AD9059 Datasheet PDF - Analog Devices
| Part Number | AD9059 | |
| Description | Dual 8-Bit 60 MSPS A/D Converter | |
| Manufacturers | Analog Devices | |
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Dual 8-Bit, 60 MSPS A/D Converter
AD9059
FEATURES
Dual 8-Bit ADCs on a Single Chip
Low Power: 400 mW Typical
On-Chip 2.5 V Reference and Track-and-Hold
1 V p-p Analog Input Range
Single 5 V Supply Operation
5 V or 3 V Logic Interface
120 MHz Analog Bandwidth
Power-Down Mode: <12 mW
APPLICATIONS
Digital Communications (QAM Demodulators)
RGB and YC/Composite Video Processing
Digital Data Storage Read Channels
Medical Imaging
Digital Instrumentation
FUNCTIONAL BLOCK DIAGRAM
AINA
VREF
AINB
VD
PWRDN
VDD
AD9059
T/H ADCA
8
D7A–D0A
2.5V
T/H
ADCB
ENCODE
8
D7B–D0B
GND
PIN CONFIGURATION
PRODUCT DESCRIPTION
The AD9059 is a dual 8-bit monolithic analog-to-digital converter
optimized for low cost, low power, small size, and ease of use.
With a 60 MSPS encode rate capability and full-power analog
bandwidth of 120 MHz typical, the component is ideal for
applications requiring multiple ADCs with excellent dynamic
performance.
To minimize system cost and power dissipation, the AD9059
includes an internal 2.5 V reference and dual track-and-hold
circuits. The ADC requires only a 5 V power supply and an
encode clock. No external reference or driver components are
required for many applications.
The AD9059’s single encode input is TTL/CMOS compatible
and simultaneously controls both internal ADC channels. The
parallel 8-bit digital outputs can be operated from 5 V or 3 V
supplies. A power-down function may be exercised to bring
total consumption to <12 mW when ADC data is not required
for lengthy periods of time. In power-down mode, the digital
outputs are driven to a high impedance state.
Fabricated on an advanced BiCMOS process, the AD9059
is available in a space-saving 28-lead shrink small outline
package (28-lead SSOP) and is specified over the industrial
temperature range (–40°C to +85°C).
Customers desiring single-channel digitization may consider the
AD9057, a single 8-bit, 60 MSPS monolithic based on the
AD9059 ADC core. The AD9057 is available in a 20-lead shrink
small outline package (20-lead SSOP) and is specified over the
industrial temperature range.
AINA 1
28 AINB
VREF 2
27 GND
PWRDN 3
26 ENCODE
VD 4
25 VD
GND 5
VDD 6
24 GND
AD9059
TOP VIEW 23 VDD
D7A (MSB) 7 (Not to Scale) 22 D7B (MSB)
D6A 8
21 D6B
D5A 9
20 D5B
D4A 10
19 D4B
D3A 11
18 D3B
D2A 12
17 D2B
D1A 13
16 D1B
D0A (LSB) 14
15 D0B (LSB)
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.
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AD9059
N
N+3
N+5
AIN N + 1
ENCODE
tA
tEH tEL
N+2
N+4
DIGITAL
OUTPUTS
tV
N–3
N–2
N–1
N
N+1
N+2
tPD
MIN TYP MAX
tA APERTURE DELAY
tEH PULSEWIDTH HIGH
6.7ns
2.7ns
166ns
tEL PULSEWIDTH LOW
6.7ns
166ns
tV OUTPUT VALID TIME 4.0ns 6.6n
tPD OUTPUT PROP DELAY
9.5ns 14.2ns
Figure 1. Timing Diagram
PIN CONFIGURATION
AINA 1
28 AINB
VREF 2
27 GND
PWRDN 3
26 ENCODE
VD 4
25 VD
GND 5
VDD 6
24 GND
AD9059
TOP VIEW 23 VDD
D7A (MSB) 7 (Not to Scale) 22 D7B (MSB)
D6A 8
21 D6B
D5A 9
20 D5B
D4A 10
19 D4B
D3A 11
18 D3B
D2A 12
17 D2B
D1A 13
16 D1B
D0A (LSB) 14
15 D0B (LSB)
Pin No.
1, 28
2
3
4, 25
5, 24, 27
6, 23
7–14
22–15
26
PIN FUNCTION DESCRIPTIONS
Mnemonic Function
AINA, AINB Analog Inputs for ADC A and B.
VREF
PWRDN
VD
GND
VDD
D7A–D0A
D7B–D0B
ENCODE
Internal Voltage Reference (2.5 V
Typical); Bypass with 0.1 µF to
Ground or Overdrive with External
Voltage Reference.
Power-Down Function Select; Logic
HIGH for Power-Down Mode
(Digital Outputs Go to High-
Impedance State).
Analog 5 V Power Supply.
Ground.
Digital Output Power Supply.
Nominally 3 V to 5 V.
Digital Outputs of ADC A.
Digital Outputs of ADC B.
Encode Clock for ADCs A and B
(ADCs Sample Simultaneously on
the Rising Edge of ENCODE).
Table I. Digital Coding (VREF = 2.5 V)
Analog Input (V) Voltage Level
Digital Output
3.0
2.502
2.498
2.0
Positive Full Scale
Midscale + 1/2 LSB
Midscale – 1/2 LSB
Negative Full Scale
1111 1111
1000 0000
0111 1111
0000 0000
–4– REV. A
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| Information | Total 13 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ AD9059.PDF Datasheet ] | |
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