MAX153
1Msps, µP-Compatible,
8-Bit ADC with 1µA Power-Down
General Description
The MAX153 high-speed, microprocessor (µP)-compatible,
8-bit analog-to-digital converter (ADC) uses a half-flash
technique to achieve a 660ns conversion time, and digitiz-
es at a rate of 1M samples per second (Msps). It operates
with single +5V or dual ±5V supplies and accepts either
unipolar or bipolar inputs. A
POWERDN
(power-down)
pin reduces current consumption to a typical value of 1µA
(with 5V supply). The part returns from power-down to
normal operating mode in less than 200ns, providing large
reductions in supply current in applications with burst-
mode input signals.
The MAX153 is DC and dynamically tested. Its µP interface
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/
reference arrangement enables ratiometric operation.
Features
● 660ns Conversion Time
● Power-Up/Power-Down in 200ns
● Internal Track/Hold
● 1Msps Throughput
● Low Power
40mW (Operating Mode)
5µW (Power-Down Mode)
● 1MHz Full-Power Bandwidth
● 20-Pin Narrow DIP, SO, and SSOP Packages
● No External Clock Required
● Unipolar/Bipolar Inputs
● Single +5V or Dual ±5V Supplies
● Ratiometric Reference Inputs
Applications
●
●
●
●
●
●
●
Functional Diagram
V
DD
V
REF+
12
V
REF-
11
V
IN
1
4-BIT
FLASH
ADC
THREE-
STATE
DRIVERS
20
18
PWRDN
Cellular Telephones
Portable Radios
Battery-Powered Systems
Burst-Mode Data Acquisition
Digital-Signal Processing
Telecommunications
High-Speed Servo Loops
4-BIT
DAC
V
REF+
16
4-BIT
FLASH
ADC
(4 LSB)
TIMING AND CONTROL
CIRCUITRY
10
7
6
3
7
RD
7
INT
appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to
D0–D7
DATA
OUT
PINS
2–5,
14–17
MAX153
19
V
SS
GND MODE WR/RDY CS
19-4740; Rev 2; 1/12
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
