
♦ Ratiometric Reference Inputs
♦ 2.7V Version Available – Contact Factory
______________Ordering Information
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
MAX152
+3V, 8-Bit ADC with 1µA Power-Down
________________________________________________________________ Maxim Integrated Products 1
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
VDD
VSS
PWRDN
D7 (MSB)
D6
D5
D4
CS
VREF+
VREF-
VIN
D0 (LSB)
D1
D2
D3
WR/RDY
MODE
RD
INT
GND
DIP/SO/SSOP
MAX152
__________________Pin Configuration
TOP VIEW
THREE-
STATE
DRIVERS
4-BIT
DAC
4-BIT
FLASH
ADC
4-BIT
FLASH
ADC
(4LSB)
D0-D7
DATA
OUT
PINS
2-5,
14-17
VREF+
VREF-
VIN
12
11
1
PWRDN
18
20
VDD
10
WR/RDY CS GND
7 6 13 8 9 19
RD INT VSS MODE
MAX152
TIMING AND CONTROL CIRCUITRY
VREF+
16
________________Functional Diagram
Call toll free 1-800-998-8800 for free samples or literature.
PART TEMP. RANGE
MAX152CPP 0°C to +70°C
MAX152CWP 0°C to +70°C
MAX152CAP 0°C to +70°C
MAX152C/D 0°C to +70°C
MAX152EPP -40°C to +85°C
MAX152EWP -40°C to +85°C
MAX152EAP -40°C to +85°C
MAX152MJP -55°C to +125°C
PIN-PACKAGE
20 Wide SO
20 SSOP
Dice*
20 Plastic DIP
20 Wide SO
20 SSOP
20 CERDIP**
20 Plastic DIP
19-0119; Rev. 1; 12/93
Evaluation Kit Manual
Follows Data Sheet